المؤلفون: Adaeze L. Ibik, Maria R. Drout, B. M. Gaensler, Paul Scholz, Daniele Michilli, Mohit Bhardwaj, Victoria M. Kaspi, Ziggy Pleunis, Tomas Cassanelli, Amanda M. Cook, Fengqiu A. Dong, Jane F. Kaczmarek, Calvin Leung, Katherine J. Lu, Kiyoshi W. Masui, Aaron B. Pearlman, Masoud Rafiei-Ravandi, Ketan R Sand, Kaitlyn Shin, Kendrick M. Smith, Ingrid H. Stairs

المصدر: The Astrophysical Journal, Vol 961, Iss 1, p 99 (2024)

مصطلحات موضوعية: Radio transient sources, Radio bursts, Astrophysics, QB460-466

الوصف: We present a search for host galaxy associations for the third set of repeating fast radio burst (FRB) sources discovered by the CHIME/FRB Collaboration. Using the ∼1′ CHIME/FRB baseband localizations and probabilistic methods, we identify potential host galaxies of two FRBs, 20200223B and 20190110C at redshifts of 0.06024(2) and 0.12244(6), respectively. We also discuss the properties of a third marginal candidate host galaxy association for FRB 20191106C with a host redshift of 0.10775(1). The three putative host galaxies are all relatively massive, fall on the standard mass–metallicity relationship for nearby galaxies, and show evidence of ongoing star formation. They also all show signatures of being in a transitional regime, falling in the green valley , which is between the bulk of star-forming and quiescent galaxies. The plausible host galaxies identified by our analysis are consistent with the overall population of repeating and nonrepeating FRB hosts while increasing the fraction of massive and bright galaxies. Coupled with these previous host associations, we identify a possible excess of FRB repeaters whose host galaxies have M _u − M _r colors redder than the bulk of star-forming galaxies. Additional precise localizations are required to confirm this trend.

وصف الملف: electronic resource

العلاقة: https://doaj.org/toc/1538-4357Test

الوصول الحر: https://doaj.org/article/d773ac8eda514ddbb97b8ebd552e62dfTest

المؤلفون: Alice P. Curtin, Shriharsh P. Tendulkar, Alexander Josephy, Pragya Chawla, Bridget Andersen, Victoria M. Kaspi, Mohit Bhardwaj, Tomas Cassanelli, Amanda Cook, Fengqiu Adam Dong, Emmanuel Fonseca, B. M. Gaensler, Jane F. Kaczmarek, Adam E. Lanmnan, Calvin Leung, Aaron B. Pearlman, Emily Petroff, Ziggy Pleunis, Masoud Rafiei-Ravandi, Scott M. Ransom, Kaitlyn Shin, Paul Scholz, Kendrick Smith, Ingrid Stairs

المصدر: The Astrophysical Journal, Vol 954, Iss 2, p 154 (2023)

مصطلحات موضوعية: Radio astronomy, Gamma-ray bursts, Gamma-ray bursters, Radio transient sources, Radio bursts, Astrophysics, QB460-466

الوصف: Fast radio bursts (FRBs) are a class of highly energetic, mostly extragalactic radio transients lasting for ∼milliseconds. While over 600 FRBs have been published so far, their origins are presently unclear, with some theories for extragalactic FRBs predicting accompanying high-energy emission. In this work, we use the Canadian Hydrogen Intensity Mapping Experiment (CHIME) Fast Radio Burst (CHIME/FRB) Project to explore whether any FRB-like radio emission coincides in space and time with 81 gamma-ray bursts (GRBs) detected between 2018 July 17 and 2019 July 8 by Swift/BAT and Fermi/GBM. We do not find any statistically significant coincident pairs within 3 σ of each other’s spatial localization regions and within a time difference of up to one week. In addition to searching for spatial matches between known FRBs and known GRBs, we use CHIME/FRB to constrain FRB-like (∼1–10 ms) radio emission before, at the time of, or after the reported high-energy emission at the position of 39 GRBs. For short gamma-ray bursts (SGRBs), we constrain the radio flux in the 400–800 MHz band to be under a few kJy for ∼5.5–12.5 hr post-high-energy burst. We use these limits to constrain models that predict FRB-like prompt radio emission after SGRBs. For long gamma-ray bursts, we constrain the radio flux to be under a few kJy from ∼6 hr pre-high-energy burst to ∼12 hr post-high-energy burst.

