المؤلفون: Hussenot-Desenonges, T, Wouters, T, Guessoum, N, Abdi, I, Abulwfa, A, Adami, C, Fernández, J.F. Agüí, Ahumada, T, Aivazyan, V, Akl, D, Anand, S, Andrade, C.M, Antier, S, Ata, S.A, d'Avanzo, P, Azzam, Y.A, Baransky, A, Basa, S, Blazek, M, Bendjoya, P, Beradze, S, Boumis, P, Bremer, M, Brivio, R, Buat, V, Bulla, M, Burkhonov, O, Burns, E, Cenko, S.B, Coughlin, M.W, Corradi, W, Daigne, F, Dietrich, T, Dornic, D, Ducoin, J.-G, Duverne, P.-A, Elhosseiny, E.G, Elnagahy, F.I, El-Sadek, M.A, Ferro, M, Le Floc'H, E, Freeberg, M, Fynbo, J.P.U, Götz, D, Gurbanov, E, Hamed, G.M, Hasanov, E, Healy, B.F, Heintz, K.E, Hello, P, Inasaridze, R, Iskandar, A, Ismailov, N, Izzo, L, Jhawar, S, Du Laz, T. Jegou, Kamel, T.M, Karpov, S, Klotz, A, Koulouridis, E, Kuin, N.P, Kochiashvili, N, Leonini, S, Lu, K.-X, Malesani, D.B, Masek, M, Mao, J, Melandri, A, Mihov, B.M, Natsvlishvili, R, Navarete, F, Nedora, V, Nicolas, J, Odeh, M, Palmerio, J, Pang, P.T.H, de Pasquale, M, Peng, H.W, Pormente, S, Peloton, J, Pradier, T, Pyshna, O, Rajabov, Y, Rakotondrainibe, N.A, Rivet, J.-P, Rousselot, L, Saccardi, A, Sasaki, N, Schneider, B, Serrau, M, Shokry, A, Slavcheva-Mihova, L, Simon, A, Sokoliuk, O, Srinivasaragavan, G, Strausbaugh, R, Takey, A, Tanvir, N.R, Thöne, C.C, Tillayev, Y, Melo, I. Tosta E, Turpin, D, de Ugarte Postigo, A, Vasylenko, V, Vergani, S.D, Vidadi, Z, Xu, D, Wang, L.T, Wang, X.F, Winters, J.M, Zhang, X.-L, Zhu, Z

المساهمون: Laboratoire de Physique des 2 Infinis Irène Joliot-Curie (IJCLab), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'Astrophysique de Marseille (LAM), Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS), Observatoire de la Côte d'Azur (OCA), Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Joseph Louis LAGRANGE (LAGRANGE), Université Nice Sophia Antipolis (1965 - 2019) (UNS)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de la Côte d'Azur, Université Côte d'Azur (UniCA)-Université Côte d'Azur (UniCA)-Centre National de la Recherche Scientifique (CNRS), Institut de RadioAstronomie Millimétrique (IRAM), Centre National de la Recherche Scientifique (CNRS), Institut d'Astrophysique de Paris (IAP), Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), AstroParticule et Cosmologie (APC (UMR_7164)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité), Astrophysique Interprétation Modélisation (AIM (UMR7158 / UMR_E_9005 / UM_112)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Institut de recherche en astrophysique et planétologie (IRAP), Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Centre National de la Recherche Scientifique (CNRS), Galaxies, Etoiles, Physique, Instrumentation (GEPI), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Institut Pluridisciplinaire Hubert Curien (IPHC), Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)

المصدر: Mon.Not.Roy.Astron.Soc. ; https://hal.science/hal-04268716Test ; Mon.Not.Roy.Astron.Soc., 2024, 530 (1), pp.1-19. ⟨10.1093/mnras/stae503⟩

مصطلحات موضوعية: methods: statistical, techniques: photometric, techniques: spectroscopic, gamma-ray burst: individual: GRB 230812B, gamma-ray bursts, transients: supernovae, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph]

الوصف: International audience ; GRB~230812B is a bright and relatively nearby ($z =0.36$) long gamma-ray burst that has generated significant interest in the community and therefore has been subsequently observed over the entire electromagnetic spectrum. We report over 80 observations in X-ray, ultraviolet, optical, infrared, and sub-millimeter bands from the GRANDMA (Global Rapid Advanced Network for Multi-messenger Addicts) network of observatories and from observational partners. Adding complementary data from the literature, we then derive essential physical parameters associated with the ejecta and external properties (i.e. the geometry and environment) and compare with other analyses of this event (e.g. Srinivasaragavan et al. 2023). We spectroscopically confirm the presence of an associated supernova, SN2023pel, and we derive a photospheric expansion velocity of v $\sim$ 17$\times10^3$ km $s^{-1}$. We analyze the photometric data first using empirical fits of the flux and then with full Bayesian Inference. We again strongly establish the presence of a supernova in the data, with an absolute peak r-band magnitude $M_r = - 19.41 \pm 0.10$. We find a flux-stretching factor or relative brightness $k_{\rm SN}=1.04 \pm 0.09$ and a time-stretching factor $s_{\rm SN}=0.68 \pm 0.05$, both compared to SN1998bw. Therefore, GRB 230812B appears to have a clear long GRB-supernova association, as expected in the standard collapsar model. However, as sometimes found in the afterglow modelling of such long GRBs, our best fit model favours a very low density environment ($\log_{10}({n_{\rm ISM}/{\rm cm}^{-3}}) = -2.16^{+1.21}_{-1.30}$). We also find small values for the jet's core angle $\theta_{\rm core}={1.70^{+1.00}_{-0.71}} \ \rm{deg}$ and viewing angle. GRB 230812B/SN2023pel is one of the best characterized afterglows with a distinctive supernova bump.

