TITLE: GCN CIRCULAR NUMBER: 26725 SUBJECT: LIGO/Virgo S200112r: not observable by Fermi-GBM DATE: 20/01/13 04:59:11 GMT FROM: Daniel Kocevski at GSFC D. Kocevski (NASA/MSFC) and J. Wood (NASA/MSFC) report on behalf of the Fermi-GBM Team and the GBM-LIGO/Virgo group At the time of S200112r, Fermi was passing through the South Atlantic Anomaly from 5 minutes prior to 23 minutes after the trigger time; therefore the GBM detectors were disabled.