//////////////////////////////////////////////////////////////////////// TITLE: GCN CIRCULAR NUMBER: 24691 SUBJECT: GRB 190531A: Fermi GBM Final Real-time Localization DATE: 19/05/31 07:40:41 GMT FROM: Fermi GBM Team at MSFC/Fermi-GBM The Fermi GBM team reports the detection of a likely LONG GRB At 07:29:11 UT on 31 May 2019, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 190531A (trigger 580980556.825258 / 190531312). The on-ground calculated location, using the Fermi GBM trigger data, is RA = 21.1, Dec = 16.4 (J2000 degrees, equivalent to J2000 01h 24m, 16d 23'), with a statistical uncertainty of 2.2 degrees. The angle from the Fermi LAT boresight is 57.0 degrees. The skymap can be found here: http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2019/bn190531312/quicklook/glg_skymap_all_bn190531312.png The HEALPix FITS file, including the estimated localization systematic, can be found here: http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2019/bn190531312/quicklook/glg_healpix_all_bn190531312.fit The GBM light curve can be found here: http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2019/bn190531312/quicklook/glg_lc_medres34_bn190531312.gif //////////////////////////////////////////////////////////////////////// TITLE: GCN CIRCULAR NUMBER: 24696 SUBJECT: Fermi Trigger 581026217 / GRB 190531840 / GRB190531A: BALROG localization DATE: 19/05/31 20:44:35 GMT FROM: Jochen Greiner at MPE,Garching F. Kunzweiler, B. Biltzinger, F. Berlato, J. Burgess & J. Greiner (all MPE Garching) report: The public trigdat data of the Fermi Gamma-ray Burst Monitor (GBM) trigger 581026217 at 20:10:12 on 31 May 2019 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) = 27.9+/-0.8 deg Decl.(2000.0) = -40.8+/-0.6 deg We estimate an additional systematic error of 2 deg. Further details are available at: https://grb.mpe.mpg.de/grb/GRB190531840/ The Healpix map can be downloaded from: https://grb.mpe.mpg.de/grb/GRB190531840/healpix The location parameters are available as JSON at: https://grb.mpe.mpg.de/grb/GRB190531840/json