يعرض 1 - 10 نتائج من 71 نتيجة بحث عن '"DENSITY PERTURBATIONS"', وقت الاستعلام: 0.72s تنقيح النتائج
  1. 1
    دورية أكاديمية

    المساهمون: Helsinki Institute of Physics, Department of Physics

    وصف الملف: application/pdf

    العلاقة: Figueroa , D G , Raatikainen , S , Räsänen , S & Tomberg , E 2022 , ' Implications of stochastic effects for primordial black hole production in ultra-slow-roll inflation ' , Journal of Cosmology and Astroparticle Physics , no. 5 , 027 . https://doi.org/10.1088/1475-7516/2022/05/027Test; ORCID: /0000-0003-2296-302X/work/115267557; ORCID: /0000-0003-1843-3878/work/115270473; 988361ba-54f4-4741-952a-2e9842e0f8bf; http://hdl.handle.net/10138/357807Test; 000804493000010

  2. 2
    دورية أكاديمية

    المساهمون: Particle Physics and Astrophysics, Helsinki Institute of Physics, Department of Physics

    وصف الملف: application/pdf

    العلاقة: We thank Nuutti Auvinen for participation in testing our code, David Alonso for advice on the jackknife analysis, and Vincent Vennin for discussions. D. G. F. (ORCID 0000-0002-4005-8915) is supported by a Ramon y Cajal contract with Ref. RYC-2017-23493, and by the grant "SOM: Sabor y Origen de la Materia" under Grant No. FPA2017-85985-P, both from Ministerio de Ciencia e Innovacion. D. G. F. also acknowledges hospitality and support from KITP in Santa Barbara, where part of this work was completed, supported by the National Science Foundation Grant No. NSF PHY-1748958. This work was supported by the Estonian Research Council Grants No. PRG803, No. MOBTT5, and No. PRG1055 and by the EU through the European Regional Development Fund CoE program TK133 "The Dark Side of the Universe". This work used computational resources provided by the Finnish Grid and Cloud Infrastructure (urn:nbn:fi:researchinfras-2016072533). The authors wish to acknowledge CSC-IT Center for Science, Finland, for computational resources.; Figueroa , D G , Raatikainen , S , Räsänen , S & Tomberg , E 2021 , ' Non-Gaussian Tail of the Curvature Perturbation in Stochastic Ultraslow-Roll Inflation : Implications for Primordial Black Hole Production ' , Physical Review Letters , vol. 127 , no. 10 , 101302 . https://doi.org/10.1103/PhysRevLett.127.101302Test; ORCID: /0000-0003-2296-302X/work/100083199; ORCID: /0000-0003-1843-3878/work/100084501; 85114384844; c1b7f3c2-a9ca-479e-8419-87d06e7f303d; http://hdl.handle.net/10138/338333Test; 000692791400004

  3. 3
    كتاب إلكتروني

    المؤلفون: Baldauf, Tobias, author

    المصدر: Effective Field Theory in Particle Physics and Cosmology : Lecture Notes of the Les Houches Summer School: Volume 108, July 2017, 2020, ill.

  4. 4
    دورية أكاديمية

    المساهمون: Department of Physics, Helsinki Institute of Physics

    وصف الملف: application/pdf

    العلاقة: We are grateful to Jan Hamann and Jim Zibin for extensive help with the final editing of this manuscript. The Planck Collaboration acknowledges the support of: ESA; CNES and CNRS/INSU-IN2P3-INP (France); ASI, CNR, and INAF (Italy); NASA and DoE (USA); STFC and UKSA (UK); CSIC, MINECO, JA, and RES (Spain); Tekes, AoF, and CSC (Finland); DLR and MPG (Germany); CSA (Canada); DTU Space (Denmark); SER/SSO (Switzerland); RCN (Norway); SFI (Ireland); FCT/MCTES (Portugal); ERC and PRACE (EU). A description of the Planck Collaboration and a list of its members, indicating which technical or scientific activities they have been involved in, can be found at http://www.cosmos.esa.int/web/planck/planck-collaborationTest.; Planck Collaboration , Akrami , Y , Keihanen , E , Kiiveri , K , Kurki-Suonio , H , Lindholm , V , Savelainen , M , Suur-Uski , A -S & Valiviita , J 2020 , ' Planck 2018 results : X. Constraints on inflation ' , Astronomy & Astrophysics , vol. 641 , 10 . https://doi.org/10.1051/0004-6361/201833887Test; ORCID: /0000-0002-4618-3063/work/82128288; ORCID: /0000-0001-5029-2863/work/82129131; ORCID: /0000-0003-2317-5471/work/82129345; ORCID: /0000-0002-3711-3346/work/82129514; ORCID: /0000-0001-6225-3693/work/82131000; ORCID: /0000-0003-1804-7715/work/82132967; 5f82343a-2323-455b-a1e8-7a0ba22b01cc; http://hdl.handle.net/10138/320382Test; 000571763700010