وصف الملف: electronic resource

العلاقة: https://doaj.org/toc/1538-4357Test

الوصول الحر: https://doaj.org/article/3e53a04f702743f593d56d33f8f4e6c5Test

المؤلفون: The CHIME/FRB Collaboration, Bridget C. Andersen, Kevin Bandura, Mohit Bhardwaj, P. J. Boyle, Charanjot Brar, Tomas Cassanelli, S. Chatterjee, Pragya Chawla, Amanda M. Cook, Alice P. Curtin, Matt Dobbs, Fengqiu Adam Dong, Jakob T. Faber, Mateus Fandino, Emmanuel Fonseca, B. M. Gaensler, Utkarsh Giri, Antonio Herrera-Martin, Alex S. Hill, Adaeze Ibik, Alexander Josephy, Jane F. Kaczmarek, Zarif Kader, Victoria Kaspi, T. L. Landecker, Adam E. Lanman, Mattias Lazda, Calvin Leung, Hsiu-Hsien Lin, Kiyoshi W. Masui, Ryan Mckinven, Juan Mena-Parra, Bradley W. Meyers, D. Michilli, Cherry Ng, Ayush Pandhi, Aaron B. Pearlman, Ue-Li Pen, Emily Petroff, Ziggy Pleunis, Masoud Rafiei-Ravandi, Mubdi Rahman, Scott M. Ransom, Andre Renard, Ketan R. Sand, Pranav Sanghavi, Paul Scholz, Vishwangi Shah, Kaitlyn Shin, Seth Siegel, Kendrick Smith, Ingrid Stairs, Jianing Su, Shriharsh P. Tendulkar, Keith Vanderlinde, Haochen Wang, Dallas Wulf, Andrew Zwaniga

المصدر: The Astrophysical Journal, Vol 947, Iss 2, p 83 (2023)

مصطلحات موضوعية: Radio transient sources, High energy astrophysics, Astrophysics, QB460-466

الوصف: We present the discovery of 25 new repeating fast radio burst (FRB) sources found among CHIME/FRB events detected between 2019 September 30 and 2021 May 1. The sources were found using a new clustering algorithm that looks for multiple events colocated on the sky having similar dispersion measures (DMs). The new repeaters have DMs ranging from ∼220 to ∼1700 pc cm ^−3 , and include sources having exhibited as few as two bursts to as many as twelve. We report a statistically significant difference in both the DM and extragalactic DM (eDM) distributions between repeating and apparently nonrepeating sources, with repeaters having a lower mean DM and eDM, and we discuss the implications. We find no clear bimodality between the repetition rates of repeaters and upper limits on repetition from apparently nonrepeating sources after correcting for sensitivity and exposure effects, although some active repeating sources stand out as anomalous. We measure the repeater fraction over time and find that it tends to an equilibrium of ${2.6}_{-2.6}^{+2.9}$ % over our total time-on-sky thus far. We also report on 14 more sources, which are promising repeating FRB candidates and which merit follow-up observations for confirmation.

وصف الملف: electronic resource

العلاقة: https://doaj.org/toc/1538-4357Test

الوصول الحر: https://doaj.org/article/370bd78026914e6cb837b90b0d9e1da7Test

المؤلفون: Bridget C. Andersen, Emmanuel Fonseca, J. W. McKee, B. W. Meyers, Jing Luo, C. M. Tan, I. H. Stairs, Victoria M. Kaspi, M. H. van Kerkwijk, Mohit Bhardwaj, P. J. Boyle, Kathryn Crowter, Paul B. Demorest, Fengqiu A. Dong, Deborah C. Good, Jane F. Kaczmarek, Calvin Leung, Kiyoshi W. Masui, Arun Naidu, Cherry Ng, Chitrang Patel, Aaron B. Pearlman, Ziggy Pleunis, Masoud Rafiei-Ravandi, Mubdi Rahman, Scott M. Ransom, Kendrick M. Smith, Shriharsh P. Tendulkar

المصدر: The Astrophysical Journal, Vol 943, Iss 1, p 57 (2023)

مصطلحات موضوعية: Radio pulsars, Binary pulsars, Compact binary stars, Pulsars, Neutron stars, Be stars, Astrophysics, QB460-466

