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Title: Fast radio burst/gamma-ray burst cosmography

Recently, both theoretical arguments and observational evidence suggested that a small fraction of fast radio bursts (FRBs) could be associated with gamma-ray bursts (GRBs). If such FRB/GRB association systems are commonly detected in the future, the combination of dispersion measures (DM) derived from FRBs and redshifts derived from GRBs makes these systems a plausible tool to conduct cosmography. We quantify uncertainties in deriving the redshift-dependent DM{sub IGM} as a function of z and test how well dark energy models can be constrained with Monte Carlo simulations. We show that with several tens of FRB/GRB systems potentially detected in a decade or so, one may reach reasonable constraints on wCDM models. When combined with Type Ia supernova (SN Ia) data, unprecedented constraints on the dark energy equation of state may be achieved, thanks to the prospects of detecting FRB/GRB systems at relatively high redshifts. The ratio between the mean value and luminosity distance (D {sub L}(z)) is insensitive to dark energy models. This gives the prospect of applying SN Ia data to calibrate using a relatively small sample of FRB/GRB systems, allowing a reliable constraint on the baryon inhomogeneity distribution as a function of redshift. The methodology developed in this papermore » can also be applied if the FRB redshifts can be measured by other means. Some caveats of putting this method into practice are also discussed.« less
Authors:
;  [1] ;  [2]
  1. Department of Physics and Astronomy, University of Nevada Las Vegas, NV 89154 (United States)
  2. Department of Astronomy, School of Physics, Peking University, Beijing 100871 (China)
Publication Date:
OSTI Identifier:
22356545
Resource Type:
Journal Article
Resource Relation:
Journal Name: Astrophysical Journal; Journal Volume: 788; Journal Issue: 2; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; COMPUTERIZED SIMULATION; COSMIC GAMMA BURSTS; DISPERSIONS; DISTANCE; DISTRIBUTION; EQUATIONS OF STATE; LUMINOSITY; MONTE CARLO METHOD; NONLUMINOUS MATTER; RED SHIFT; SOLAR RADIO BURSTS