العلاقة: info:eu-repo/semantics/altIdentifier/arxiv/2310.14310; hal-04268716; https://hal.science/hal-04268716Test; https://hal.science/hal-04268716/documentTest; https://hal.science/hal-04268716/file/stae503.pdfTest; ARXIV: 2310.14310; INSPIRE: 2713459

الإتاحة: https://doi.org/10.1093/mnras/stae503Test
https://hal.science/hal-04268716Test
https://hal.science/hal-04268716/documentTest
https://hal.science/hal-04268716/file/stae503.pdfTest

المؤلفون: Tosta E Melo, I, Ducoin, J.-G, Vidadi, Z, Andrade, C, Rupchandani, V, Agayeva, S, Abdelhadi, J, Abe, L, Aguerre-Chariol, O, Aivazyan, V, Alishov, S, Antier, S, Bai, J.-M, Baransky, A, Bednarz, S, Bendjoya, Ph, Benkhaldoun, Z, Beradze, S, Bizouard, M.A, Bhardwaj, U, Blazek, M, Boër, M, Broens, E, Burkhonov, O, Christensen, N, Cooke, J, Corradi, W, Coughlin, M.W, Culino, T, Daigne, F, Dornic, D, Duverne, P.-A, Ehgamberdiev, S, Eymar, L, Fouad, A, Freeberg, M, Gendre, B, Guo, F, Gokuldass, P, Guessoum, N, Gurbanov, E, Hainich, R, Hasanov, E, Hello, P, Inasaridze, R, Iskandar, A, Ismailov, N, Janati, A, Du Laz, T. Jegou, Kann, D.A, Karpov, S, Kiendrebeogo, R.W, Klotz, A, Kneip, R, Kochiashvili, N, Kaeouach, A, Kruiswijk, K, Lamoureux, M, Leroy, N, Lin, W.L, Mao, J, Marchais, D, Mašek, M, Midavaine, T, Moller, A, Morris, D, Natsvlishvili, R, Navarete, F, Guelbenzu, A. Nicuesa, Noonan, K, Noysena, K, Oksanen, A, Orange, N.B, Pellouin, C, Peloton, J, Peng, H.W, Pilloix, M, Popowicz, A, Pradier, T, Pyshna, O, Raaijmakers, G, Rajabov, Y, Rau, A, Rinner, C, Rivet, J.-P, Ryh, A.S, Sabil, M, Sadibekova, T, Sasaki, N, Serrau, M, Simon, A, Shokry, Ahmed, Smith, K, Sokoliuk, O, Song, X, Takey, A, Thierry, P, Tillayev, Y, Turpin, D, de Ugarte Postigo, A, Vasylenko, V, Vernet, D, Wang, L, Vachier, F, Vignes, J.P, Wang, X.F, Zeng, X, Zhang, J, Zhu, Y

المساهمون: Institut d'Astrophysique de Paris (IAP), Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Joseph Louis LAGRANGE (LAGRANGE), Université Nice Sophia Antipolis (1965 - 2019) (UNS)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de la Côte d'Azur, Université Côte d'Azur (UniCA)-Université Côte d'Azur (UniCA)-Centre National de la Recherche Scientifique (CNRS), Institut de RadioAstronomie Millimétrique (IRAM), Centre National de la Recherche Scientifique (CNRS), Astrophysique Relativiste Théories Expériences Métrologie Instrumentation Signaux (ARTEMIS), Institut universitaire de France (IUF), Ministère de l'Education nationale, de l’Enseignement supérieur et de la Recherche (M.E.N.E.S.R.), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), AstroParticule et Cosmologie (APC (UMR_7164)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité), Laboratoire de Physique des 2 Infinis Irène Joliot-Curie (IJCLab), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Institut de recherche en astrophysique et planétologie (IRAP), Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Centre National de la Recherche Scientifique (CNRS), Institut Pluridisciplinaire Hubert Curien (IPHC), Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Astrophysique Interprétation Modélisation (AIM (UMR7158 / UMR_E_9005 / UM_112)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Observatoire de la Côte d'Azur (OCA), Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)

المصدر: Astron.Astrophys. ; https://hal.science/hal-04274105Test ; Astron.Astrophys., 2024, 682, pp.A141. ⟨10.1051/0004-6361/202347938⟩

مصطلحات موضوعية: [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det]

