Details

Autor(en) / Beteiligte

• Sakamoto, T.
• Troja, E.
• Lien, A.
• Zhang, B.
• Cenko, S. B.
• Cunningham, V.
• Berger, E.

Titel

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

Ist Teil von

• The Astrophysical journal, 2021-02, Vol.908 (2), p.137

Ort / Verlag

Goddard Space Flight Center: The American Astronomical Society

Erscheinungsjahr

2021

Link zum Volltext

Quelle

EZB Electronic Journals Library

Beschreibungen/Notizen

• 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 5σ fluence upper limit of 3.3 × 10−6 erg cm−2 and 2.7 × 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.