GRB 230712A
GCN Circular 34204
Subject
GRB 230712A: Fermi GBM Final Real-time Localization
Date
2023-07-12T00:49:51Z (2 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 SHORT GRB
At 00:39:13 UT on 12 Jul 2023, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 230712A (trigger 710815158.21058 / 230712027).
The on-ground calculated location, using the Fermi GBM trigger data, is RA = 153.8, Dec = 28.5 (J2000 degrees, equivalent to J2000 10h 15m, 28d 30'), with a statistical uncertainty of 19.6 degrees.
The angle from the Fermi LAT boresight is 73.0 degrees.
The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn230712027/quicklook/glg_skymap_all_bn230712027.png
The HEALPix FITS file, including the estimated localization systematic, can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn230712027/quicklook/glg_healpix_all_bn230712027.fit
The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn230712027/quicklook/glg_lc_medres34_bn230712027.gif
GCN Circular 34222
Subject
IPN triangulation of GRB 230712A (short)
Date
2023-07-17T20:37:09Z (2 years ago)
From
Dmitry Svinkin at Ioffe Institute <svinkin@mail.ioffe.ru>
D. Svinkin, D. Frederiks, A. Ridnaia, A. Lysenko,
on behalf of the IPN,
A. Goldstein, M. S. Briggs, C. Wilson-Hodge,
and E. Burns on behalf of the Fermi GBM team,
E. Bozzo and C. Ferrigno, on behalf of the INTEGRAL SPI-ACS GRB team,
and
S. Barthelmy, J. Cummings, H. Krimm, D. Palmer, and A. Tohuvavohu
on behalf of the Swift-BAT team, report:
The short-duration GRB 230712A
(Fermi-GBM detection: The Fermi GBM team, GCN Circ. 34204)
was detected by Fermi (GBM trigger 710815158) and
INTEGRAL (SPI-ACS) at about 81618 s UT (22:40:18).
We have triangulated it to a GBM-SPI-ACS annulus centered at
RA(2000)=216.150 deg (14h 24m 36s) Dec(2000)=+43.693 deg (+43d 41' 34")
whose radius is 74.146 +/- 8.027 deg (3 sigma).
The annulus combined with the Fermi-GBM final position (GCN 34204;
glg_healpix_all_bn230712027_v00) gives 1125 sq. deg (3 sigma) localization region.
A triangulation map and HEALPix FITS file are posted at
http://www.ioffe.ru/LEA/GRBs/GRB230712_T02353/IPN