الوصف: International audience ; We present a campaign designed to train the GRANDMA network and its infrastructure to follow up on transient alerts and detect their early afterglows. In preparation for O4 II campaign, we focused on GRB alerts as they are expected to be an electromagnetic counterpart of gravitational-wave events. Our goal was to improve our response to the alerts and start prompt observations as soon as possible to better prepare the GRANDMA network for the fourth observational run of LIGO-Virgo-Kagra (which started at the end of May 2023), and future missions such as SM. To receive, manage and send out observational plans to our partner telescopes we set up dedicated infrastructure and a rota of follow-up adcates were organized to guarantee round-the-clock assistance to our telescope teams. To ensure a great number of observations, we focused on Swift GRBs whose localization errors were generally smaller than the GRANDMA telescopes' field of view. This allowed us to bypass the transient identification process and focus on the reaction time and efficiency of the network. During 'Ready for O4 II', 11 Swift/INTEGRAL GRB triggers were selected, nine fields had been observed, and three afterglows were detected (GRB 220403B, GRB 220427A, GRB 220514A), with 17 GRANDMA telescopes and 17 amateur astronomers from the citizen science project Kilonova-Catcher. Here we highlight the GRB 220427A analysis where our long-term follow-up of the host galaxy allowed us to obtain a photometric redshift of $z=0.82\pm0.09$, its lightcurve elution, fit the decay slope of the afterglows, and study the properties of the host galaxy.

العلاقة: info:eu-repo/semantics/altIdentifier/arxiv/2310.17287; hal-04274105; https://hal.science/hal-04274105Test; https://hal.science/hal-04274105/documentTest; https://hal.science/hal-04274105/file/aa47938-23.pdfTest; ARXIV: 2310.17287; INSPIRE: 2714757

الإتاحة: https://doi.org/10.1051/0004-6361/202347938Test
https://hal.science/hal-04274105Test
https://hal.science/hal-04274105/documentTest
https://hal.science/hal-04274105/file/aa47938-23.pdfTest

المؤلفون: Kann, D.A, Agayeva, S, Aivazyan, V, Alishov, S, Andrade, C.M, Antier, S, Baransky, A, Bendjoya, P, Benkhaldoun, Z, Beradze, S, Berezin, D, Boër, M, Broens, E, Brunier, S, Bulla, M, Burkhonov, O, Burns, E, Chen, Y, Chen, Y.P, Conti, M, Coughlin, M.W, Cui, W.W, Daigne, F, Delaveau, B, Devillepoix, H.A.R, Dietrich, T, Dornic, D, Dubois, F, Ducoin, J.-G, Durand, E, Duverne, P.-A, Eggenstein, H.-B, Ehgamberdiev, S, Fouad, A, Freeberg, M, Froebrich, D, Ge, M.Y, Gervasoni, S, Godunova, V, Gokuldass, P, Gurbanov, E, Han, D.W, Hasanov, E, Hello, P, Hussenot-Desenonges, T, Inasaridze, R, Iskandar, A, Ismailov, N, Janati, A, Jegou Du Laz, T, Jia, S.M, Karpov, S, Kaeouach, A, Kiendrebeogo, R.W, Klotz, A, Kneip, R, Kochiashvili, N, Kunert, N, Lekic, A, Leonini, S, Li, C.K, Li, W, Li, X.B, Liao, J.Y, Logie, L, Lu, F.J, Mao, J, Marchais, D, Ménard, R, Morris, D, Natsvlishvili, R, Nedora, V, Noonan, K, Noysena, K, Orange, N.B, Pang, P.T.H, Peng, H.W, Pellouin, C, Peloton, J, Pradier, T, Pyshna, O, Rajabov, Y, Rau, S, Rinner, C, Rivet, J.-P, Romanov, F.D, Rosi, P, Rupchandani, V.A, Serrau, M, Shokry, A, Simon, A, Smith, K, Sokoliuk, O, Soliman, M, Song, L.M, Takey, A, Tillayev, Y, Ramirez, L.M. Tinjaca, Melo, I. Tosta E, Turpin, D, de Ugarte Postigo, A, Vanaverbeke, S, Vasylenko, V, Vernet, D, Vidadi, Z, Wang, C, Wang, J, Wang, L.T, Wang, X.F, Xiong, S.L, Xu, Y.P, Xue, W.C, Zeng, X, Zhang, S.N, Zhao, H.S, Zhao, X.F

المساهمون: Astrophysique Relativiste Théories Expériences Métrologie Instrumentation Signaux (ARTEMIS), Université Nice Sophia Antipolis (1965 - 2019) (UNS)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de la Côte d'Azur, Université Côte d'Azur (UniCA)-Université Côte d'Azur (UniCA)-Centre National de la Recherche Scientifique (CNRS), Joseph Louis LAGRANGE (LAGRANGE), Institut d'Astrophysique de Paris (IAP), Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Institut Polytechnique des Sciences Avancées (IPSA), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), AstroParticule et Cosmologie (APC (UMR_7164)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité), Laboratoire de Physique des 2 Infinis Irène Joliot-Curie (IJCLab), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Institut de recherche en astrophysique et planétologie (IRAP), Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Centre National de la Recherche Scientifique (CNRS), Institut Pluridisciplinaire Hubert Curien (IPHC), Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Astrophysique Interprétation Modélisation (AIM (UMR7158 / UMR_E_9005 / UM_112)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Observatoire de la Côte d'Azur (OCA), Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), ANR-18-IDEX-0001,Université de Paris,Université de Paris(2018)

المصدر: ISSN: 2041-8205.

