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This page lists all entries on GRB221202B in GRBweb

Summary Fermi GBM GCN 33006 GCN 33019

Summary table
Variable	Value	Source
GRB_name_Fermi	GRB221202904
T0	21:41:52 UTC	GCN_circulars,Fermi GBM final loc
ra	346.3900°	Fermi_GBM
decl	-3.1400°	Fermi_GBM
pos_error	2.69e+00°	Fermi_GBM
T90	26.113 s	Fermi_GBM
T90_error	1.379 s	Fermi_GBM
T90_start	21:41:54.629 UTC	Fermi_GBM
fluence	1.59e-05 erg/cm²	Fermi_GBM
fluence_error	8.30e-08 erg/cm²	Fermi_GBM
T100	28.742 s
GBM_located	True
mjd	59915.904074074075	GCN_circulars,Fermi GBM final loc

Fermi GBM table
GRB_name_Fermi	GRB221202904
trigger_name	bn221202904
ra	346.3900°
decl	-3.1400°
pos_error	2.69e+00°
datum	2022-12-02
t_trigger	21:41:52.069 UTC
T90	26.113 s
T90_error	1.379 s
T90_start	21:41:54.629 UTC
fluence	1.59e-05 erg/cm²
fluence_error	8.30e-08 erg/cm²
flux_1024	6.92e+00 erg/cm²/s
flux_1024_error	2.71e-01 erg/cm²/s
flux_1024_time	1.19e+01 erg/cm²/s
flux_64	8.71e+00 erg/cm²/s
flux_64_error	1.18e+00 erg/cm²/s

GCN 33006 table
GRB_name	GRB221202B
GCN_number	33006
Detection_method	Fermi GBM final loc
t_trigger	21:41:52 UTC
ra	346.4000°
decl	-3.1000°
Circular_text	TITLE: GCN CIRCULAR NUMBER: 33006 SUBJECT: GRB 221202B: Fermi GBM Final Real-time Localization DATE: 22/12/02 21:52:14 GMT FROM: Fermi GBM Team at MSFC/Fermi-GBM The Fermi GBM team reports the detection of a likely LONG GRB At 21:41:52 UT on 2 Dec 2022, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 221202B (trigger 691710117.068684 / 221202904). The on-ground calculated location, using the Fermi GBM trigger data, is RA = 346.4, Dec = -3.1 (J2000 degrees, equivalent to J2000 23h 05m, -3d 06'), with a statistical uncertainty of 1.2 degrees. The angle from the Fermi LAT boresight is 82.0 degrees. The skymap can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2022/bn221202904/quicklook/glg_skymap_all_bn221202904.png The HEALPix FITS file, including the estimated localization systematic, can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2022/bn221202904/quicklook/glg_healpix_all_bn221202904.fit The GBM light curve can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2022/bn221202904/quicklook/glg_lc_medres34_bn221202904.gif

GCN 33019 table
GRB_name	GRB221202B
GCN_number	33019
Detection_method	Fermi GBM Det
t_trigger	21:41:58.660 UTC
Circular_text	TITLE: GCN CIRCULAR NUMBER: 33019 SUBJECT: GRB 221202B: Detection by VZLUSAT-2 DATE: 22/12/04 13:08:54 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. A long-duration GRB 221202B (Fermi/GBM detection: The Fermi GBM team, GCN Circ. 33006; Konus-Wind detection trigger time at 2022-12-02 21:41:58.66 UT; INTEGRAL/SPI-ACS detection peak at ~2022-12-02 21:42:00 UT) was marginally 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 marginal detection shows the peak time 2022-12-02 21:42:03 UTC. The T90 duration was measured to be 20 s with the light curve resolution of 1 s. The significance during T90 reaches 5.4 sigma. The light curve obtained by VZLUSAT-2 is available here: https://vzlusat2.konkoly.hu/static/share/GRB221202B_GCN_VZLUSAT2.pdf GRB detectors on VZLUSAT-2 are a demonstration payload for a future CubeSats constellation (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.