GRB231205A

This page lists all entries on GRB231205A in GRBweb

Summary Fermi GBM IPN GCN 35263 GCN 35266 GCN 35268 GCN 35277 GCN 35304 GCN 35402

Summary table
Variable Value Source
GRB_name_Fermi GRB231205101
T0 2:25:11 UTC GCN_circulars,Fermi GBM final loc
ra 202.9375° IPN
decl 17.9333° IPN
pos_error 9.67e-01° IPN
T90 0.32 s Fermi_GBM
T90_error 0.143 s Fermi_GBM
T90_start 2:25:11.343 UTC Fermi_GBM
fluence 1.48e-06 erg/cm² Fermi_GBM
fluence_error 1.55e-08 erg/cm² Fermi_GBM
T100 0.663 s
GBM_located False
mjd 60283.10082175926 GCN_circulars,Fermi GBM final loc
Fermi GBM table
GRB_name_Fermi GRB231205101
trigger_name bn231205101
ra 206.0600°
decl 22.7500°
pos_error 4.12e+00°
datum 2023-12-05
t_trigger 2:25:11.407 UTC
T90 0.32 s
T90_error 0.143 s
T90_start 2:25:11.343 UTC
fluence 1.48e-06 erg/cm²
fluence_error 1.55e-08 erg/cm²
flux_1024 6.03e+00 erg/cm²/s
flux_1024_error 3.03e-01 erg/cm²/s
flux_1024_time -4.48e-01 erg/cm²/s
flux_64 3.21e+01 erg/cm²/s
flux_64_error 1.87e+00 erg/cm²/s
IPN table
GRB_name GRB231205A
ra 202.9375°
decl 17.9333°
pos_error 9.67e-01°
GCN 35263 table
GRB_name GRB231205A
GCN_number 35263
Detection_method Fermi GBM final loc
t_trigger 2:25:11 UTC
ra 206.1000°
decl 22.8000°
Circular_text TITLE: GCN CIRCULAR NUMBER: 35263 SUBJECT: GRB 231205A: Fermi GBM Final Real-time Localization DATE: 23/12/05 02:35:45 GMT FROM: Fermi GBM Team at MSFC/Fermi-GBM The Fermi GBM team reports the detection of a likely SHORT GRB At 02:25:11 UT on 5 Dec 2023, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 231205A (trigger 723435916.407408 / 231205101). The on-ground calculated location, using the Fermi GBM trigger data, is RA = 206.1, Dec = 22.8 (J2000 degrees, equivalent to J2000 13h 44m, 22d 48'), with a statistical uncertainty of 3.1 degrees. The angle from the Fermi LAT boresight is 79.0 degrees. The skymap can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn231205101/quicklook/glg_skymap_all_bn231205101.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/bn231205101/quicklook/glg_healpix_all_bn231205101.fit The GBM light curve can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn231205101/quicklook/glg_lc_medres34_bn231205101.gif
GCN 35266 table
GRB_name GRB231205A
GCN_number 35266
Detection_method Fermi GBM Other
Circular_text TITLE: GCN CIRCULAR NUMBER: 35266 SUBJECT: GRB 231205A: GECAM-B detection of a short burst DATE: 23/12/05 03:48:51 GMT FROM: tanwj@ihep.ac.cn GRB 231205A: GECAM-B detection of a short burst Wenjun Tan, Shaolin Xiong, report on behalf of the GECAM team: GECAM-B was triggered in-flight by a short burst, GRB 231205A at 2023-12-05T02:25:11.450 UTC(T0), which was also observed by Fermi/GBM (Fermi/GBM team, GCN 35263). According to the realtime alert data of GECAM-B, this burst consists of one bright short pulse followed by weaker emission with a total duration (T90) of about ~0.3 sec (30-1020 keV). Using the automatic on-ground localization pipeline with the realtime alert data, GECAM-B localized this burst to the following position (J2000): Ra: 202.8 deg Dec: 26.8 deg Err: 6.1 deg (1-sigma, statistical only) GECAM location is consistent with that of Fermi/GBM within the error. The time-averaged spectrum of GECAM-B realtime data from about T0-0.05 s to T0 could be adequately fit by a cut-off power-law with a fluence about 1.10E-6 erg/cm^2 in 20-1000 keV. We note that these results are based on realtime alert data and thus very preliminary. Gravitational wave high-energy Electromagnetic Counterpart All-sky Monitor (GECAM) mission originally consists of two microsatellites (GECAM-A and GECAM-B) launched in Dec. 2020. As the third member of GECAM constellation, GECAM-C was launched onboard SATech-01 experimental satellite in July 2022. GECAM mission is funded by the Chinese Academy of Sciences (CAS).