مصطلحات موضوعية: [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph]

الوصف: International audience ; Object GRB 221009A is the brightest gamma-ray burst (GRB) detected in more than 50 yr of study. In this paper, we present observations in the X-ray and optical domains obtained by the GRANDMA Collaboration and the Insight Collaboration. We study the optical afterglow with empirical fitting using the GRANDMA+HXMT-LE data sets augmented with data from the literature up to 60 days. We then model numerically using a Bayesian approach, and we find that the GRB afterglow, extinguished by a large dust column, is most likely behind a combination of a large Milky Way dust column and moderate low-metallicity dust in the host galaxy. Using the GRANDMA+HXMT-LE+XRT data set, we find that the simplest model, where the observed afterglow is produced by synchrotron radiation at the forward external shock during the deceleration of a top-hat relativistic jet by a uniform medium, fits the multiwavelength observations only moderately well, with a tension between the observed temporal and spectral evolution. This tension is confirmed when using the augmented data set. We find that the consideration of a jet structure (Gaussian or power law), the inclusion of synchrotron self-Compton emission, or the presence of an underlying supernova do not improve the predictions. Placed in the global context of GRB optical afterglows, we find that the afterglow of GRB 221009A is luminous but not extraordinarily so, highlighting that some aspects of this GRB do not deviate from the global known sample despite its extreme energetics and the peculiar afterglow evolution.

العلاقة: hal-04096261; https://hal.science/hal-04096261Test; https://hal.science/hal-04096261/documentTest; https://hal.science/hal-04096261/file/Kann_2023_ApJL_948_L12.pdfTest; INSPIRE: 2659068

الإتاحة: https://doi.org/10.3847/2041-8213/acc8d0Test
https://hal.science/hal-04096261Test
https://hal.science/hal-04096261/documentTest
https://hal.science/hal-04096261/file/Kann_2023_ApJL_948_L12.pdfTest

المؤلفون: Le Montagner, R, Peloton, J, Carry, B, Desmars, J., Hestroffer, D, Mendez, R, A, Perlbarg, A, C, Thuillot, W

المساهمون: Laboratoire de Physique des 2 Infinis Irène Joliot-Curie (IJCLab), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Observatoire de la Côte d'Azur (OCA), Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Institut Polytechnique des Sciences Avancées (IPSA), Institut de Mécanique Céleste et de Calcul des Ephémérides (IMCCE), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université de Lille-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)

المصدر: ISSN: 0004-6361.

مصطلحات موضوعية: surveys -methods: data analysis -minor planets, asteroids: general, [SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph]

الوصف: International audience ; Context. With the advent of large-scale astronomical surveys, such as the Zwicky Transient Facility (ZTF) and the forthcoming Vera C. Rubin Observatory’s Legacy Survey of Space and Time (LSST), the number of alerts generated by transient, variable, and moving astronomical objects is growing rapidly, reaching millions of alerts per night. Concerning the minor planets of the Solar System, their identification requires linking the alerts for many observations over a potentially lengthy period of time, leading to a very large combinatorial number.Aims. The goal is to demonstrate how a third-party module dedicated to the identification of new minor planets of the Solar System can be integrated with the Fink alert broker real-time operations, which deals with massive alert data streams produced by large-scale surveys.Methods. Our analysis takes advantage of the scientific surplus brought on by the Fink alert broker classification capabilities to first reduce the 111 275 131 processed alerts from ZTF between November 2019 and December 2022 (755 observation nights) to only 389 530 new Solar System alert candidates over the same period. We implemented a simple, yet pedagogical linking algorithm called Fink-FAT to create trajectory candidates in real time from alert data and extract orbital parameters. The analysis was validated on ZTF alert packets linked to confirmed Solar System objects from the Minor Planet Center (MPC) database. Finally, the candidates were confronted with follow-up observations.Results. Between November 2019 and December 2022, Fink-FAT extracted 327 new orbits from candidate Solar System objects at the time of the observations, of which 65 had still remained unreported in the MPC database as of March 2023. After two late follow-up observation campaigns of six orbit candidates, four were associated with known minor planets of the Solar System, and two still remain unknown. In terms of performance, Fink-FAT took under 3 h to link alerts into trajectory candidates and to ...

العلاقة: info:eu-repo/semantics/altIdentifier/arxiv/2305.01123; hal-04538209; https://hal.science/hal-04538209Test; https://hal.science/hal-04538209/documentTest; https://hal.science/hal-04538209/file/2023_LeMontagner.pdfTest; ARXIV: 2305.01123; INSPIRE: 2656047

الإتاحة: https://doi.org/10.1051/0004-6361/202346905Test
https://hal.science/hal-04538209Test
https://hal.science/hal-04538209/documentTest
https://hal.science/hal-04538209/file/2023_LeMontagner.pdfTest

