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TITLE:   GCN CIRCULAR
NUMBER:  25264
SUBJECT: GRB 190804C: Fermi GBM Final Real-time Localization
DATE:    19/08/04 19:11:39 GMT
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

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TITLE:   GCN CIRCULAR
NUMBER:  25265
SUBJECT: GRB 190804C: BALROG localization (Fermi Trigger 586638042 / GRB 190804792)
DATE:    19/08/04 19:22:56 GMT
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