GRB250107D

This page lists all entries on GRB250107D in GRBweb

Summary IPN GCN 38880 GCN 38881 GCN 38897 GCN 38919

Summary table
Variable Value Source
T0 5:23:26 UTC GCN_circulars,IPN Triangulation
ra 259.3000° IPN
decl -29.7167° IPN
pos_error 2.60e+00° IPN
GBM_located False
mjd 60682.22460648148 GCN_circulars,IPN Triangulation
IPN table
GRB_name GRB250107D
ra 259.3000°
decl -29.7167°
pos_error 2.60e+00°
GCN 38880 table
GRB_name GRB250107D
GCN_number 38880
Detection_method IPN Triangulation
t_trigger 5:23:26 UTC
ra 259.3000°
decl -29.7100°
Circular_text TITLE: GCN CIRCULAR NUMBER: 38880 SUBJECT: IPN triangulation of GRB 250107D (short/hard) DATE: 25/01/09 22:06:45 GMT FROM: Dmitry Svinkin at Ioffe Institute A.S. Kozyrev, D.V. Golovin, M.L. Litvak, I.G. Mitrofanov, and A.B. Sanin on behalf of the HEND/Mars Odyssey team, D. Svinkin, D. Frederiks, A. Lysenko, A. Ridnaia, and T. Cline on behalf of the Konus-Wind team, E. Burns on behalf of the IPN, E. Bozzo and C. Ferrigno, on behalf of the INTEGRAL SPI-ACS GRB team, S. Barthelmy, J. Cummings, H. Krimm, D. Palmer, and A. Tohuvavohu on behalf of the Swift-BAT team, and W. Boynton, C. Fellows, K. Harshman, H. Enos, R. Starr, and A.S. Gardner on on behalf of the GRS-Odyssey GRB team, report: The short-duration GRB 250107D was detected by Konus-Wind, INTEGRAL (SPI-ACS), Swift (BAT), and Mars-Odyssey(HEND), at about 19406 s UT (05:23:26). The burst was outside the coded field of view of the BAT. We have triangulated it to a preliminary, 3 sigma error box whose coordinates are: --------------------------------------------- RA(2000), deg Dec(2000), deg --------------------------------------------- Center: 259.300 (17h 17m 12s) -29.710 (-29d 42' 37") Corners: 259.267 (17h 17m 04s) -28.346 (-28d 20' 46") 259.147 (17h 16m 35s) -30.541 (-30d 32' 29") 259.382 (17h 17m 32s) -30.988 (-30d 59' 15") 259.469 (17h 17m 52s) -28.855 (-28d 51' 18") --------------------------------------------- The error box area is 1635 sq. arcmin, and its maximum dimension is 2.6 deg (the minimum one is 12.6 arcmin). The Sun distance was 27 deg. This localization may be improved. A triangulation map and HEALPix FITS file are posted at http://www.ioffe.ru/LEA/GRBs/GRB250107_T19411/IPN/ The HEALPix triangulation map is the multi-order HEALPix in units of probability density. The Konus-Wind time history and spectrum will be given in a forthcoming GCN Circular.
GCN 38881 table
GRB_name GRB250107D
GCN_number 38881
Detection_method Konus-Wind Det
t_trigger 5:23:31.897 UTC
Circular_text TITLE: GCN CIRCULAR NUMBER: 38881 SUBJECT: Konus-Wind detection of GRB 250107D (short/hard) DATE: 25/01/09 22:08:34 GMT FROM: Dmitry Frederiks at Ioffe Institute D. Frederiks, A.Lysenko, A. Ridnaia, D. Svinkin, A. Tsvetkova, M. Ulanov, and T. Cline, on behalf of the Konus-Wind team, report: The short GRB 250107D (IPN triangulation: Kozyrev et al., GCN 38880) triggered Konus-Wind (KW) at T0=19411.897 s UT (05:23:31.897). The burst light curve shows a single, multi-peaked emission pulse which starts at ~T0-0.112 s and has a duration of ~0.208 s. The Konus-Wind light curve of this GRB is available at http://www.ioffe.ru/LEA/GRBs/GRB250107_T19411/ As observed by Konus-Wind, the burst had the total fluence of 2.06(-0.34,+0.62)x10^-6 erg/cm^2 and a 16-ms peak energy flux, measured from T0-0.064 s, of 1.99(-0.32,+0.59)x10^-5 erg/cm^2/s (both in the 20 keV - 10 MeV energy range). Since a major part of the burst emission was detected before the trigger time, the time-averaged spectral analysis was performed using the KW 3-channel light curve data. Modeling the 3-channel time-integrated spectrum (measured from T0-0.112 s to T0+0.096 s) by a power law with exponential cutoff (CPL) model dN/dE ~ (E^alpha)*exp(-E*(2+alpha)/Ep) yields alpha = -0.40 (-0.32, + 0.41) and Ep = 897(-203,+453) keV. All the quoted errors are estimated at the 68% confidence level. All the presented results are preliminary.
GCN 38897 table