المؤلفون: Aivazyan, V., Almualla, M., Antier, S., Baransky, A., Barynova, K., Basa, S., Bayard, F., Beradze, S., Berezin, D., Blazek, M., Boutigny, D., Boust, D., Broens, E., Burkhonov, O., Cailleau, A., Christensen, N., Cejudo, D., Coleiro, A., Coughlin, M.W., Datashvili, D., Dietrich, T., Dolon, F., Ducoin, J.-G., Duverne, P.-A., Marchal-Duval, G., Galdies, C., Granier, L., Godunova, V., Gokuldass, P., Eggenstein, H.B., Freeberg, M., Hello, P., Inasaridze, R., Ishida, E.O., Jaquiery, P., Kann, D.A., Kapanadze, G., Karpov, S., Kiendrebeogo, R.W., Klotz, A., Kneip, R., Kochiashvili, N., Kou, W., Kugel, F., Lachaud, C., Leonini, S., Leroy, A., Leroy, N., van Su, A. Le, Marchais, D., Masek, M., Midavaine, T., Moller, A., Morris, D., Natsvlishvili, R., Navarete, F., Noysena, K., Nissanke, S., Noonan, K., Orange, N.B., Peloton, J., Popowicz, A., Pradier, T., Prouza, M., Raaijmakers, G., Rajabov, Y., Richmond, M., Romanyuk, Ya., Rousselot, L., Sadibekova, T., Serrau, M., Sokoliuk, O., Song, X., Simon, A., Stachie, C., Taylor, A., Tillayev, Y., Turpin, D., Vardosanidze, M., Vlieghe, J., Melo, I. Tosta E., Wang, X.F., Zhu, J.

المساهمون: AstroParticule et Cosmologie (APC (UMR_7164)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité), Institut d'Astrophysique de Paris (IAP), Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique des 2 Infinis Irène Joliot-Curie (IJCLab), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Astrophysique Interprétation Modélisation (AIM (UMR_7158 / UMR_E_9005 / UM_112)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité), GRANDMA, ANR-18-IDEX-0001,Université de Paris,Université de Paris(2018)

المصدر: ISSN: 0035-8711.

مصطلحات موضوعية: gravitational waves, methods: data analysis, neutron star mergers, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det]

الوصف: International audience ; We present our follow-up observations with GRANDMA of transient sources revealed by the Zwicky Transient Facility (ZTF). Over a period of six months, all ZTF alerts were examined in real time by a dedicated science module implemented in the Fink broker, which will be used in filtering of transients discovered by the Vera C. Rubin Observatory. In this article, we present three selection methods to identify kilonova candidates. Out of more than 35 million alerts, a hundred sources have passed our selection criteria. Six were then followed-up by GRANDMA (by both professional and amateur astronomers). The majority were finally classified either as asteroids or as supernovae events. We mobilized 37 telescopes, bringing together a large sample of images, taken under various conditions and quality. To complement the orphan kilonova candidates, we included three additional supernovae alerts to conduct further observations during summer 2021. We demonstrate the importance of the amateur astronomer community that contributed images for scientific analyses of new sources discovered in a magnitude range r′ = 17 − 19 mag. We based our rapid kilonova classification on the decay rate of the optical source that should exceed 0.3 mag d^−1. GRANDMA’s follow-up determined the fading rate within 1.5 ± 1.2 d post-discovery, without waiting for further observations from ZTF. No confirmed kilonovae were discovered during our observing campaign. This work will be continued in the coming months in the view of preparing for kilonova searches in the next gravitational-wave observing run O4.

العلاقة: info:eu-repo/semantics/altIdentifier/arxiv/2202.09766; hal-03601232; https://hal.science/hal-03601232Test; https://hal.science/hal-03601232/documentTest; https://hal.science/hal-03601232/file/stac2054.pdfTest; ARXIV: 2202.09766; INSPIRE: 2035791

الإتاحة: https://doi.org/10.1093/mnras/stac2054Test
https://hal.science/hal-03601232Test
https://hal.science/hal-03601232/documentTest
https://hal.science/hal-03601232/file/stac2054.pdfTest

المؤلفون: Fraga, B.M.O, Bom, C.R, Santos, A, Russeil, E, Leoni, M, Peloton, J, Ishida, E.E.O, Möller, A, Blondin, S

المساهمون: Laboratoire de Physique de Clermont (LPC), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université Clermont Auvergne (UCA), Laboratoire de Physique des 2 Infinis Irène Joliot-Curie (IJCLab), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'Astrophysique de Marseille (LAM), Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)

المصدر: https://hal.science/hal-04558665Test ; 2024.