الوصف: Of the more than 3000 radio pulsars currently known, only ∼300 are in binary systems, and only five of these consist of young pulsars with massive nondegenerate companions. We present the discovery and initial timing, accomplished using the Canadian Hydrogen Intensity Mapping Experiment (CHIME) telescope, of the sixth such binary pulsar, PSR J2108+4516, a 0.577 s radio pulsar in a 269 day orbit of eccentricity 0.09 with a companion of minimum mass 11 M _⊙ . Notably, the pulsar undergoes periods of substantial eclipse, disappearing from the CHIME 400–800 MHz observing band for a large fraction of its orbit, and displays significant dispersion measure and scattering variations throughout its orbit, pointing to the possibility of a circumstellar disk or very dense stellar wind associated with the companion star. Subarcsecond resolution imaging with the Karl G. Jansky Very Large Array unambiguously demonstrates that the companion is a bright, V ≃ 11 OBe star, EM* UHA 138, located at a distance of 3.26(14) kpc. Archival optical observations of EM* UHA 138 approximately suggest a companion mass ranging from 17.5 M _⊙ < M _c < 23 M _⊙ , in turn constraining the orbital inclination angle to 50.°3 ≲ i ≲ 58.°3. With further multiwavelength follow-up, PSR J2108+4516 promises to serve as another rare laboratory for the exploration of companion winds, circumstellar disks, and short-term evolution through extended-body orbital dynamics.

وصف الملف: electronic resource

العلاقة: https://doaj.org/toc/1538-4357Test

الوصول الحر: https://doaj.org/article/f974aff7635745dab9b955190080730eTest

المؤلفون: The CHIME/FRB Collaboration, Mandana Amiri, Bridget C. Andersen, Kevin Bandura, Sabrina Berger, Mohit Bhardwaj, Michelle M. Boyce, P. J. Boyle, Charanjot Brar, Daniela Breitman, Tomas Cassanelli, Pragya Chawla, Tianyue Chen, J.-F. Cliche, Amanda Cook, Davor Cubranic, Alice P. Curtin, Meiling Deng, Matt Dobbs, Fengqiu (Adam) Dong, Gwendolyn Eadie, Mateus Fandino, Emmanuel Fonseca, B. M. Gaensler, Utkarsh Giri, Deborah C. Good, Mark Halpern, Alex S. Hill, Gary Hinshaw, Alexander Josephy, Jane F. Kaczmarek, Zarif Kader, Joseph W. Kania, Victoria M. Kaspi, T. L. Landecker, Dustin Lang, Calvin Leung, Dongzi Li, Hsiu-Hsien Lin, Kiyoshi W. Masui, Ryan Mckinven, Juan Mena-Parra, Marcus Merryfield, Bradley W. Meyers, Daniele Michilli, Nikola Milutinovic, Arash Mirhosseini, Moritz Münchmeyer, Arun Naidu, Laura Newburgh, Cherry Ng, Chitrang Patel, Ue-Li Pen, Emily Petroff, Tristan Pinsonneault-Marotte, Ziggy Pleunis, Masoud Rafiei-Ravandi, Mubdi Rahman, Scott M. Ransom, Andre Renard, Pranav Sanghavi, Paul Scholz, J. Richard Shaw, Kaitlyn Shin, Seth R. Siegel, Andrew E. Sikora, Saurabh Singh, Kendrick M. Smith, Ingrid Stairs, Chia Min Tan, S. P. Tendulkar, Keith Vanderlinde, Haochen Wang, Dallas Wulf, A. V. Zwaniga

المصدر: The Astrophysical Journal Supplement Series, Vol 264, Iss 2, p 53 (2023)

مصطلحات موضوعية: Astrophysics, QB460-466

وصف الملف: electronic resource

العلاقة: https://doaj.org/toc/0067-0049Test

الوصول الحر: https://doaj.org/article/1823e529a2354bddbcf3df01f1b1a94aTest

المؤلفون: Bridget C. Andersen, Emmanuel Fonseca, J. W. McKee, B. W. Meyers, Jing Luo, C. M. Tan, I. H. Stairs, Victoria M. Kaspi, M. H. van Kerkwijk, Mohit Bhardwaj, P. J. Boyle, Kathryn Crowter, Paul B. Demorest, Fengqiu A. Dong, Deborah C. Good, Jane F. Kaczmarek, Calvin Leung, Kiyoshi W. Masui, Arun Naidu, Cherry Ng, Chitrang Patel, Aaron B. Pearlman, Ziggy Pleunis, Masoud Rafiei-Ravandi, Mubdi Rahman, Scott M. Ransom, Kendrick M. Smith, Shriharsh P. Tendulkar

