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GCN Circular 29919

Subject
GRB 210501A: Fermi GBM Final Real-time Localization
Date
2021-05-01T05:05:20Z (3 years ago)
From
Fermi GBM Team at MSFC/Fermi-GBM <do_not_reply@GIOC.nsstc.nasa.gov>
The Fermi GBM team reports the detection of a likely LONG GRB

At 04:55:00 UT on 1 May 2021, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 210501A (trigger 641537705.291634 / 210501205).

The on-ground calculated location, using the Fermi GBM trigger data, is RA = 357.8, Dec = -71.3 (J2000 degrees, equivalent to J2000 23h 51m, -71d 17'), with a statistical uncertainty of 11.7 degrees.

The angle from the Fermi LAT boresight is 49.0 degrees.

The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2021/bn210501205/quicklook/glg_skymap_all_bn210501205.png

The HEALPix FITS file, including the estimated localization systematic, can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2021/bn210501205/quicklook/glg_healpix_all_bn210501205.fit

The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2021/bn210501205/quicklook/glg_lc_medres34_bn210501205.gif
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