FRB131104 Swift/BAT Data Revisited: No Evidence of a Gamma-Ray Counterpart

We present a reanalysis of the Swift Burst Alert Telescope (BAT) data around radio detection FRB 131104. Possible evidence gamma-ray counterpart was presented by DeLaunay et al. However, based on our analysis using all available BAT data, no significant emission is found in either temporal or image domain. place 5σ fluence upper limit 3.3 × 10−6 erg cm−2 and 2.7 (15–150 keV) with an integration time 300 s assuming simple power-law spectrum photon index −1.2 −2.0, respectively. Our result does not support association this high-energy counterpart, agreement growing observational that most FRBs are associated catastrophic events such as bursts.