Swift/BAT detection of a soft X-ray flare possibly associated with CHIME/FRB detection of SGR 1935+2154
ATel #14075; Aaron Tohuvavohu (University of Toronto)
on 8 Oct 2020; 21:10 UT
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Credential Certification: Aaron Tohuvavohu (a.tohuvavohu@mail.utoronto.ca)
Subjects: Radio, X-ray, Neutron Star, Soft Gamma-ray Repeater, Transient, Fast Radio Burst, Magnetar
Referred to by ATel #: 14076
We note that preliminary quick look analysis shows an extremely soft and short peak in the 15-25 keV Swift/BAT light curve, at T0-12 seconds from the timestamp of the first burst reported from CHIME/FRB (ATEL #14074). We believe this to be within a few seconds of the expected dispersion corrected prompt emission time. SGR 1935+2154 was in the BAT FoV at this time, it is possible BAT did not autonomously trigger onboard due to increased thresholds for this known source (see eg ATEL #13758).
Event data are not yet available to confirm that this flare comes from SGR 1935+2154, but the temporal coincidence is strongly suggestive.
Further detailed analysis is in progress.
Follow up observations are requested.
