GRB 190827A
GCN Circular 25489
Subject
GRB 190827A: Fermi GBM Final Real-time Localization
Date
2019-08-27T11:23:01Z (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 11:12:48 UT on 27 Aug 2019, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 190827A (trigger 588597173.546288 / 190827467).
The on-ground calculated location, using the Fermi GBM trigger data, is RA = 175.8, Dec = 46.5 (J2000 degrees, equivalent to J2000 11h 43m, 46d 30'), with a statistical uncertainty of 1.0 degrees.
The angle from the Fermi LAT boresight is 6.0 degrees.
The skymap can be found here:
http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2019/bn190827467/quicklook/glg_skymap_all_bn190827467.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/bn190827467/quicklook/glg_healpix_all_bn190827467.fit
The GBM light curve can be found here:
http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2019/bn190827467/quicklook/glg_lc_medres34_bn190827467.gif
GCN Circular 25490
Subject
GRB 190827A: BALROG localization (Fermi Trigger 588597173 / GRB 190827467)
Date
2019-08-27T11:36:00Z (6 years ago)
From
Jochen Greiner at MPE,Garching <jcg@mpe.mpg.de>
J. Burgess , B. Biltzinger, F. Kunzweiler, F. Berlato, & J. Greiner (all MPE Garching) report:
The public trigdat data of the Fermi Gamma-ray Burst Monitor (GBM) trigger
588597173 at 11:12:48 on 27 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) = 175.8+/-0.9 deg
Decl.(2000.0) = 41.5+/-1.1 deg
We estimate an additional systematic error of 1 deg.
Further details are available at:
https://grb.mpe.mpg.de/grb/GRB190827467/
The Healpix map can be downloaded from:
https://grb.mpe.mpg.de/grb/GRB190827467/healpix
The location parameters are available as JSON at:
https://grb.mpe.mpg.de/grb/GRB190827467/json