GCN Circular 32160
Subject
Fermi-GBM will trial new SAA regions from Tuesday June 7th
Date
2022-06-03T21:40:48Z (2 years ago)
From
Oliver J Roberts at USRA/NASA <oliver.roberts@nasa.gov>
O.J. Roberts (USRA) and C. Fletcher (USRA) report
on behalf of the Fermi GBM Team:
From Tuesday June 7th 2022, Fermi-GBM will be investigating
alternative reductions in its definition of the South Atlantic
Anomaly (SAA) region in order to improve its operational
efficiency. This re-evaluation is due to the evolution of the SAA
region over the mission lifetime. We anticipate the increase in
GBM���s operational efficiency to be of the order of several
percent depending on which region is finally chosen, which will
be beneficial for future follow-up to multi-wavelength events
of interest and during scheduled observational campaigns.
During these investigations, observers within the community may
notice a number of spurious triggers by the spacecraft while
transiting the trialed regions. We anticipate our tests to last a
couple of weeks and we will send out a statement informing the
community when the tests have concluded. Alerts for any
misclassified events will be addressed promptly by Fermi-GBM
burst advocates via GCN circulars, in order to best advise the
community on how to follow up each event during this time.
We thank you for your patience and understanding.