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TITLE:   GCN CIRCULAR
NUMBER:  33168
SUBJECT: GRB 230114A: Fermi GBM Final Real-time Localization
DATE:    23/01/14 17:09:30 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 16:59:13 UT on 14 Jan 2023, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 230114A (trigger 695408358.896514 / 230114708).

The on-ground calculated location, using the Fermi GBM trigger data, is RA = 236.3, Dec = 3.9 (J2000 degrees, equivalent to J2000 15h 45m, 3d 53'), with a statistical uncertainty of 2.5 degrees.

The angle from the Fermi LAT boresight is 80.0 degrees.

The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn230114708/quicklook/glg_skymap_all_bn230114708.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/bn230114708/quicklook/glg_healpix_all_bn230114708.fit

The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn230114708/quicklook/glg_lc_medres34_bn230114708.gif

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TITLE:   GCN CIRCULAR
NUMBER:  33170
SUBJECT: GRB 230114A: Detection by VZLUSAT-2
DATE:    23/01/14 22:02:01 GMT
FROM:    Jakub Ripa at Masaryk University  <245487@mail.muni.cz>

J. Ripa (Masaryk U.), A. Pal (Konkoly Observatory),  N. Werner (Masaryk 
U.), M. Ohno (Hiroshima U.),  L. Meszaros, B. Csak (Konkoly 
Observatory), H. Takahashi (Hiroshima U.), F. Munz , M. Topinka, F. 
Hroch, M. Dafcikova, N. Husarikova, J.-P. Breuer (Masaryk U.), J. Hudec, 
J. Kapus, M. Frajt, M. Rezenov (Spacemanic s.r.o), R. Laszlo 
(Needronix), G. Galgoczi (Wigner Research Center/Eotvos U.), N. Uchida 
(ISAS/JAXA), T. Enoto (Kyoto U.), Zs. Frei (Eotvos U.), Y. Fukazawa, K. 
Hirose, H. Matake (Hiroshima U.), S. Hisadomi (Nagoya U.), Y. Ichinohe 
(Rikkyo U.), L. L. Kiss (Konkoly Observatory),  T. Mizuno (Hiroshima 
U.), K. Nakazawa (Nagoya U.), H. Odaka (Univ of Tokyo), K. Torigoe 
(Hiroshima U.), P. Svoboda, V. Daniel, J. Dudas, M. Junas, J. Gromes 
(VZLU), I. Vertat (FEL ZCU)  -- the VZLUSAT-2/GRB payload collaboration.

The long-duration GRB 230114A (Fermi/GBM detection: The Fermi GBM team, 
GCN Circ. 33168; INTEGRAL/SPI-ACS detection peak at 2023-01-14 ~16:59:14 
UT) was detected by the GRB detector on board of the VZLUSAT-2 3U 
CubeSat (https://www.vzlusat2.cz/en/).

The data acquisition was performed by GRB detector unit no. 1 and the 
detection was confirmed at the peak time 2023-01-14 16:59:17 UTC. The 
T90 duration was measured to be 5 s with the light curve resolution of 1 
s. The significance during T90 reaches 6.7 sigma.

The light curve obtained by VZLUSAT-2 is available here:
https://vzlusat2.konkoly.hu/static/share/GRB230114A_GCN_VZLUSAT2.pdf

All VZLUSAT-2 detections are listed at: 
https://monoceros.physics.muni.cz/hea/VZLUSAT-2/
The GRB detectors on VZLUSAT-2 are a demonstration payload for a future 
constellation of CubeSats (Werner et al. Proc. SPIE 2018). Two GRB 
modules of VZLUSAT-2 are placed in a perpendicular manner and each 
consists of a 75 x 75 x 5 mm3 CsI scintillator read out by a SiPM array, 
covering the energy range from ~30 keV to ~1000 keV. VZLUSAT-2 was 
launched on 2022 January 13 from Cape Canaveral.