TITLE:   GCN CIRCULAR
NUMBER:  34307
SUBJECT: LIGO/Virgo/KAGRA S230731an: not observable by Fermi-GBM
DATE:    23/08/01 02:03:51 GMT
FROM:    Sarah Dalessi at UAH <sd0104@uah.edu>

S. Dalessi (UAH) reports on behalf of the Fermi-GBM Team:

At the time of LVK S230731an, Fermi was passing through the South Atlantic Anomaly from 12.6 minutes prior to 5.7 minutes after the trigger time; therefore the GBM detectors were disabled.