GRB 190727A
GCN Circular 25173
Subject
GRB 190727A: Fermi GBM Final Real-time Localization
Date
2019-07-27T16:13:30Z (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 16:01:52 UT on 27 Jul 2019, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 190727A (trigger 585936117.276574 / 190727668).
The on-ground calculated location, using the Fermi GBM trigger data, is RA = 224.5, Dec = 19.4 (J2000 degrees, equivalent to J2000 14h 58m, 19d 23'), with a statistical uncertainty of 1.0 degrees.
The angle from the Fermi LAT boresight is 20.0 degrees.
The skymap can be found here:
http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2019/bn190727668/quicklook/glg_skymap_all_bn190727668.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/bn190727668/quicklook/glg_healpix_all_bn190727668.fit
The GBM light curve can be found here:
http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2019/bn190727668/quicklook/glg_lc_medres34_bn190727668.gif
GCN Circular 25175
Subject
GRB 190727A: BALROG localization (Fermi Trigger 585936117 / GRB 190727668)
Date
2019-07-27T16:23:03Z (6 years ago)
From
Jochen Greiner at MPE,Garching <jcg@mpe.mpg.de>
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
585936117 at 16:01:52 on 27 July 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) = 232.3+/-2.0 deg
Decl.(2000.0) = 20.9+/-2.1 deg
We estimate an additional systematic error of 2 deg.
Further details are available at:
https://grb.mpe.mpg.de/grb/GRB190727668/
The Healpix map can be downloaded from:
https://grb.mpe.mpg.de/grb/GRB190727668/healpix
The location parameters are available as JSON at:
https://grb.mpe.mpg.de/grb/GRB190727668/json