مصطلحات موضوعية: High Energy Astrophysical Phenomena (astro-ph.HE), Space and Planetary Science, FOS: Physical sciences, Astronomy and Astrophysics, Astrophysics - High Energy Astrophysical Phenomena

الوصف: Of the more than $3{,}000$ radio pulsars currently known, only ${\sim}300$ are in binary systems, and only five of these consist of young pulsars with massive non-degenerate companions. We present the discovery and initial timing, accomplished using the Canadian Hydrogen Intensity Mapping Experiment telescope (CHIME), of the sixth such binary pulsar, PSR J2108+4516, a $0.577$-s radio pulsar in a 269-day orbit of eccentricity 0.09 with a companion of minimum mass $11$ M$_{\odot}$. Notably, the pulsar undergoes periods of substantial eclipse, disappearing from the CHIME $400{-}800$ MHz observing band for a large fraction of its orbit, and displays significant dispersion measure and scattering variations throughout its orbit, pointing to the possibility of a circumstellar disk or very dense stellar wind associated with the companion star. Subarcsecond resolution imaging with the Karl G. Jansky Very Large Array unambiguously demonstrates that the companion is a bright, $V \simeq 11$ OBe star, EM* UHA 138, located at a distance of $3.26(14)$ kpc. Archival optical observations of \companion{} approximately suggest a companion mass ranging from $17.5$ M$_{\odot} < M_{\rm c} < 23$ M$_{\odot}$, in turn constraining the orbital inclination angle to $50.3^{\circ} \lesssim i \lesssim 58.3^{\circ}$. With further multi-wavelength followup, PSR J2108+4516 promises to serve as another rare laboratory for the exploration of companion winds, circumstellar disks, and short-term evolution through extended-body orbital dynamics.
20 pages, 12 figures, accepted by ApJ

الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cbbf23d47a349c646a9807aebd667c3bTest
http://arxiv.org/abs/2209.06895Test

المؤلفون: null The CHIME/FRB Collaboration, Mandana Amiri, Bridget C. Andersen, Kevin Bandura, Sabrina Berger, Mohit Bhardwaj, Michelle M. Boyce, P. J. Boyle, Charanjot Brar, Daniela Breitman, Tomas Cassanelli, Pragya Chawla, Tianyue Chen, J.-F. Cliche, Amanda Cook, Davor Cubranic, Alice P. Curtin, Meiling Deng, Matt Dobbs, Fengqiu (Adam) Dong, Gwendolyn Eadie, Mateus Fandino, Emmanuel Fonseca, B. M. Gaensler, Utkarsh Giri, Deborah C. Good, Mark Halpern, Alex S. Hill, Gary Hinshaw, Alexander Josephy, Jane F. Kaczmarek, Zarif Kader, Joseph W. Kania, Victoria M. Kaspi, T. L. Landecker, Dustin Lang, Calvin Leung, Dongzi Li, Hsiu-Hsien Lin, Kiyoshi W. Masui, Ryan Mckinven, Juan Mena-Parra, Marcus Merryfield, Bradley W. Meyers, Daniele Michilli, Nikola Milutinovic, Arash Mirhosseini, Moritz Münchmeyer, Arun Naidu, Laura Newburgh, Cherry Ng, Chitrang Patel, Ue-Li Pen, Emily Petroff, Tristan Pinsonneault-Marotte, Ziggy Pleunis, Masoud Rafiei-Ravandi, Mubdi Rahman, Scott M. Ransom, Andre Renard, Pranav Sanghavi, Paul Scholz, J. Richard Shaw, Kaitlyn Shin, Seth R. Siegel, Andrew E. Sikora, Saurabh Singh, Kendrick M. Smith, Ingrid Stairs, Chia Min Tan, S. P. Tendulkar, Keith Vanderlinde, Haochen Wang, Dallas Wulf, A. V. Zwaniga

المصدر: The Astrophysical Journal Supplement Series. 264:53

مصطلحات موضوعية: Space and Planetary Science, Astronomy and Astrophysics

الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_________::5fe113caa480f78b8a242ea44e13d343Test
https://doi.org/10.3847/1538-4365/acb54cTest