GCN 35268 table
GRB_name GRB231205A
GCN_number 35268
Detection_method Fermi GBM Other
Circular_text TITLE: GCN CIRCULAR NUMBER: 35268 SUBJECT: GRB 231205A: joint location of multiple instruments by ETJASMIN DATE: 23/12/05 16:33:30 GMT FROM: yqzhang_cl@163.com Yanting Zhang, Shaolin Xiong, Yue Huang, Shuo Xiao, Xiaoyun Zhao, Ping Wang, report on behalf of the GECAM team: The short burst, GRB 231205A, has been detected by GECAM-B (Tan et al., GCN 35266), Fermi/GBM (Fermi/GBM team, GCN 35263) and INTEGRAL/SPI-ACS. With the ETJASMIN pipeline (Energetic Transients joint analysis system for Multi-INstrument, Xiao et al., MNRAS, 514, 2397, 2022) and the realtime data of GECAM-B, INTEGRAL/SPI-ACS and Fermi/GBM, we did a low-latency joint location for this burst. Firstly, we applied the Li-CCF method (Xiao et al., ApJ, 920, 43, 2021) to the realtime high temporal resolution (~1 ms) light curve of GECAM-B and the low-latency public 50 ms light curve of INTEGRAL/SPI-ACS, and derived the triangulation location as the following annuli: -------------------------------------------------------------------------------------------------- Annulus Ra (deg) Dec (deg) Radius (deg) Radius-Error (deg, 3sigma) GECAM-B + SPI-ACS 209.519 59.889 40.961 1.272 -------------------------------------------------------------------------------------------------- Then, we combined this annulus location, the stand-alone locations provided by GECAM-B (Tan et al., GCN 35266) and Fermi/GBM (Fermi/GBM team, GCN 35263), as well as the Earth occultation of these instruments, and derived a refined location, which is much smaller than stand-alone ones. This refined location (~3 sigma region) could be approximately described by a polygon region, whose center and corners are: -------------------------------------- Ra (deg) Dec (deg) Center 205.313 19.155 Corner1 215.859 19.155 Corner2 209.883 18.724 Corner3 202.148 18.871 Corner4 194.766 20.427 Corner5 205.313 19.524 -------------------------------------- For this refined location, the sky map and probability data could be found at: Sky map: http://twiki.ihep.ac.cn/pub/GECAM/GRBList/GRB231205A-jointLoc-skymap-v01.png Data file: http://twiki.ihep.ac.cn/pub/GECAM/GRBList/GRB231205A-jointLoc-healpix-v01.fits ETJASMIN is developed for joint observation of high energy transients by the GECAM team. We acknowledge the public data of Fermi/GBM and INTEGRAL/SPI-ACS.
GCN 35277 table
GRB_name GRB231205A
GCN_number 35277
Detection_method Fermi GBM Other
ra 206.1000°
decl 22.8000°
Circular_text TITLE: GCN CIRCULAR NUMBER: 35277 SUBJECT: GRB 231205A: DDOTI Upper Limits on the Afterglow DATE: 23/12/06 01:21:44 GMT FROM: Kin O. C. L. Mendoza at Instituto de Astronoma, UNAM Océlotl Lopez (UNAM), Alan M. Watson (UNAM), Rosa L. Becerra (UNAM), Margarita Pereyra (UNAM), Nat Butler (ASU), Simone Dichiara (Penn state university), Diego Gonzalez (UNAM), William H. Lee (UNAM), Alexander Kutyrev (GSFC/UMD), Srihari Ravi (ASU) and Eleonora Troja (Tor Vergara Roma) report: We observed the field of the Fermi GBM GRB 231205A (Fermi GBM Team, GCN Circ. 35263) with the DDOTI wide-field imager at the Observatorio Astronómico Nacional on Sierra San Pedro Mártir ( http://ddoti.astroscu.unam.mx) from 2023-12-05 12:55:13 to 13:10:57 UTC (10.50 to 11.75 hours after the trigger). We observed a region of 7 degrees in RA by 7 degrees in declination centered on the Fermi GBM Final Position of RA = 206.1 and Dec = 22.8 (J2000 degrees). This region contains 1 instrumental field or about 49 square degrees. We obtained 13.6 minutes of exposure per instrumental field in the w filter. We obtained AB photometry by calibration against the APASS catalog. We detect no likely candidates for the afterglow to our 10-sigma upper limits of w = 18.89-19.41 (inter-quartile). We thank the staff of the Observatorio Astronómico Nacional on San Pedro Mártir.
