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CHIME/FRB catalog 1 results: statistical cross-correlations with large-scale structure

From National Research Council Canada

DOIResolve DOI: https://doi.org/10.3847/1538-4357/ac1dab
AuthorSearch for: ORCID identifier: https://orcid.org/0000-0001-7694-6650; Search for: ORCID identifier: https://orcid.org/0000-0002-2088-3125; Search for: ORCID identifier: https://orcid.org/0000-0001-7931-0607; Search for: ORCID identifier: https://orcid.org/0000-0002-4279-6946; Search for: ORCID identifier: https://orcid.org/0000-0003-3059-6223; Search for: ORCID identifier: https://orcid.org/0000-0001-7166-6422; Search for: ORCID identifier: https://orcid.org/0000-0002-1172-0754; Search for: ORCID identifier: https://orcid.org/0000-0002-3615-3514; Search for: ORCID identifier: https://orcid.org/0000-0003-3367-1073; Search for: ORCID identifier: https://orcid.org/0000-0003-3772-2798; Search for: ORCID identifier: https://orcid.org/0000-0002-4064-7883; Search for: ORCID identifier: https://orcid.org/0000-0001-8537-9299; Search for: ORCID identifier: https://orcid.org/0000-0002-1800-8233; Search for: ORCID identifier: https://orcid.org/0000-0002-2349-3341; Search for: ORCID identifier: https://orcid.org/0000-0003-2047-5276; Search for: ORCID identifier: https://orcid.org/0000-0002-3426-7606; Search for: ORCID identifier: https://orcid.org/0000-0003-4098-5222; Search for: ORCID identifier: https://orcid.org/0000-0001-8384-5049; Search for: ORCID identifier: https://orcid.org/0000-0002-3382-9558; Search for: ORCID identifier: https://orcid.org/0000-0001-5553-9167; Search for: ORCID identifier: https://orcid.org/0000-0003-1884-348X; Search for: ORCID identifier: https://orcid.org/0000-0002-1760-0868; Search for: 1ORCID identifier: https://orcid.org/0000-0003-4810-7803; Search for: ORCID identifier: https://orcid.org/0000-0001-9345-0307; Search for: ORCID identifier: https://orcid.org/0000-0002-4209-7408; Search for: ORCID identifier: https://orcid.org/0000-0001-7453-4273; Search for: ORCID identifier: https://orcid.org/0000-0002-0772-9326; Search for: ORCID identifier: https://orcid.org/0000-0001-8845-1225; Search for: ORCID identifier: https://orcid.org/0000-0002-2551-7554; Search for: ORCID identifier: https://orcid.org/0000-0002-3777-7791; Search for: ORCID identifier: https://orcid.org/0000-0002-3616-5160; Search for: ORCID identifier: https://orcid.org/0000-0002-9822-8008; Search for: ORCID identifier: https://orcid.org/0000-0002-4795-697X; Search for: ORCID identifier: https://orcid.org/0000-0003-1842-6096; Search for: ORCID identifier: https://orcid.org/0000-0001-5504-229X; Search for: ORCID identifier: https://orcid.org/0000-0002-7374-7119; Search for: ORCID identifier: https://orcid.org/0000-0002-6823-2073; Search for: ORCID identifier: https://orcid.org/0000-0001-9784-8670; Search for: ORCID identifier: https://orcid.org/0000-0003-2548-2926; Search for: ORCID identifier: https://orcid.org/0000-0003-4535-9378; Search for: ORCID identifier: https://orcid.org/0000-0001-8278-1936
Affiliation
  1. National Research Council of Canada. Herzberg Astronomy and Astrophysics
FunderSearch for: Canada Foundation for Innovation; Search for: National Science Foundation; Search for: Natural Sciences and Engineering Research Council of Canada
FormatText, Article
Subjectradio transient sources; large-scale structure of the universe; high energy astrophysics; cosmology
Abstract
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.
Publication date
PublisherThe American Astronomical Society
In
  • The Astrophysical Journal 922, no. 1, 42 (18 November 2021).
LanguageEnglish
Peer reviewedYes
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Record identifier1d172938-d132-4eb1-bdc8-23330178b753
Record created2023-01-04
Record modified2023-03-16
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