المؤلفون: Steve Croft, Tessa Vernstrom, Charles L. H. Hull, M. C. H. Wright, A. Clegg, Peter Williams, Bryan Gaensler, Jane F. Kaczmarek, George Heald, Subhashis Roy, Timothy W. Shimwell, C. Tasse, Allison H. Costa, G. C. Bower, Yik Ki Ma, C. J. Riseley, Makoto Inoue, Shane O'Sullivan, Torsten A. Enßlin, Charlotte Sobey, Sui Ann Mao, Jeroen Stil, Marcus Brüggen, C. J. Law, M. Haverkorn, Tracy E. Clarke, F. de Gasperin, C. L. Van Eck, R. Shanahan, Craig S. Anderson, V. Vacca, S. K. Betti, Sebastian Hutschenreuter, Jo-Anne Brown, Melanie Johnston-Hollitt, E. Carretti, Dave MacMahon

المصدر: Astronomy & Astrophysics, 657, 1-14
Astronomy & Astrophysics, 657:A43
Astronomy & Astrophysics, 657, pp. 1-14

مصطلحات موضوعية: Physics, 010308 nuclear & particles physics, Galaxy: General, media_common.quotation_subject, Astronomy, FOS: Physical sciences, Astronomy and Astrophysics, Astrophysics, 01 natural sciences, Astrophysics - Astrophysics of Galaxies, Galaxy: Structure, symbols.namesake, ISM: Magnetic Fields, Space and Planetary Science, Sky, Astrophysics of Galaxies (astro-ph.GA), 0103 physical sciences, Faraday effect, symbols, ISM: Structure, 010303 astronomy & astrophysics, Astrophysics::Galaxy Astrophysics, media_common

الوصف: This work gives an update to existing reconstructions of the Galactic Faraday rotation sky by processing almost all Faraday rotation data sets available at the end of the year 2020. Observations of extra-Galactic sources in recent years have, among other regions, further illuminated the previously under-constrained southern celestial sky, as well as parts of the inner disc of the Milky Way. This has culminated in an all-sky data set of 55,190 data points, which is a significant expansion on the 41,330 used in previous works, hence making an updated separation of the Galactic component a promising venture. The increased source density allows us to present our results in a resolution of about $1.3\cdot 10^{-2}\, \mathrm{deg}^2$ ($46.8\,\mathrm{arcmin}^2$), which is a twofold increase compared to previous works. As for previous Faraday rotation sky reconstructions, this work is based on information field theory, a Bayesian inference scheme for field-like quantities which handles noisy and incomplete data. In contrast to previous reconstructions, we find a significantly thinner and pronounced Galactic disc with small-scale structures exceeding values of several thousand $\mathrm{rad}\,\mathrm{m}^{-2}$. The improvements can mainly be attributed to the new catalog of Faraday data, but are also supported by advances in correlation structure modeling within numerical information field theory. We furthermore give a detailed discussion on statistical properties of the Faraday rotation sky and investigate correlations to other data sets.
Comment: accepted in A&A; 15 pages, 12 Figures; results at https://wwwmpa.mpa-garching.mpg.de/~ensslin/research/data/faraday2020.htmlTest and http://cutouts.cirada.ca/rmcutoutTest

وصف الملف: application/pdf

الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bb34861166d0495863684e0e2f62f622Test
http://hdl.handle.net/2066/246381Test

المؤلفون: S. P. van den Heever, Fereshteh Rajabi, J. Quick, A. Caratti o Garatti, G. C. MacLeod, Martin Houde, Xi Chen, James O. Chibueze, Todd R. Hunter, A. M. Sobolev, Yu Saito, Crystal Brogan, Shari Breen, Koichiro Sugiyama, H. Linz, S. Schmidl, B. Stecklum, Ross A. Burns, Willem A. Baan, Jane F. Kaczmarek, Yoshinori Yonekura

المساهمون: 29697492 - Chibueze, James Okwe

المصدر: Mon. Not. R. Astron. Soc.
Monthly Notices of the Royal Astronomical Society

مصطلحات موضوعية: Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics, law.invention, chemistry.chemical_compound, law, protostars [Stars], Astrophysics::Solar and Stellar Astrophysics, Masers, Maser, Solar and Stellar Astrophysics (astro-ph.SR), Astrophysics::Galaxy Astrophysics, formation [Stars], molecules [ISM], Physics, Astronomy and Astrophysics, individual objects: MMB G358.931-0.030 [ISM], Astrophysics - Astrophysics of Galaxies, ISM [Radio lines], Astrophysics - Solar and Stellar Astrophysics, chemistry, Space and Planetary Science, Astrophysics of Galaxies (astro-ph.GA), Methanol, Energy source, Flare