GRB_name GRB250107D
GCN_number 38897
Detection_method CALET
Circular_text TITLE: GCN CIRCULAR NUMBER: 38897 SUBJECT: GRB 250107D: CALET Gamma-Ray Burst Monitor detection DATE: 25/01/10 17:22:49 GMT FROM: Yuta Kawakubo at Aoyama Gakuin University T. Sakamoto, A. Yoshida, S. Sugita, Y. Kawakubo (AGU), K. Yamaoka (Nagoya U), S. Nakahira (JAXA), 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 short GRB 250107D (IPN triangulation: Kozyrev et al., GCN Circ. 38880; Konus-Wind detection: Frederiks et al., GCN Circ. 38881) triggered the CALET Gamma-ray Burst Monitor (CGBM) at 05:23:36.72 UTC on 7 January 2025 (https://cgbm.calet.jp/cgbm_trigger/flight/1420262534/index.html). The burst signal was seen by only the SGM detector. Because of a problem with the ground alert processing script, the GCN notice was not distributed automatically for this event. The burst light curve shows a single pulse that starts at T+0.17 sec, peaks at T+0.25 sec, and ends at T+0.32 sec. The T90 and T50 durations measured by the SGM data are 0.13 +/- 0.03 sec and 0.08 +/- 0.02 sec (40-1000 keV), respectively. The ground-processed light curve is available at https://cgbm.calet.jp/cgbm_trigger/ground/1420262534/ The CALET data used in this analysis are provided by the Waseda CALET Operation Center located at Waseda University.
GCN 38919 table
GRB_name GRB250107D
GCN_number 38919
Detection_method CALET
Circular_text TITLE: GCN CIRCULAR NUMBER: 38919 SUBJECT: GRB 250107D: GRBAlpha detection DATE: 25/01/13 11:53:21 GMT FROM: Andras Pal at Konkoly Observatory A. Pal (Konkoly Observatory), M. Dafcikova, J. Ripa, M. Kolar, N. Werner (Masaryk U.), M. Ohno, H. Takahashi (Hiroshima U.), L. Meszaros, B. Csak (Konkoly Observatory), N. Husarikova, F. Munz , M. Topinka, M. Duriskova, L. Szakszonova, J.-P. Breuer, F. Hroch (Masaryk U.), T. Urbanec, M. Kasal, A. Povalac (Brno U. of Technology), J. Hudec, J. Kapus, M. Frajt (Spacemanic s.r.o), R. Laszlo, M. Koleda (Needronix s.r.o), M. Smelko, P. Hanak, P. Lipovsky (Technical U. of Kosice), G. Galgoczi (Wigner Research Center/Eotvos U.), Y. Uchida, H. Poon, H. Matake (Hiroshima U.), N. Uchida (ISAS/JAXA), T. Bozoki (Eotvos U.), G. Dalya (Eotvos U.), T. Enoto (Kyoto U.), Zs. Frei (Eotvos U.), G. Friss (Eotvos U.), Y. Fukazawa, K. Hirose (Hiroshima U.), S. Hisadomi (Nagoya U.), Y. Ichinohe (Rikkyo U.), K. Kapas (Eotvos U.), L. L. Kiss (Konkoly Observatory), T. Mizuno (Hiroshima U.), K. Nakazawa (Nagoya U.), H. Odaka (Univ of Tokyo), J. Takatsy (Eotvos U.), K. Torigoe (Hiroshima U.), N. Kogiso, M. Yoneyama (Osaka Metropolitan U.), M. Moritaki (U. Tokyo), T. Kano (U. Michigan) -- the GRBAlpha collaboration. The long-duration GRB 250107D (IPN Triangulation: GCN 38880; Konus/Wind detection: GCN 38881; CALET/CGBM detection: GCN 38897; INTEGRAL/SPI-ACS peak detection at 2025-01-07 ~05:23:36 UTC) was observed by the GRBAlpha 1U CubeSat (Pal et al. 2023, A&A, 677, 40; https://ui.adsabs.harvard.edu/abs/2023A%26A...677A..40P/abstract). The detection was confirmed at the peak time 2025-01-07 05:23:36.7 UTC. The T90 duration measured by GRBAlpha is 0.5 s and the overall significance during T90 reaches 6.6 sigma in the ~120-400 keV band. The light curve obtained by GRBAlpha is available here: https://grbalpha.konkoly.hu/static/share/GRB250107D_GCN.pdf All GRBAlpha detections are listed at: https://monoceros.physics.muni.cz/hea/GRBAlpha/ GRBAlpha, launched on 2021 March 22, is a demonstration mission for a future CubeSat constellation (Werner et al. Proc. SPIE 2018). The detector of GRBAlpha consists of a 75 x 75 x 5 mm3 CsI scintillator read out by a SiPM array, covering the energy range from ~50 keV to ~1000 keV. To increase the duty cycle and the downlink rate, the upgrade of the on-board data acquisition software stack is in progress. The ground segment is also supported by the radio amateur community and it takes advantage of the SatNOGS network for increased data downlink volume.