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    دورية أكاديمية

    المساهمون: Department of Physics, Space Physics Research Group

    وصف الملف: application/pdf

    العلاقة: This work has been supported in part by an ESA contract (grant no. 4000127346/19/NL/IA) and DUTH (project no. KE82324). The work of Minna Palmroth is supported by the European Research Council Consolidator (grant no. 682068-PRESTISSIMO) and the Academy of Finland (grant nos. 312351 and 309937). The research was also funded by the National Environment Research Council Highlight Topic (grant no. NE/P10738X, Rad-Sat) and the National Environment Research Council (grant no. NE/R016455/1).; Sarris , T E , Talaat , E R , Palmroth , M , Dandouras , I , Armandillo , E , Kervalishvili , G , Buchert , S , Tourgaidis , S , Malaspina , D M , Jaynes , A N , Paschalidis , N , Sample , J , Halekas , J , Doornbos , E , Lappas , V , Jorgensen , T M , Stolle , C , Clilverd , M , Wu , Q , Sandberg , I , Pirnaris , P & Aikio , A 2020 , ' Daedalus : a low-flying spacecraft for in situ exploration of the lower thermosphere-ionosphere ' , Geoscientific Instrumentation, Methods and Data Systems , vol. 9 , no. 1 , pp. 153-191 . https://doi.org/10.5194/gi-9-153-2020Test; ORCID: /0000-0003-4857-1227/work/75563367; 6f5455ec-70c5-4a27-b3b5-e00719f92f33; http://hdl.handle.net/10138/315023Test; 000529339000001

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    دورية أكاديمية

    المؤلفون: Akrami, Y, Arroja, F, Ashdown, M, Aumont, J, Baccigalupi, C, Ballardini, M, Banday, AJ, Barreiro, RB, Bartolo, N, Basak, S, Benabed, K, Bernard, J-P, Bersanelli, M, Bielewicz, P, Bock, JJ, Bond, JR, Borrill, J, Bouchet, FR, Boulanger, F, Bucher, M, Burigana, C, Butler, RC, Calabrese, E, Cardoso, J-F, Carron, J, Challinor, A, Chiang, HC, Colombo, LPL, Combet, C, Contreras, D, Crill, BP, Cuttaia, F, de Bernardis, P, de Zotti, G, Delabrouille, J, Delouis, J-M, Di Valentino, E, Diego, JM, Donzelli, S, Dore, O, Douspis, M, Ducout, A, Dupac, X, Dusini, S, Efstathiou, G, Elsner, F, Ensslin, TA, Eriksen, HK, Fantaye, Y, Fergusson, J, Fernandez-Cobos, R, Finelli, F, Forastieri, F, Frailis, M, Franceschi, E, Frolov, A, Galeotta, S, Galli, S, Ganga, K, Gauthier, C, Genova-Santos, RT, Gerbino, M, Ghosh, T, Gonzalez-Nuevo, J, Gorski, M, Gratton, S, Gruppuso, A, Gudmundsson, JE, Hamann, J, Handley, W, Hansen, FK, Herranz, D, Hivon, E, Hooper, DC, Huang, Z, Jaffe, AH, Jones, WC, Keihanen, E, Keskitalo, R, Kiiveri, K, Kim, J, Kisner, TS, Krachmalnicoff, N, Kunz, M, Kurki-Suonio, H, Lagache, G, Lamarre, J-M, Lasenby, A, Lattanzi, M, Lawrence, CR, Le Jeune, M, Lesgourgues, J, Levrier, F, Lewis, A, Liguori, M, Lilje, PB, Lindholm, V, Lopez-Caniego, M, Lubin, PM, Ma, Y-Z, Macias-Perez, JF, Maggio, G, Maino, D, Mandolesi, N, Mangilli, A, Marcos-Caballero, A, Maris, M, Martin, PG, Martinez-Gonzalez, E, Matarrese, S, Mauri, N, McEwen, JD, Meerburg, PD, Meinhold, PR, Melchiorri, A, Mennella, A, Migliaccio, M, Mitra, S, Miville-Deschenes, M-A, Molinari, D, Moneti, A, Montier, L, Morgante, G, Moss, A, Munchmeyer, M, Natoli, P, Norgaard-Nielsen, HU, Pagano, L, Paoletti, D, Partridge, B, Patanchon, G, Peiris, HV, Perrotta, F, Pettorino, V, Piacentini, F, Polastri, L, Polenta, G, Puget, J-L, Rachen, JP, Reinecke, M, Remazeilles, M, Renzi, A, Rocha, G, Rosset, C, Roudier, G, Rubino-Martin, JA, Ruiz-Granados, B, Salvati, L, Sandri, M, Savelainen, M, Scott, D, Shellard, EPS, Shiraishi, M, Sirignano, C, Sirri, G, Spencer, LD, Sunyaev, R, Suur-Uski, A-S, Tauber, JA, Tavagnacco, D, Tenti, M, Toffolatti, L, Tomasi, M, Trombetti, T, Valiviita, J, Van Tent, B, Vielva, P, Villa, F, Vittorio, N, Wandelt, BD, Wehus, IK, White, SDM, Zacchei, A, Zibin, JP, Zonca, A