الوصف: We report the detection of new 12.178, 12.229, 20.347, and 23.121 GHz methanol masers in the massive star-forming region G358.93-0.03, which are flaring on similarly short timescales (days) as the 6.668 GHz methanol masers also associated with this source. The brightest 12.178 GHz channel increased by a factor of over 700 in just 50 d. The masers found in the 12.229 and 20.347 GHz methanol transitions are the first ever reported and this is only the fourth object to exhibit associated 23.121 GHz methanol masers. The 12.178 GHz methanol maser emission appears to have a higher flux density than that of the 6.668 GHz emission, which is unusual. No associated near-infrared flare counterpart was found, suggesting that the energy source of the flare is deeply embedded.
9 pages, 3 figures, 2 tables, Published in MNRAS

وصف الملف: application/pdf

الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6911e093c98fa5083f9a009810a049f7Test
https://doi.org/10.1093/mnras/stz2417Test

المؤلفون: Matt Dobbs, Ingrid H. Stairs, Pranav Sanghavi, Mohit Bhardwaj, P. Chawla, Hsiu-Hsien Lin, A. V. Zwaniga, Mark Halpern, Tomas Cassanelli, Cherry Ng, Dustin Lang, Kendrick M. Smith, K. Vanderlinde, Paul Scholz, Victoria M. Kaspi, Charanjot Brar, Bryan Gaensler, Sabrina Berger, C. Patel, Calvin Leung, Daniele Michilli, Fengqiu Adam Dong, B. W. Meyers, Daniela Breitman, Jane F. Kaczmarek, A. Josephy, Utkarsh Giri, Kevin Bandura, J. Mena-Parra, P. J. Boyle, Mubdi Rahman, Shriharsh P. Tendulkar, Ziggy Pleunis, Moritz Münchmeyer, Deborah C. Good, Kaitlyn Shin, Emily Petroff, Kiyoshi Masui, Emmanuel Fonseca, D. Z. Li, M. Rafiei-Ravandi

المساهمون: High Energy Astrophys. & Astropart. Phys (API, FNWI)

المصدر: Astrophysical Journal, 922(1):42. IOP Publishing Ltd.

مصطلحات موضوعية: Physics, High Energy Astrophysical Phenomena (astro-ph.HE), Cosmology and Nongalactic Astrophysics (astro-ph.CO), high energy astrophysics, 010308 nuclear & particles physics, FOS: Physical sciences, Astronomy and Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, 01 natural sciences, Space and Planetary Science, 0103 physical sciences, Scale structure, Statistical physics, large-scale structure of the universe, radio transient sources, Astrophysics - High Energy Astrophysical Phenomena, 010303 astronomy & astrophysics, cosmology, Astrophysics::Galaxy Astrophysics, Astrophysics - Cosmology and Nongalactic Astrophysics

الوصف: The CHIME/FRB Project has recently released its first catalog of fast radio bursts (FRBs), containing 492 unique sources. We present results from angular cross-correlations of CHIME/FRB sources with galaxy catalogs. We find a statistically significant ($p$-value $\sim 10^{-4}$, accounting for look-elsewhere factors) cross-correlation between CHIME FRBs and galaxies in the redshift range $0.3 \lesssim z \lesssim 0.5$, in three photometric galaxy surveys: WISE$\times$SCOS, DESI-BGS, and DESI-LRG. The level of cross-correlation is consistent with an order-one fraction of the CHIME FRBs being in the same dark matter halos as survey galaxies in this redshift range. We find statistical evidence for a population of FRBs with large host dispersion measure ($\sim 400$ pc cm$^{-3}$), and show that this can plausibly arise from gas in large halos ($M \sim 10^{14} M_\odot$), for FRBs near the halo center ($r \lesssim 100$ kpc). These results will improve in future CHIME/FRB catalogs, with more FRBs and better angular resolution.
26 pages, 16 figures, published in ApJ

وصف الملف: application/pdf

الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b0080ff1f396d9d6fe402f97cf2e427fTest
http://arxiv.org/abs/2106.04354Test