GRB 200503B
GCN Circular 27682
Subject
GRB 200503B: Fermi GBM Final Real-time Localization
Date
2020-05-03T17:28:56Z (5 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 17:18:33 UT on 3 May 2020, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 200503B (trigger 610219118.569706 / 200503721).
The on-ground calculated location, using the Fermi GBM trigger data, is RA = 250.6, Dec = -20.0 (J2000 degrees, equivalent to J2000 16h 42m, -20d 00'), with a statistical uncertainty of 4.1 degrees.
The angle from the Fermi LAT boresight is 73.0 degrees.
The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2020/bn200503721/quicklook/glg_skymap_all_bn200503721.png
The HEALPix FITS file, including the estimated localization systematic, can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2020/bn200503721/quicklook/glg_healpix_all_bn200503721.fit
The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2020/bn200503721/quicklook/glg_lc_medres34_bn200503721.gif
GCN Circular 27683
Subject
GRB 200503B: BALROG localization (Fermi Trigger 610219118 / GRB 200503721)
Date
2020-05-03T17:49:11Z (5 years ago)
From
Jochen Greiner at MPE,Garching <jcg@mpe.mpg.de>
B. Biltzinger, F. Kunzweiler, F. Berlato, J. Burgess & J. Greiner (all MPE Garching) report:
The public trigdat data of the Fermi Gamma-ray Burst Monitor (GBM) trigger
610219118 at 17:18:33 on 03 May 2020 were automatically fitted for spectrum
and sky location with BALROG (Burgess et al. 2018, MNRAS 476, 1427;
Berlato et al. 2019, ApJ 873, 60).
The best-fit position (1 sigma statistical errors) is:
RA(2000.0) = 248.5+/-2.7 deg
Decl.(2000.0) = -19.2+/-2.7 deg
We estimate an additional systematic error of 1 deg.
Further details are available at:
https://grb.mpe.mpg.de/grb/GRB200503721/
The Healpix map can be downloaded from:
https://grb.mpe.mpg.de/grb/GRB200503721/healpix
The location parameters are available as JSON at:
https://grb.mpe.mpg.de/grb/GRB200503721/json