مصطلحات موضوعية: [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph]

الوصف: International audience ; The upcoming Legacy Survey of Space and Time (LSST) at the Vera Rubin Observatory is expected to detect a few million transients per night, which will generate a live alert stream during the entire 10 years of the survey. This will be distributed via community brokers whose task is to select subsets of the stream and direct them to scientific communities. Given the volume and complexity of data, machine learning (ML) algorithms will be paramount for this task. We present the infrastructure tests and classification methods developed within the {\sc Fink} broker in preparation for LSST. This work aims to provide detailed information regarding the underlying assumptions, and methods, behind each classifier, enabling users to make informed follow-up decisions from {\sc Fink} photometric classifications. Using simulated data from the Extended LSST Astronomical Time-series Classification Challenge (ELAsTiCC), we showcase the performance of binary and multi-class ML classifiers available in {\sc Fink}. These include tree-based classifiers coupled with tailored feature extraction strategies, as well as deep learning algorithms. We introduce the CBPF Alert Transient Search (CATS), a deep learning architecture specifically designed for this task. Results show that {\sc Fink} classifiers are able to handle the extra complexity which is expected from LSST data. CATS achieved $97\%$ accuracy on a multi-class classification while our best performing binary classifier achieve $99\%$ when classifying the Periodic class. ELAsTiCC was an important milestone in preparing {\sc Fink} infrastructure to deal with LSST-like data. Our results demonstrate that {\sc Fink} classifiers are well prepared for the arrival of the new stream; this experience also highlights that transitioning from current infrastructures to Rubin will require significant adaptation of currently available tools.

العلاقة: info:eu-repo/semantics/altIdentifier/arxiv/2404.08798; hal-04558665; https://hal.science/hal-04558665Test; ARXIV: 2404.08798; INSPIRE: 2777331

الإتاحة: https://hal.science/hal-04558665Test

المؤلفون: Biswas, B., Ishida, E.E.O., Peloton, J., Moller, A., Pruzhinskaya, M.V., de Souza, R.S., Muthukrishna, D.

المساهمون: AstroParticule et Cosmologie (APC (UMR_7164)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité), Laboratoire de Physique de Clermont (LPC), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université Clermont Auvergne (UCA), Laboratoire de Physique des 2 Infinis Irène Joliot-Curie (IJCLab), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)

المصدر: ISSN: 0004-6361.

مصطلحات موضوعية: [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph]

الوصف: International audience ; We describe the fast transient classification algorithm in the center of the kilonova (KN) science module currently implemented in the Fink broker and report classification results based on simulated catalogs and real data from the ZTF alert stream. We used noiseless, homogeneously sampled simulations to construct a basis of principal components (PCs). All light curves from a more realistic ZTF simulation were written as a linear combination of this basis. The corresponding coefficients were used as features in training a random forest classifier. The same method was applied to long (>30 days) and medium (<30 days) light curves. The latter aimed to simulate the data situation found within the ZTF alert stream. Classification based on long light curves achieved 73.87% precision and 82.19% recall. Medium baseline analysis resulted in 69.30% precision and 69.74% recall, thus confirming the robustness of precision results when limited to 30 days of observations. In both cases, dwarf flares and point Type Ia supernovae were the most frequent contaminants. The final trained model was integrated into the Fink broker and has been distributing fast transients, tagged as \texttt{KN\_candidates}, to the astronomical community, especially through the GRANDMA collaboration. We showed that features specifically designed to grasp different light curve behaviors provide enough information to separate fast (KN-like) from slow (non-KN-like) evolving events. This module represents one crucial link in an intricate chain of infrastructure elements for multi-messenger astronomy which is currently being put in place by the Fink broker team in preparation for the arrival of data from the Vera Rubin Observatory Legacy Survey of Space and Time.

العلاقة: info:eu-repo/semantics/altIdentifier/arxiv/2210.17433; hal-03852581; https://hal.science/hal-03852581Test; ARXIV: 2210.17433; INSPIRE: 2173646

الإتاحة: https://doi.org/10.1051/0004-6361/202245340Test
https://hal.science/hal-03852581Test

