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Title: COSMOLOGICAL IMPLICATIONS OF FAST RADIO BURST/GAMMA-RAY BURST ASSOCIATIONS

Abstract

If a small fraction of fast radio bursts (FRBs) are associated with gamma-ray bursts (GRBs), as recently suggested by Zhang, the combination of redshift measurements of GRBs and dispersion measure (DM) measurements of FRBs opens a new window to study cosmology. At z < 2 where the universe is essentially fully ionized, detections of FRB/GRB pairs can give an independent measurement of the intergalactic medium portion of the baryon mass fraction, Ω {sub b} f {sub IGM}, of the universe. If a good sample of FRB/GRB associations are discovered at higher redshifts, the free electron column density history can be mapped, which can be used to probe the reionization history of both hydrogen and helium in the universe. We apply our formulation to GRBs 101011A and 100704A that each might have an associated FRB, and constrained Ω {sub b} f {sub IGM} to be consistent with the value derived from other methods. The methodology developed here is also applicable, if the redshifts of FRBs not associated with GRBs can be measured by other means.

Authors:
;  [1]
  1. Department of Physics and Astronomy, University of Nevada Las Vegas, Las Vegas, NV 89154 (United States)
Publication Date:
OSTI Identifier:
22365984
Resource Type:
Journal Article
Journal Name:
Astrophysical Journal Letters
Additional Journal Information:
Journal Volume: 783; Journal Issue: 2; Other Information: Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 2041-8205
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; BARYONS; COSMIC GAMMA BURSTS; COSMOLOGY; DENSITY; DETECTION; ELECTRONS; HYDROGEN; MASS; PROBES; RED SHIFT; STARS; UNIVERSE

Citation Formats

Deng, Wei, and Zhang, Bing. COSMOLOGICAL IMPLICATIONS OF FAST RADIO BURST/GAMMA-RAY BURST ASSOCIATIONS. United States: N. p., 2014. Web. doi:10.1088/2041-8205/783/2/L35.
Deng, Wei, & Zhang, Bing. COSMOLOGICAL IMPLICATIONS OF FAST RADIO BURST/GAMMA-RAY BURST ASSOCIATIONS. United States. https://doi.org/10.1088/2041-8205/783/2/L35
Deng, Wei, and Zhang, Bing. 2014. "COSMOLOGICAL IMPLICATIONS OF FAST RADIO BURST/GAMMA-RAY BURST ASSOCIATIONS". United States. https://doi.org/10.1088/2041-8205/783/2/L35.
@article{osti_22365984,
title = {COSMOLOGICAL IMPLICATIONS OF FAST RADIO BURST/GAMMA-RAY BURST ASSOCIATIONS},
author = {Deng, Wei and Zhang, Bing},
abstractNote = {If a small fraction of fast radio bursts (FRBs) are associated with gamma-ray bursts (GRBs), as recently suggested by Zhang, the combination of redshift measurements of GRBs and dispersion measure (DM) measurements of FRBs opens a new window to study cosmology. At z < 2 where the universe is essentially fully ionized, detections of FRB/GRB pairs can give an independent measurement of the intergalactic medium portion of the baryon mass fraction, Ω {sub b} f {sub IGM}, of the universe. If a good sample of FRB/GRB associations are discovered at higher redshifts, the free electron column density history can be mapped, which can be used to probe the reionization history of both hydrogen and helium in the universe. We apply our formulation to GRBs 101011A and 100704A that each might have an associated FRB, and constrained Ω {sub b} f {sub IGM} to be consistent with the value derived from other methods. The methodology developed here is also applicable, if the redshifts of FRBs not associated with GRBs can be measured by other means.},
doi = {10.1088/2041-8205/783/2/L35},
url = {https://www.osti.gov/biblio/22365984}, journal = {Astrophysical Journal Letters},
issn = {2041-8205},
number = 2,
volume = 783,
place = {United States},
year = {Mon Mar 10 00:00:00 EDT 2014},
month = {Mon Mar 10 00:00:00 EDT 2014}
}