FRB131104 Swift/BAT Data Revisited: No Evidence of a Gamma-Ray Counterpart
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We present a reanalysis of the Swift Burst Alert Telescope (BAT) data around the radio detection of FRB 131104. Possible evidence of a gamma-ray counterpart was presented by DeLaunay et al. However, based on our analysis using all the available BAT data, no significant emission is found in either the temporal or the image domain. We place a 5 sigma fluence upper limit of 3.3 x 10(-6) erg cm(-2) and 2.7 x 10(-6) erg cm(-2) (15-150 keV) with an integration time of 300 s assuming a simple power-law spectrum with photon index of -1.2 and -2.0, respectively. Our result does not support the association of this FRB with a high-energy counterpart, in agreement with growing observational evidence that most FRBs are not associated with catastrophic events such as gamma-ray bursts.
Radio transient sources; Swift burst alert telescope; Radio detection; Fast radio bursts; Gamma-ray
Astrophysics and Astronomy | Physical Sciences and Mathematics
Cenko, S. B.,
FRB131104 Swift/BAT Data Revisited: No Evidence of a Gamma-Ray Counterpart.
Astrophysical Journal, 908(2),