    المصدر: Astronomy & Astrophysics , 641 , Article A10. (2020)

    وصف الملف: text

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    دورية أكاديمية

    المساهمون: Helsinki Institute of Physics, Department of Physics

    وصف الملف: application/pdf

    العلاقة: TT would like to thank Cosmology group at University of Jyvaskyla for the hospitality during the visit, where a part of this work was done. This work was partially supported by the Jenny and Antti Wihuri foundation (JL), the Academy of Finland project 278722 (KK), JSPS KAKENHI Grant Number 15K05084 (TT), and MEXT KAKENHI Grant Number 15H05888 (TT).; Kainulainen , K , Leskinen , J , Nurmi , S & Takahashi , T 2017 , ' CMB spectral distortions in generic two-field models ' , Journal of Cosmology and Astroparticle Physics , vol. 2017 , no. 11 , 002 . https://doi.org/10.1088/1475-7516/2017/11/002Test; 85039415445; bde6d9d9-69d7-490d-8bf2-8c249fe3de96; http://hdl.handle.net/10138/307619Test; 000414557000002

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    دورية أكاديمية

    المساهمون: Department of Physics, Helsinki Institute of Physics

    وصف الملف: application/pdf

    العلاقة: The development of Planck has been supported by: ESA; CNES and CNRS/INSU-IN2P3-INP (France); ASI, CNR, and INAF (Italy); NASA and DoE (USA); STFC and UKSA (UK); CSIC, MICINN, JA and RES (Spain); Tekes, AoF and CSC (Finland); DLR and MPG (Germany); CSA (Canada); DTU Space (Denmark); SER/SSO (Switzerland); RCN (Norway); SFI (Ireland); FCT/MCTES (Portugal); and PRACE (EU). A description of the Planck Collaboration and a list of its members, including the technical or scientific activities in which they have been involved, can be found at http://www.sciops.esa.int/index.phpTest? project=planck&page=Planck_Collaboration. We gratefully acknowledge CINECA (http://www.cineca.itTest/) under the agreement LFI/CINECA and IN2P3 Computer Center (http://cc.in2p3.frTest) for providing a significant amount of the computing resources and services needed for this work.; Ade , P A R , Juvela , M , Keihänen , E , Kurki-Suonio , H , Poutanen , T , Savelainen , M , Suur-Uski , A-S , Tuovinen , J , Valiviita , J & Planck Collaboration 2014 , ' Planck 2013 results. XXII. Constraints on inflation ' , Astronomy & Astrophysics , vol. 571 , A22 . https://doi.org/10.1051/0004-6361/201321569Test; ORCID: /0000-0002-5809-4834/work/43222517; ORCID: /0000-0002-4618-3063/work/43223692; ORCID: /0000-0001-5029-2863/work/43227447; ORCID: /0000-0001-6225-3693/work/43229393; ORCID: /0000-0003-1804-7715/work/43224034; 84908700725; cc46396e-a9b5-423c-9431-03ee16682e46; http://hdl.handle.net/10138/233689Test; 000345282600105

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    دورية أكاديمية

    المساهمون: Helsinki Institute of Physics, Department of Physics

    وصف الملف: application/pdf

    العلاقة: Väliviita , J , Savelainen , M , Talvitie , M , Kurki-Suonio , H & Rusak , S 2012 , ' Constraints on Scalar and Tensor Perturbations in Phenomenological and Two-field Inflation Models : Bayesian Evidences for Primordial Isocurvature and Tensor Modes ' , Astrophysical Journal , vol. 753 , no. 2 , pp. 151 . https://doi.org/10.1088/0004-637X/753/2/151Test; ORCID: /0000-0002-4618-3063/work/43736437; 84862883535; 07abb2fa-557e-4ffa-a18c-a1929cc7c910; http://hdl.handle.net/10138/234282Test; 000305912700058

  10. 10
    دورية أكاديمية

    المساهمون: The authors are grateful to the organizes of the First ICRANet-Minsk workshop on high energy astrophysics in a frame of BelINP-2017 Symposium for the invitation to give this lecture.