GCN 35304 table
GRB_name GRB231205A
GCN_number 35304
Detection_method IPN Triangulation
t_trigger 2:25:11 UTC
ra 202.9360°
decl 17.9320°
Circular_text TITLE: GCN CIRCULAR NUMBER: 35304 SUBJECT: IPN triangulation of GRB 231205A DATE: 23/12/07 16:20:39 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. Ridnaia, A. Lysenko, and T. Cline on behalf of the Konus-Wind team, 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, S.-L. Xiong, Y. Huang, X.-Y. Zhao, and P. Wang on behalf of the GECAM 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 bright, short-duration GRB 231205A (Fermi-GBM detection: The Fermi GBM team, GCN Circ. 35263; GECAM-B detection: Tan et al., GCN Circ. 35266; ETJASMIN localization: Zhang et al., GCN Circ. 35268) has been detected by Fermi-GBM (trigger 723435916), Konus-Wind, INTEGRAL (SPI-ACS), GECAM-B (GRD), and Mars-Odyssey (HEND) so far, at about 8711 s UT (02:25:11). We have triangulated it to a preliminary, 3 sigma error box whose coordinates are: --------------------------------------------- RA(2000), deg Dec(2000), deg --------------------------------------------- Center: 202.936 (13h 31m 45s) +17.932 (+17d 55' 55") Corners: 203.258 (13h 33m 02s) +18.299 (+18d 17' 58") 202.683 (13h 30m 44s) +17.694 (+17d 41' 38") 202.612 (13h 30m 27s) +17.557 (+17d 33' 25") 203.188 (13h 32m 45s) +18.166 (+18d 09' 57") --------------------------------------------- The error box area is 119 sq. arcmin, and its maximum dimension is 58 arcmin (the minimum one is 2.4 arcmin). The Sun distance was 62 deg. This localization may be improved. The IPN localization is consistent with, but reduces the area of, the Fermi-GBM final localization and ETJASMIN localization. A triangulation map and HEALPix FITS file are posted at http://www.ioffe.ru/LEA/GRBs/GRB231205_T08710/IPN The Konus-Wind time history and spectrum will be given in a forthcoming GCN Circular.
GCN 35402 table
GRB_name GRB231205A
GCN_number 35402
Detection_method Fermi GBM Other
Circular_text TITLE: GCN CIRCULAR NUMBER: 35402 SUBJECT: GRID detection of GRB 231205A DATE: 23/12/19 12:34:43 GMT FROM: GRID Student Team at Tsinghua University Chenyu Wang, Zirui Yang, Longhao Li and Songyu Shen report on behalf of the GRID Collaboration: GRID-07 reports the detection of the short-duration GRB 231205A, which was also detected by Fermi/GBM and GECAM-B(GCN Circular 35263, 35266). The event was triggered with GRID on 2023-12-05 at 02:25:11.2 UTC. The measured burst duration (T90) in the 30-2000 keV range is approximately 0.4 ± 0.1 seconds. The GRID light curve of this event can be found at https://mirrors.tuna.tsinghua.edu.cn/GRID/data/GRID-GCN/GRB231205A/GRID_231205A_ltcv.pdf. GRID is a student-led project to monitor the transient gamma-ray sky with multiple detectors onboard different nanosatellites in the era of multi-messenger astronomy. For more information about GRID, please refer to the following references: https://doi.org/10.1007/s10686-019-09636-w and https://doi.org/10.1007/s10686-021-09819-4.