GRB 230119A
GCN Circular 33197
Subject
GRB 230119A: Fermi GBM Final Real-time Localization
Date
2023-01-19T13:34:04Z (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 LONG GRB
At 13:23:36 UT on 19 Jan 2023, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 230119A (trigger 695827421.318578 / 230119558).
The on-ground calculated location, using the Fermi GBM trigger data, is RA = 332.4, Dec = -20.1 (J2000 degrees, equivalent to J2000 22h 09m, -20d 06'), with a statistical uncertainty of 3.1 degrees.
The angle from the Fermi LAT boresight is 90.0 degrees.
The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn230119558/quicklook/glg_skymap_all_bn230119558.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/bn230119558/quicklook/glg_healpix_all_bn230119558.fit
The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn230119558/quicklook/glg_lc_medres34_bn230119558.gif
GCN Circular 33199
Subject
GRB 230119A: CALET Gamma-Ray Burst Monitor detection
Date
2023-01-20T12:20:10Z (2 years ago)
From
Yuta Kawakubo at Louisiana State U./CALET <kawakubo1@lsu.edu>
S. Nakahira (RIKEN), A. Yoshida, T. Sakamoto, S. Sugita (AGU),
Y. Kawakubo (LSU), K. Yamaoka (Nagoya U), Y. Asaoka (ICRR),
S. Torii, Y. Akaike, K. Kobayashi (Waseda U), Y. Shimizu,
T. Tamura (Kanagawa U), N. Cannady (GSFC/UMBC),
M. L. Cherry (LSU), S. Ricciarini (U of Florence),
P. S. Marrocchesi (U of Siena),
and the CALET collaboration:
The long GRB 230119A (Fermi GBM Final Real-time Localization:
Fermi GBM team, GCN Circ. 33197) triggered the CALET
Gamma-ray Burst Monitor (CGBM) at 13:23:33.64 UTC on 19 Jan 2023
(http://cgbm.calet.jp/cgbm_trigger/flight/1358169750/).
The burst signal was seen by all CGBM detectors.
The burst light curve shows a multi-peaked structure that starts
at T-0.4 sec, peaks at T+3.0 sec, and ends at T+91.0 sec.
The T90 and T50 durations measured by the SGM data are 79.6 +/- 4.6 sec
and 45.4 +/- 1.2 sec (40-1000 keV), respectively.
The ground-processed light curve is available at
http://cgbm.calet.jp/cgbm_trigger/ground/1358169750/index.html
The CALET data used in this analysis are provided by
the Waseda CALET Operation Center located at Waseda University.