GCN Circular 42328
Subject
Swift Trigger 1404295 is not a GRB
Date
2025-10-17T15:26:20Z (4 days ago)
From
Rahul Gupta at NASA GSFC <rahul.gupta@nasa.gov>
Via
Web form
R. Gupta (NASA GSFC), N. J. Klingler (GSFC/UMBC/CRESSTII), D. M. Palmer (LANL),
and T. Sbarrato (INAF-OAB) report on behalf of the Neil Gehrels
Swift Observatory Team:
Using the data set from T-183 to T+963 sec from telemetry downlinks,
we report further analysis of BAT trigger #1404295 (Klingler, et al.,
GCN Circ. 42290). This trigger is due to noise in the BAT image domain,
with no significant emission detected in the mask-weighted light curve.
No confirmed counterpart is found in the XRT or UVOT data within the BAT
error circle, indicating that the trigger is not a real astrophysical event.