The First CHIME/FRB Fast Radio Burst Catalog
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Published:2021-12-01
Issue:2
Volume:257
Page:59
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ISSN:0067-0049
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Container-title:The Astrophysical Journal Supplement Series
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language:
-
Short-container-title:ApJS
Author:
Amiri MandanaORCID, Andersen Bridget C.ORCID, Bandura KevinORCID, Berger SabrinaORCID, Bhardwaj MohitORCID, Boyce Michelle M.ORCID, Boyle P. J.ORCID, Brar CharanjotORCID, Breitman DanielaORCID, Cassanelli TomasORCID, Chawla PragyaORCID, Chen TianyueORCID, Cliche J.-F.ORCID, Cook AmandaORCID, Cubranic DavorORCID, Curtin Alice P.ORCID, Deng MeilingORCID, Dobbs MattORCID, (Adam) Dong FengqiuORCID, Eadie GwendolynORCID, Fandino MateusORCID, Fonseca EmmanuelORCID, Gaensler B. M.ORCID, Giri UtkarshORCID, Good Deborah C.ORCID, Halpern MarkORCID, Hill Alex S.ORCID, Hinshaw GaryORCID, Josephy AlexanderORCID, Kaczmarek Jane F.ORCID, Kader ZarifORCID, Kania Joseph W.ORCID, Kaspi Victoria M.ORCID, Landecker T. L.ORCID, Lang DustinORCID, Leung CalvinORCID, Li DongziORCID, Lin Hsiu-HsienORCID, Masui Kiyoshi W.ORCID, Mckinven RyanORCID, Mena-Parra JuanORCID, Merryfield MarcusORCID, Meyers Bradley W.ORCID, Michilli DanieleORCID, Milutinovic NikolaORCID, Mirhosseini ArashORCID, Münchmeyer MoritzORCID, Naidu ArunORCID, Newburgh LauraORCID, Ng CherryORCID, Patel ChitrangORCID, Pen Ue-LiORCID, Petroff EmilyORCID, Pinsonneault-Marotte TristanORCID, Pleunis ZiggyORCID, Rafiei-Ravandi MasoudORCID, Rahman MubdiORCID, Ransom Scott M.ORCID, Renard AndreORCID, Sanghavi PranavORCID, Scholz PaulORCID, Shaw J. RichardORCID, Shin KaitlynORCID, Siegel Seth R.ORCID, Sikora Andrew E.ORCID, Singh SaurabhORCID, Smith Kendrick M.ORCID, Stairs IngridORCID, Tan Chia MinORCID, Tendulkar S. P.ORCID, Vanderlinde KeithORCID, Wang HaochenORCID, Wulf DallasORCID, Zwaniga A. V.ORCID
Abstract
Abstract
We present a catalog of 536 fast radio bursts (FRBs) detected by the Canadian Hydrogen Intensity Mapping Experiment Fast Radio Burst (CHIME/FRB) Project between 400 and 800 MHz from 2018 July 25 to 2019 July 1, including 62 bursts from 18 previously reported repeating sources. The catalog represents the first large sample, including bursts from repeaters and nonrepeaters, observed in a single survey with uniform selection effects. This facilitates comparative and absolute studies of the FRB population. We show that repeaters and apparent nonrepeaters have sky locations and dispersion measures (DMs) that are consistent with being drawn from the same distribution. However, bursts from repeating sources differ from apparent nonrepeaters in intrinsic temporal width and spectral bandwidth. Through injection of simulated events into our detection pipeline, we perform an absolute calibration of selection effects to account for systematic biases. We find evidence for a population of FRBs—composing a large fraction of the overall population—with a scattering time at 600 MHz in excess of 10 ms, of which only a small fraction are observed by CHIME/FRB. We infer a power-law index for the cumulative fluence distribution of
α
=
−
1.40
±
0.11
(
stat.
)
−
0.09
+
0.06
(
sys.
)
, consistent with the −3/2 expectation for a nonevolving population in Euclidean space. We find that α is steeper for high-DM events and shallower for low-DM events, which is what would be expected when DM is correlated with distance. We infer a sky rate of
[
820
±
60
(
stat.
)
−
200
+
220
(
sys.
)
]
/
sky
/
day
above a fluence of 5 Jy ms at 600 MHz, with a scattering time at 600 MHz under 10 ms and DM above 100 pc cm−3.
Funder
Canada Foundation for Innovation Gouvernement du Canada ∣ Natural Sciences and Engineering Research Council of Canada National Science Foundation Canadian Institute for Advanced Research Fonds de recherche du Québec – Nature et technologies DOD ∣ National Defense Science and Engineering Graduate
Publisher
American Astronomical Society
Subject
Space and Planetary Science,Astronomy and Astrophysics
Cited by
196 articles.
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