//////////////////////////////////////////////////////////////////////// TITLE: GCN CIRCULAR NUMBER: 26157 SUBJECT: GRB 191104C: Fermi GBM Final Real-time Localization DATE: 19/11/04 10:54:49 GMT FROM: Fermi GBM Team at MSFC/Fermi-GBM The Fermi GBM team reports the detection of a likely SHORT GRB At 10:44:26 UT on 4 Nov 2019, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 191104C (trigger 594557071.308326 / 191104448). The on-ground calculated location, using the Fermi GBM trigger data, is RA = 289.4, Dec = 22.7 (J2000 degrees, equivalent to J2000 19h 17m, 22d 41'), with a statistical uncertainty of 2.5 degrees. The angle from the Fermi LAT boresight is 53.0 degrees. The skymap can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2019/bn191104448/quicklook/glg_skymap_all_bn191104448.png The HEALPix FITS file, including the estimated localization systematic, can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2019/bn191104448/quicklook/glg_healpix_all_bn191104448.fit The GBM light curve can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2019/bn191104448/quicklook/glg_lc_medres34_bn191104448.gif //////////////////////////////////////////////////////////////////////// TITLE: GCN CIRCULAR NUMBER: 26158 SUBJECT: GRB 191104C: BALROG localization (Fermi Trigger 594557071 / GRB 191104448) DATE: 19/11/04 11:08:06 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 594557071 at 10:44:26 on 04 Nov. 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) = 291.3+/-0.8 deg Decl.(2000.0) = 23.7+/-0.6 deg We estimate an additional systematic error of 2 deg. Further details are available at: https://grb.mpe.mpg.de/grb/GRB191104448/ The Healpix map can be downloaded from: https://grb.mpe.mpg.de/grb/GRB191104448/healpix The location parameters are available as JSON at: https://grb.mpe.mpg.de/grb/GRB191104448/json //////////////////////////////////////////////////////////////////////// TITLE: GCN CIRCULAR NUMBER: 26165 SUBJECT: GRB 191104C: Fermi GBM Final Real-time Localization DATE: 19/11/04 20:40:02 GMT FROM: Fermi GBM Team at MSFC/Fermi-GBM The Fermi GBM team reports the detection of a likely SHORT GRB At 20:29:39 UT on 4 Nov 2019, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 191104C (trigger 594592184.818686 / 191104854). The on-ground calculated location, using the Fermi GBM trigger data, is RA = 288.4, Dec = 26.9 (J2000 degrees, equivalent to J2000 19h 13m, 26d 53'), with a statistical uncertainty of 14.7 degrees. The angle from the Fermi LAT boresight is 72.0 degrees. The skymap can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2019/bn191104854/quicklook/glg_skymap_all_bn191104854.png The HEALPix FITS file, including the estimated localization systematic, can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2019/bn191104854/quicklook/glg_healpix_all_bn191104854.fit The GBM light curve can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2019/bn191104854/quicklook/glg_lc_medres34_bn191104854.gif //////////////////////////////////////////////////////////////////////// TITLE: GCN CIRCULAR NUMBER: 26166 SUBJECT: Fermi GBM GRB 191104C (trigger 594592184 / 191104854) is not a GRB DATE: 19/11/04 21:37:06 GMT FROM: Bagrat Mailyan at UAH B. Mailyan (UAH) reports on behalf of the Fermi Gamma-ray Burst Monitor Team: “On 04 November 2019 at 20:29:39.82 UT the Fermi Gamma-ray Burst Monitor trigger 594592184 / 191104854 tentatively classified as a GRB (GRB 191104C in GCN #26165) is in fact not due to a GRB. This is a SGR-like burst from the direction of SGR 1935+2154."