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CHIME/FRB Catalog 1 Results: Statistical Cross-correlations with Large-scale Structure

Rafiei-Ravandi, Masoud and Smith, Kendrick M. and Li, Dongzi and Masui, Kiyoshi W. and Josephy, Alexander and Dobbs, Matt and Lang, Dustin and Bhardwaj, Mohit and Patel, Chitrang and Bandura, Kevin and Berger, Sabrina and Boyle, P. J. and Brar, Charanjot and Breitman, Daniela and Cassanelli, Tomas and Chawla, Pragya and Adam Dong, Fengqiu and Fonseca, Emmanuel and Gaensler, B. M. and Giri, Utkarsh and Good, Deborah C. and Halpern, Mark and Kaczmarek, Jane and Kaspi, Victoria M. and Leung, Calvin and Lin, Hsiu-Hsien and Mena-Parra, Juan and Meyers, B. W. and Michilli, D. and Münchmeyer, Moritz and Ng, Cherry and Petroff, Emily and Pleunis, Ziggy and Rahman, Mubdi and Sanghavi, Pranav and Scholz, Paul and Shin, Kaitlyn and Stairs, Ingrid H. and Tendulkar, Shriharsh P. and Vanderlinde, Keith and Zwaniga, Andrew (2021) CHIME/FRB Catalog 1 Results: Statistical Cross-correlations with Large-scale Structure. Astrophysical Journal, 922 (1). Art. No. 42. ISSN 0004-637X. doi:10.3847/1538-4357/ac1dab.

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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 ∼ 10⁻⁴, accounting for look-elsewhere factors) cross-correlation between CHIME FRBs and galaxies in the redshift range 0.3 ≲ z ≲ 0.5, in three photometric galaxy surveys: WISE × 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 (∼400 pc cm⁻³) and show that this can plausibly arise from gas in large halos (M ∼ 10¹⁴ M_⊙), for FRBs near the halo center (r ≲ 100 kpc). These results will improve in future CHIME/FRB catalogs, with more FRBs and better angular resolution.

