GCN Circular 45769
Subject
Swift Trigger 1513439: consistent with noise and not astrophysical
Date
2026-09-27T16:15:04Z (4 hours ago)
From
Amy <yarleen@gmail.com>
Via
email
A. Y. Lien (U Tampa), V. D'Elia (SSDC & INAF-OAR), R. Gupta (NASA GSFC), K.
L. Page (U Leicester), D. M. Palmer (LANL), B. Sbarufatti (INAF-OAB) and M.
H. Siegel (PSU) report on behalf of the Neil Gehrels Swift Observatory Team:
Using the full data set from recent downlinks, we report further ground
data analysis for Swift trigger 1513439 (D'Elia et al. GCN Circ. 45753).
The BAT analysis uses data from T-179 s to T+723 s. The image significance
decreases to 4.0 sigma, and the BAT mask-weighted light does not show any
significant structure.
We thus conclude that this trigger was consistent with noise fluctuations.