المؤلفون: Hasebe, T., Ade, P. A. R., Adler, A., Allys, E., Alonso, D., Arnold, K., Auguste, D., Aumont, J., Aurlien, R., Austermann, J., Azzoni, S., Baccigalupi, C., Banday, A. J., Banerji, R., Barreiro, R. B., Bartolo, N., Basak, S., Battistelli, E., Bautista, L., Beall, J., Beck, D., Beckman, S., Benabed, K., Bermejo-Ballesteros, J., Bersanelli, M., Bonis, J., Borrill, J., Bouchet, F., Boulanger, F., Bounissou, S., Brilenkov, M., Brown, M. L., Bucher, M., Calabrese, E., Calvo, M., Campeti, P., Carones, A., Casas, F. J., Catalano, A., Challinor, A., Chan, V., Cheung, K., Chinone, Y., Cliche, J., Columbro, F., Coulton, W., Cubas, J., Cukierman, A., Curtis, D., d'Alessandro, G., Dachlythra, K., de Bernardis, P., de Haan, T., de la Hoz, E., de Petris, M., Torre, S. Della, Dickinson, C., Diego-Palazuelos, P., Dobbs, M., Dotani, T., Douillet, D., Duband, L., Ducout, A., Duff, S., Duval, J. M., Ebisawa, K., Elleflot, T., Eriksen, H. K., Errard, J., Essinger-Hileman, T., Finelli, F., Flauger, R., Franceschet, C., Fuskeland, U., Galli, S., Galloway, M., Ganga, K., Gao, J. R., Genova-Santos, R. T., Gerbino, M., Gervasi, M., Ghigna, T., Giardiello, S., Gjerløw, E., Gradziel, M. L., Grain, J., Grandsire, L., Grupp, F., Gruppuso, A., Gudmundsson, J. E., Halverson, N. W., Hamilton, J., Hargrave, P., Hasegawa, M., Hattori, M., Hazumi, M., Henrot-Versillé, S., Hergt, L. T., Herman, D., Herranz, D., Hill, C. A., Hilton, G., Hivon, E., Hlozek, R. A., Hoang, T. D., Hornsby, A. L., Hoshino, Y., Hubmayr, J., Ichiki, K., Iida, T., Imada, H., Ishimura, K., Ishino, H., Jaehnig, G., Jones, M., Kaga, T., Kashima, S., Katayama, N., Kato, A., Kawasaki, T., Keskitalo, R., Kisner, T., Kobayashi, Y., Kogiso, N., Kogut, A., Kohri, K., Komatsu, E., Komatsu, K., Konishi, K., Krachmalnicoff, N., Kreykenbohm, I., Kuo, C. L., Kushino, A., Lamagna, L., Lanen, J. V., Laquaniello, G., Lattanzi, M., Lee, A. T., Leloup, C., Levrier, F., Linder, E., Louis, T., Luzzi, G., Macias-Perez, J., Maciaszek, T., Maffei, B., Maino, D., Maki, M., Mandelli, S., Maris, M., Martínez-González, E., Masi, S., Massa, M., Matarrese, S., Matsuda, F. T., Matsumura, T., Mele, L., Mennella, A., Migliaccio, M., Minami, Y., Mitsuda, K., Moggi, A., Monfardini, A., Montgomery, J., Montier, L., Morgante, G., Mot, B., Murata, Y., Murphy, J. A., Nagai, M., Nagano, Y., Nagasaki, T., Nagata, R., Nakamura, S., Nakano, R., Namikawa, T., Nati, F., Natoli, P., Nerval, S., Nishibori, T., Nishino, H., Noviello, F., O'Sullivan, C., Odagiri, K., Ogawa, H., Oguri, S., Ohsaki, H., Ohta, I. S., Okada, N., Pagano, L., Paiella, A., Paoletti, D., Passerini, A., Patanchon, G., Pelgrim, V., Peloton, J., Piacentini, F., Piat, M., Pisano, G., Polenta, G., Poletti, D., Prouvé, T., Puglisi, G., Rambaud, D., Raum, C., Realini, S., Reinecke, M., Remazeilles, M., Ritacco, A., Roudil, G., Rubino-Martin, J., Russell, M., Sakurai, H., Sakurai, Y., Sandri, M., Sasaki, M., Savini, G., Scott, D., Seibert, J., Sekimoto, Y., Sherwin, B., Shinozaki, K., Shiraishi, M., Shirron, P., Signorelli, G., Smecher, G., Spinella, F., Stever, S., Stompor, R., Sugiyama, S., Sullivan, R., Suzuki, A., Suzuki, J., Svalheim, T. L., Switzer, E., Takaku, R., Takakura, H., Takakura, S., Takase, Y., Takeda, Y., Tartari, A., Tavagnacco, D., Taylor, A., Taylor, E., Terao, Y., Thermeau, J., Thommesen, H., Thompson, K. L., Thorne, B., Toda, T., Tomasi, M., Tominaga, M., Trappe, N., Tristram, M., Tsuji, M., Tsujimoto, M., Tucker, C., Ullom, J., Vacher, L., Vermeulen, G., Vielva, P., Villa, F., Vissers, M., Vittorio, N., Wandelt, B., Wang, W., Watanuki, K., Wehus, I. K., Weller, J., Westbrook, B., Wilms, J., Winter, B., Wollack, E. J., Yamasaki, N. Y., Yoshida, T., Yumoto, J., Zacchei, A., Zannoni, M., Zonca, A.

المساهمون: Astrophysique, Laboratoire de physique de l'ENS - ENS Paris (LPENS), Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité)-Département de Physique de l'ENS-PSL, École normale supérieure - Paris (ENS-PSL), Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-École normale supérieure - Paris (ENS-PSL), Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité)-Département de Physique de l'ENS-PSL, Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL), Laboratoire de Physique des 2 Infinis Irène Joliot-Curie (IJCLab), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Institut de recherche en astrophysique et planétologie (IRAP), Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Centre National de la Recherche Scientifique (CNRS), Institut d'Astrophysique de Paris (IAP), Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), AstroParticule et Cosmologie (APC (UMR_7164)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité), Cryogénie (NEEL - Cryo), Institut Néel (NEEL), Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), Université Grenoble Alpes (UGA)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), Université Grenoble Alpes (UGA), Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), Institut de Recherche Interdisciplinaire de Grenoble (IRIG), Direction de Recherche Fondamentale (CEA) (DRF (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Centre National d’Études Spatiales Paris (CNES), Hélium : du fondamental aux applications (NEEL - HELFA), Institut d'astrophysique spatiale (IAS), Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Centre National d’Études Spatiales Paris (CNES)

المصدر: ISSN: 0022-2291.

