GRB 260924A: Swift/UVOT Upper Limits
GCN Circular 45731
GRB 260924A: Swift/UVOT Upper Limits
From: unknown
Issued: 2026-09-24 19:14 UTC
Type: GRB, Optical Transient
***UPDATE***: Please disregard this circular; an aspect solution issue caused an erroneous non-detection in the automated UVOT data processing system. We will put out a revised circular shortly.
Filter: gamma-ray bursts are posted only if in the top 10% of the past year's — by fluence (total energy received per cm², from Fermi GBM, Konus-Wind, GECAM and similar circulars; now ≥ 3.9×10^-5 erg/cm²) or by the number of GCN Circulars about the burst (now ≥ 14). Thresholds are recalculated monthly.
Relayed automatically from NASA's General Coordinates Network.