    المصدر: Proceedings of the National Academy of Sciences of Belarus. Physics and Mathematics Series; № 4 (2017); 88-97 ; Известия Национальной академии наук Беларуси. Серия физико-математических наук; № 4 (2017); 88-97 ; 2524-2415 ; 1561-2430 ; undefined

    وصف الملف: application/pdf

    العلاقة: https://vestifm.belnauka.by/jour/article/view/285/276Test; Singh P., Lohiya D. Constraints on Lepton Asymmetry from Nucleosynthesis in a Linearly Coasting Cosmology. Journal of Cosmology and Astroparticle Physics, 2015, vol. 2015, no. 5, pp. 061. Doi:10.1088/1475-7516/2015/05/061; Dev A., Safonova M., Jain D., Lohiya D. Cosmological tests for a linear coasting cosmology. Physics Letters, vol. 548, no. 1-2, pp. 12–18. Doi:10.1016/S0370-2693(02)02814-9; Benoit-Lévy A., Chardin. G. The Dirac-Milne cosmology. International Journal of Modern Physics: Conference Series, 2014, vol. 30, p. 1460272. Doi:10.1142/S2010194514602725; Melia F. On recent claims concerning the Rh = ct Universe. Monthly Notices of the Royal Astronomical Society, 2015, vol. 446, no. 2, pp. 1191–1194. Doi:10.1093/mnras/stu2181; Shafer D. L. Robust model comparison disfavors power law cosmology. Physical Review D, 2015, vol. 91, no. 10. Doi:10.1103/physrevd.91.103516; Melia F. The Linear Growth of Structure in the Rh = ct Universe. Monthly Notices of the Royal Astronomical Society, 2017, vol. 464, no. 2, pp. 1966–1976. Doi:10.1093/mnras/stw2493; Bengochea G. R., Leon G. Puzzling initial conditions in the Rh = ct model. The European Physical Journal C, 2016, vol. 76, no. 11, p. 626. Doi:10.1140/epjc/s10052-016-4485-y; Tutusaus I., Lamine B., Blanchard A., Dupays A., Zolnierowski Y., Cohen-Tanugi J., Ealet A., Escoffier S., Le Fèvre O., Ilić S., Pisani A., Plaszczynski S., Sakr Z., Salvatelli V., Schücker T., Tilquin A., Virey J.-M. Power law cosmology model comparison with CMB scale information. Physical Review D, 2016, vol. 94, no. 10, p. 103511. Doi:10.1103/PhysRevD.94.103511; Milne E. A. Relativity, Gravitation and World-Structure. Oxford, The Clarendon Press, 1935. 385 p.; Cherkas, S. L., Kalashnikov, V. L. Universe driven by the vacuum of scalar field: VFD model. Baryshev, Yu. V., Taganov, I. N., Teerikorpi P. (eds.). Practical cosmology : proceedings of the International conference “Problems of practical cosmology”, held at Russian geographical society, 23–27 June 2008, vol. 2. Saint-Petersburg, Russ. geogr. soc., 2008, pp. 135–140.; Melia F. Cosmological perturbations without inflation. Classical and Quantum Gravity, 2016, vol. 34, no. 1, p. 015011. Doi:10.1088/1361-6382/34/1/015011; Birrell N. D., Davies P. C. W. Quantum Fields in Curved Space. Cambridge, Cambridge Univ. Press, 1982. 352 p. Doi:10.1017/CBO9780511622632; Cherkas S. L., Kalashnikov V. L. Quantum mechanics allows setting initial conditions at a cosmological singularity: Gowdy model example. Theoretical Physics, 2017, vol. 2, no. 3, pp. 124–135. Doi: 0.22606/tp.2017.23003; Faddeev L. D., Slavnov A. A. Gauge fields: an introduction to quantum theory. California, Addison-Wesley, 1980. 240 p.; Anischenko S. V., Cherkas S. L., Kalashnikov V. L. Cosmological production of fermions in a flat Friedman universe with linearly growing scale factor: exactly solvable model. Nonlinear Phenomena in Complex Systems, 2010, vol. 13, no. 3, pp. 315–319.; Cherkas S. L., Kalashnikov V. L., Determination of the UV cut-off from the observed value of the Universe acceleration. Journal of Cosmology and Astroparticle Physics, 2007, vol. 2007, no. 1, p. 028. Doi: 0.1088/1475-7516/2007/01/028; https://vestifm.belnauka.by/jour/article/view/285Test; undefined