Item Type:Article
Related URLs:
URLURL TypeDescription Paper
Rafiei-Ravandi, Masoud0000-0001-7694-6650
Smith, Kendrick M.0000-0002-2088-3125
Li, Dongzi0000-0001-7931-0607
Masui, Kiyoshi W.0000-0002-4279-6946
Josephy, Alexander0000-0003-3059-6223
Dobbs, Matt0000-0001-7166-6422
Lang, Dustin0000-0002-1172-0754
Bhardwaj, Mohit0000-0002-3615-3514
Patel, Chitrang0000-0003-3367-1073
Bandura, Kevin0000-0003-3772-2798
Berger, Sabrina0000-0002-4064-7883
Boyle, P. J.0000-0001-8537-9299
Brar, Charanjot0000-0002-1800-8233
Breitman, Daniela0000-0002-2349-3341
Cassanelli, Tomas0000-0003-2047-5276
Chawla, Pragya0000-0002-3426-7606
Adam Dong, Fengqiu0000-0003-4098-5222
Fonseca, Emmanuel0000-0001-8384-5049
Gaensler, B. M.0000-0002-3382-9558
Giri, Utkarsh0000-0001-5553-9167
Good, Deborah C.0000-0003-1884-348X
Halpern, Mark0000-0002-1760-0868
Kaczmarek, Jane0000-0003-4810-7803
Kaspi, Victoria M.0000-0001-9345-0307
Leung, Calvin0000-0002-4209-7408
Lin, Hsiu-Hsien0000-0001-7453-4273
Mena-Parra, Juan0000-0002-0772-9326
Meyers, B. W.0000-0001-8845-1225
Michilli, D.0000-0002-2551-7554
Münchmeyer, Moritz0000-0002-3777-7791
Ng, Cherry0000-0002-3616-5160
Petroff, Emily0000-0002-9822-8008
Pleunis, Ziggy0000-0002-4795-697X
Rahman, Mubdi0000-0003-1842-6096
Sanghavi, Pranav0000-0001-5504-229X
Scholz, Paul0000-0002-7374-7119
Shin, Kaitlyn0000-0002-6823-2073
Stairs, Ingrid H.0000-0001-9784-8670
Tendulkar, Shriharsh P.0000-0003-2548-2926
Vanderlinde, Keith0000-0003-4535-9378
Zwaniga, Andrew0000-0001-8278-1936
Additional Information:© 2021. The American Astronomical Society. Received 2021 June 10; revised 2021 August 9; accepted 2021 August 14; published 2021 November 18. We thank the Dominion Radio Astrophysical Observatory, operated by the National Research Council Canada, for gracious hospitality and expertise. CHIME is funded by a grant from the Canada Foundation for Innovation (CFI) 2012 Leading Edge Fund (Project 31170) and by contributions from the provinces of British Columbia, Québec, and Ontario. The CHIME/FRB Project is funded by a grant from the CFI 2015 Innovation Fund (Project 33213), by contributions from the provinces of British Columbia and Québec, and by the Dunlap Institute for Astronomy and Astrophysics at the University of Toronto. The Dunlap Institute is funded through an endowment established by the David Dunlap family and the University of Toronto. Additional support was provided by the Canadian Institute for Advanced Research (CIFAR), McGill University and the McGill Space Institute via the Trottier Family Foundation, and the University of British Columbia. Research at Perimeter Institute is supported by the Government of Canada through Industry Canada and by the Province of Ontario through the Ministry of Research & Innovation. K.M.S. was supported by an NSERC Discovery Grant and a CIFAR fellowship. K.W.M. is supported by an NSF grant (2008031). M.D. is supported by a Killam Fellowship, NSERC Discovery Grant, CIFAR, and by the FRQNT Centre de Recherche en Astrophysique du Québec (CRAQ). M.B. is supported by an FRQNT Doctoral Research Award. K. B. is supported by an NSF grant (2006548). P.C. is supported by an FRQNT Doctoral Research Award. B.M.G. is supported by an NSERC Discovery grant (RGPIN-2015-05948) and by the Canada Research Chairs (CRC) program. D.C.G is supported by the John I. Watters Research Fellowship. V.M.K. holds the Lorne Trottier Chair in Astrophysics & Cosmology, a Distinguished James McGill Professorship, and receives support from an NSERC Discovery grant (RGPIN 228738-13) and Gerhard Herzberg Award, from an R. Howard Webster Foundation Fellowship from CIFAR, and from the FRQNT CRAQ. C.L. was supported by the U.S. Department of Defense (DoD) through the National Defense Science & Engineering Graduate Fellowship (NDSEG) Program. J.M.-P is a Kavli Fellow. D.M. is a Banting Fellow. E.P. acknowledges funding from an NWO Veni Fellowship. P.S. is a Dunlap Fellow and an NSERC Postdoctoral Fellow. K.S. is supported by the NSF Graduate Research Fellowship Program. FRB research at UBC is supported by an NSERC Discovery Grant and by CIFAR. This research was enabled in part by support provided by WestGrid ( and Compute Canada ( The Photometric Redshifts for the Legacy Surveys (PRLS) catalog used in this paper was produced thanks to funding from the U.S. Department of Energy Office of Science, Office of High Energy Physics via grant DE-SC0007914.
Funding AgencyGrant Number
Canada Foundation for Innovation31170
Canada Foundation for Innovation33213
Dunlap Institute for Astronomy and AstrophysicsUNSPECIFIED
Canadian Institute for Advanced Research (CIFAR)UNSPECIFIED
McGill UniversityUNSPECIFIED
Trottier Family FoundationUNSPECIFIED
Industry CanadaUNSPECIFIED
Ontario Ministry of Research and InnovationUNSPECIFIED
Fonds de recherche du Québec - Nature et technologies (FRQNT)UNSPECIFIED
Fulbright CanadaUNSPECIFIED
Natural Sciences and Engineering Research Council of Canada (NSERC)RGPIN-2015-05948
Canada Research Chairs ProgramUNSPECIFIED
University of British ColumbiaUNSPECIFIED
Lorne Trottier Chair in Astrophysics and CosmologyUNSPECIFIED
Natural Sciences and Engineering Research Council of Canada (NSERC)RGPIN 228738-13
National Defense Science and Engineering Graduate (NDSEG) FellowshipUNSPECIFIED
Nederlandse Organisatie voor Wetenschappelijk Onderzoek (NWO)UNSPECIFIED
NSF Graduate Research FellowshipUNSPECIFIED
Department of Energy (DOE)DE-SC0007914
Subject Keywords:Radio transient sources; Large-scale structure of the universe; High energy astrophysics; Cosmology
Issue or Number:1
Classification Code:Unified Astronomy Thesaurus concepts: Radio transient sources (2008); Large-scale structure of the universe (902); High energy astrophysics (739); Cosmology (343)
Record Number:CaltechAUTHORS:20211203-204701124
Persistent URL:
Official Citation:Masoud Rafiei-Ravandi et al 2021 ApJ 922 42
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:112200
Deposited By: George Porter
Deposited On:06 Dec 2021 16:32
Last Modified:06 Dec 2021 16:32

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