GRB 190804C
GCN Circular 25264
Subject
GRB 190804C: Fermi GBM Final Real-time Localization
Date
2019-08-04T19:11:39Z (6 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 19:00:37 UT on 4 Aug 2019, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 190804C (trigger 586638042.518414 / 190804792).
The on-ground calculated location, using the Fermi GBM trigger data, is RA = 97.8, Dec = 42.3 (J2000 degrees, equivalent to J2000 06h 31m, 42d 17'), with a statistical uncertainty of 4.4 degrees.
The angle from the Fermi LAT boresight is 98.0 degrees.
The skymap can be found here:
http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2019/bn190804792/quicklook/glg_skymap_all_bn190804792.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/bn190804792/quicklook/glg_healpix_all_bn190804792.fit
The GBM light curve can be found here:
http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2019/bn190804792/quicklook/glg_lc_medres34_bn190804792.gif
GCN Circular 25265
Subject
GRB 190804C: BALROG localization (Fermi Trigger 586638042 / GRB 190804792)
Date
2019-08-04T19:22:56Z (6 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
586638042 at 19:00:37 on 04 Aug. 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) = 86.4+/-4.1 deg
Decl.(2000.0) = 46.0+/-2.1 deg
We estimate an additional systematic error of 1 deg.
Further details are available at:
https://grb.mpe.mpg.de/grb/GRB190804792/
The Healpix map can be downloaded from:
https://grb.mpe.mpg.de/grb/GRB190804792/healpix
The location parameters are available as JSON at:
https://grb.mpe.mpg.de/grb/GRB190804792/json