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Title: Inferring the Energy and Distance Distributions of Fast Radio Bursts Using the First CHIME/FRB Catalog

Abstract

Abstract Fast radio bursts (FRBs) are brief, energetic, typically extragalactic flashes of radio emission whose progenitors are largely unknown. Although studying the FRB population is essential for understanding how these astrophysical phenomena occur, such studies have been difficult to conduct without large numbers of FRBs and characterizable observational biases. Using the recently released catalog of 536 FRBs published by the Canadian Hydrogen Intensity Mapping Experiment/Fast Radio Burst (CHIME/FRB) collaboration, we present a study of the FRB population that also calibrates for selection effects. Assuming a Schechter function, we infer a characteristic energy cut-off of E char = 2.38 1.64 + 5.35 × 10 41 erg and a differential power-law index of γ = 1.3 0.4 + 0.7 . Simultaneously, we infer a volumetric rate of [ 7.3 3.8 + 8.8 (stat.) 1.8 + 2.0 ( sys . ) ] × 10 4 Gpc −3 yr −1 above a pivot energy of 10 39 erg and below a scattering timescale of 10 ms at 600 MHz, and find we cannot significantly constrain the cosmic evolution of the FRB population with star-formation rate. Modeling the host’s dispersion measure (DM) contribution as a log-normal distribution and assuming a total Galactic contribution of 80 pc cm −3 , we find a median value of DM host = 84 49 + 69 pc cm −3 , comparable with values typically used in the literature. Proposed models for FRB progenitors should be consistent with the energetics and abundances of the full FRB population predicted by our results. Finally, we infer the redshift distribution of FRBs detected with CHIME, which will be tested with the localizations and redshifts enabled by the upcoming CHIME/FRB Outriggers project.

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Publication Date:
Sponsoring Org.:
USDOE
OSTI Identifier:
1926756
Grant/Contract Number:  
SC0022342
Resource Type:
Published Article
Journal Name:
The Astrophysical Journal
Additional Journal Information:
Journal Name: The Astrophysical Journal Journal Volume: 944 Journal Issue: 1; Journal ID: ISSN 0004-637X
Publisher:
American Astronomical Society
Country of Publication:
United States
Language:
English

Citation Formats

Shin, Kaitlyn, Masui, Kiyoshi W., Bhardwaj, Mohit, Cassanelli, Tomas, Chawla, Pragya, Dobbs, Matt, Dong, Fengqiu Adam, Fonseca, Emmanuel, Gaensler, B. M., Herrera-Martín, Antonio, Kaczmarek, Jane, Kaspi, Victoria, Leung, Calvin, Merryfield, Marcus, Michilli, Daniele, Münchmeyer, Moritz, Pearlman, Aaron B., Rafiei-Ravandi, Masoud, Smith, Kendrick, Stairs, Ingrid, and Tendulkar, Shriharsh P. Inferring the Energy and Distance Distributions of Fast Radio Bursts Using the First CHIME/FRB Catalog. United States: N. p., 2023. Web. doi:10.3847/1538-4357/acaf06.
Shin, Kaitlyn, Masui, Kiyoshi W., Bhardwaj, Mohit, Cassanelli, Tomas, Chawla, Pragya, Dobbs, Matt, Dong, Fengqiu Adam, Fonseca, Emmanuel, Gaensler, B. M., Herrera-Martín, Antonio, Kaczmarek, Jane, Kaspi, Victoria, Leung, Calvin, Merryfield, Marcus, Michilli, Daniele, Münchmeyer, Moritz, Pearlman, Aaron B., Rafiei-Ravandi, Masoud, Smith, Kendrick, Stairs, Ingrid, & Tendulkar, Shriharsh P. Inferring the Energy and Distance Distributions of Fast Radio Bursts Using the First CHIME/FRB Catalog. United States. https://doi.org/10.3847/1538-4357/acaf06
Shin, Kaitlyn, Masui, Kiyoshi W., Bhardwaj, Mohit, Cassanelli, Tomas, Chawla, Pragya, Dobbs, Matt, Dong, Fengqiu Adam, Fonseca, Emmanuel, Gaensler, B. M., Herrera-Martín, Antonio, Kaczmarek, Jane, Kaspi, Victoria, Leung, Calvin, Merryfield, Marcus, Michilli, Daniele, Münchmeyer, Moritz, Pearlman, Aaron B., Rafiei-Ravandi, Masoud, Smith, Kendrick, Stairs, Ingrid, and Tendulkar, Shriharsh P. Wed . "Inferring the Energy and Distance Distributions of Fast Radio Bursts Using the First CHIME/FRB Catalog". United States. https://doi.org/10.3847/1538-4357/acaf06.
@article{osti_1926756,
title = {Inferring the Energy and Distance Distributions of Fast Radio Bursts Using the First CHIME/FRB Catalog},
author = {Shin, Kaitlyn and Masui, Kiyoshi W. and Bhardwaj, Mohit and Cassanelli, Tomas and Chawla, Pragya and Dobbs, Matt and Dong, Fengqiu Adam and Fonseca, Emmanuel and Gaensler, B. M. and Herrera-Martín, Antonio and Kaczmarek, Jane and Kaspi, Victoria and Leung, Calvin and Merryfield, Marcus and Michilli, Daniele and Münchmeyer, Moritz and Pearlman, Aaron B. and Rafiei-Ravandi, Masoud and Smith, Kendrick and Stairs, Ingrid and Tendulkar, Shriharsh P.},
abstractNote = {Abstract Fast radio bursts (FRBs) are brief, energetic, typically extragalactic flashes of radio emission whose progenitors are largely unknown. Although studying the FRB population is essential for understanding how these astrophysical phenomena occur, such studies have been difficult to conduct without large numbers of FRBs and characterizable observational biases. Using the recently released catalog of 536 FRBs published by the Canadian Hydrogen Intensity Mapping Experiment/Fast Radio Burst (CHIME/FRB) collaboration, we present a study of the FRB population that also calibrates for selection effects. Assuming a Schechter function, we infer a characteristic energy cut-off of E char = 2.38 − 1.64 + 5.35 × 10 41 erg and a differential power-law index of γ = − 1.3 − 0.4 + 0.7 . Simultaneously, we infer a volumetric rate of [ 7.3 − 3.8 + 8.8 (stat.) − 1.8 + 2.0 ( sys . ) ] × 10 4 Gpc −3 yr −1 above a pivot energy of 10 39 erg and below a scattering timescale of 10 ms at 600 MHz, and find we cannot significantly constrain the cosmic evolution of the FRB population with star-formation rate. Modeling the host’s dispersion measure (DM) contribution as a log-normal distribution and assuming a total Galactic contribution of 80 pc cm −3 , we find a median value of DM host = 84 − 49 + 69 pc cm −3 , comparable with values typically used in the literature. Proposed models for FRB progenitors should be consistent with the energetics and abundances of the full FRB population predicted by our results. Finally, we infer the redshift distribution of FRBs detected with CHIME, which will be tested with the localizations and redshifts enabled by the upcoming CHIME/FRB Outriggers project.},
doi = {10.3847/1538-4357/acaf06},
journal = {The Astrophysical Journal},
number = 1,
volume = 944,
place = {United States},
year = {Wed Feb 15 00:00:00 EST 2023},
month = {Wed Feb 15 00:00:00 EST 2023}
}

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