مصطلحات موضوعية: Cosmology, Astronomy, CMB, Satellite, Sensitivity, Detector noise, [SDU]Sciences of the Universe [physics]

الوصف: International audience ; LiteBIRD is a future satellite mission designed to observe the polarization of the cosmic microwave background radiation in order to probe the inflationary universe. LiteBIRD is set to observe the sky using three telescopes with transition-edge sensor bolometers. In this work we estimated the LiteBIRD instrumental sensitivity using its current design. We estimated the detector noise due to the optical loadings using physical optics and ray-tracing simulations. The noise terms associated with thermal carrier and readout noise were modeled in the detector noise calculation. We calculated the observational sensitivities over fifteen bands designed for the LiteBIRD telescopes using assumed observation time efficiency.

العلاقة: hal-03974050; https://hal.science/hal-03974050Test; BIBCODE: 2022JLTP.tmp.284H; INSPIRE: 2629687

الإتاحة: https://doi.org/10.1007/s10909-022-02921-7Test
https://hal.science/hal-03974050Test

المؤلفون: Karpov, S, Peloton, J

المساهمون: Laboratoire de Physique des 2 Infinis Irène Joliot-Curie (IJCLab), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)

المصدر: Contributions of the Astronomical Observatory Skalnaté Plesoastr ; https://hal.science/hal-04444518Test ; Contributions of the Astronomical Observatory Skalnaté Plesoastr, 2023, 53 (4), pp.69-80. ⟨10.31577/caosp.2023.53.4.69⟩

مصطلحات موضوعية: [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph]

الوصف: International audience ; We assess the impact of satellite glints - rapid flashes produced by reflections of a sunlight from flat surfaces of rotating satellites - on current and future deep sky surveys such as the ones conducted by the Zwicky Transient Facility (ZTF) and the Vera C. Rubin Observatory upcoming Legacy Survey of Space and Time (LSST). In addition to producing a large number of streaks polluting the images, artificial satellites and space debris also generate great amount of false point-source alerts hindering the search for new rapid astro-physical transients. To investigate the extent of this problem, we perform an analysis of isolated single frame events detected by ZTF in more than three years of its operation, and, using three different methods, assess the fraction of them related to artificial satellites to be at least 20%. The satellites causing them occupy all kinds of orbits around the Earth, and the duration of flashes produced by their rotation is from a fraction of a second down to milliseconds, with mean all-sky rate of up to 80,000 per hour.

العلاقة: info:eu-repo/semantics/altIdentifier/arxiv/2310.17322; hal-04444518; https://hal.science/hal-04444518Test; ARXIV: 2310.17322; INSPIRE: 2756226

الإتاحة: https://doi.org/10.31577/caosp.2023.53.4.69Test
https://hal.science/hal-04444518Test

المؤلفون: Le Montagner, R, Peloton, J, Carry, B, Desmars, J, Hestroffer, D, Mendez, R.A, Perlbarg, A.C, Thuillot, W

المساهمون: Laboratoire de Physique des 2 Infinis Irène Joliot-Curie (IJCLab), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Joseph Louis LAGRANGE (LAGRANGE), Université Nice Sophia Antipolis (1965 - 2019) (UNS)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de la Côte d'Azur, Université Côte d'Azur (UniCA)-Université Côte d'Azur (UniCA)-Centre National de la Recherche Scientifique (CNRS), Institut Polytechnique des Sciences Avancées (IPSA), Institut de Mécanique Céleste et de Calcul des Ephémérides (IMCCE), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Lille-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Théorique et Hautes Energies (LPTHE), Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)

المصدر: ISSN: 0004-6361.

مصطلحات موضوعية: [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det]

الوصف: International audience ; With the advent of large-scale astronomical surveys such as the Zwicky Transient Facility (ZTF), the number of alerts generated by transient, variable and moving astronomical objects is growing rapidly, reaching millions per night. Concerning solar system minor planets, their identification requires linking the alerts of many observations over a potentially large time, leading to a very large combinatorial number. This work aims to identify new candidates for solar system objects from massive alert data streams produced by large-scale surveys, such as the ZTF and the Vera C. Rubin Observatory's Legacy Survey of Space and Time. Our analysis used the Fink alert broker capabilities to reduce the 111,275,131 processed alerts from ZTF between November 2019 and December 2022 to only 389,530 new solar system alert candidates over the same period. We then implemented a linking algorithm, Fink-FAT, to create real-time trajectory candidates from alert data and extract orbital parameters. The analysis was validated on ZTF alert packets linked to confirmed solar system objects from the Minor Planet Center database. Finally, the results were confronted against follow-up observations. Between November 2019 and December 2022, Fink-FAT extracted 327 new orbits from solar system object candidates at the time of the observations, over which 65 were still unreported in the MPC database as of March 2023. After two late follow-up observation campaigns of six orbit candidates, four were associated with known solar system minor planets, and two remain unknown. Fink-FAT is deployed in the Fink broker and successfully analyzes in real time the alert data from the ZTF survey by regularly extracting new candidates for solar system objects. Our scalability tests also show that Fink-FAT can handle the even larger volume of alert data that the Rubin Observatory will send.

العلاقة: info:eu-repo/semantics/altIdentifier/arxiv/2305.01123; hal-04088620; https://hal.science/hal-04088620Test; ARXIV: 2305.01123; INSPIRE: 2656047

الإتاحة: https://doi.org/10.1051/0004-6361/202346905Test
https://hal.science/hal-04088620Test