GRB221022C

This page lists all entries on GRB221022C in GRBweb

Summary Fermi GBM GCN 32857 GCN 32901

Summary table
Variable Value Source
GRB_name_Fermi GRB221022612
T0 14:41:43.608 UTC GCN_circulars,Konus-Wind Det
ra 231.3820° GCN_circulars,IPN Triangulation
decl -57.9380° GCN_circulars,IPN Triangulation
T90 0.256 s Fermi_GBM
T90_error 0.306 s Fermi_GBM
T90_start 14:41:46.397 UTC Fermi_GBM
fluence 7.94e-07 erg/cm² Fermi_GBM
fluence_error 2.26e-08 erg/cm² Fermi_GBM
T100 3.045 s
GBM_located False
mjd 59874.61231027778 GCN_circulars,Konus-Wind Det
Fermi GBM table
GRB_name_Fermi GRB221022612
trigger_name bn221022612
ra 231.5800°
decl -53.5500°
pos_error 5.56e+00°
datum 2022-10-22
t_trigger 14:41:46.429 UTC
T90 0.256 s
T90_error 0.306 s
T90_start 14:41:46.397 UTC
fluence 7.94e-07 erg/cm²
fluence_error 2.26e-08 erg/cm²
flux_1024 2.42e+00 erg/cm²/s
flux_1024_error 2.25e-01 erg/cm²/s
flux_1024_time -5.12e-01 erg/cm²/s
flux_64 2.20e+01 erg/cm²/s
flux_64_error 1.46e+00 erg/cm²/s
GCN 32857 table
GRB_name GRB221022C
GCN_number 32857
Detection_method IPN Triangulation
t_trigger 14:41:46 UTC
ra 231.3820°
decl -57.9380°
Circular_text TITLE: GCN CIRCULAR NUMBER: 32857 SUBJECT: IPN triangulation of GRB 221022C (short) DATE: 22/10/26 17:33:29 GMT FROM: Dmitry Svinkin at Ioffe Institute 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, and S. Barthelmy, J. Cummings, H. Krimm, D. Palmer, and A. Tohuvavohu on behalf of the Swift-BAT team, report: The short-duration GRB 221022C (Fermi-GBM detection: Poolakkil and Meegan, GCN Circ. 32836) was detected by Fermi (GBM trigger 688142511), INTEGRAL (SPI-ACS), Konus-Wind, and Swift (BAT) at about 52906 s UT (14:41:46). The burst was outside the coded field of view of the BAT. We have triangulated it to two preliminary, 3 sigma error boxes whose coordinates are: Box 1: --------------------------------------------- RA(2000), deg Dec(2000), deg --------------------------------------------- Center: 231.382 (15h 25m 32s) -57.938 (-57d 56' 16") Corners: 234.870 (15h 39m 29s) -56.438 (-56d 26' 17") 235.716 (15h 42m 52s) -56.321 (-56d 19' 17") 226.200 (15h 04m 48s) -59.592 (-59d 35' 33") 224.388 (14h 57m 33s) -59.790 (-59d 47' 25") --------------------------------------------- Box 2: --------------------------------------------- RA(2000), deg Dec(2000), deg --------------------------------------------- Center: 193.697 (12h 54m 47s) -60.774 (-60d 46' 28") Corners: 189.204 (12h 36m 49s) -59.842 (-59d 50' 33") 188.243 (12h 32m 58s) -59.852 (-59d 51' 09") 200.024 (13h 20m 06s) -61.584 (-61d 35' 03") 201.980 (13h 27m 55s) -61.500 (-61d 29' 58") --------------------------------------------- The error box area is 1.28 sq. deg, and their maximum dimension is 6.91 deg (the minimum one is 12.4 arcmin). The Sun distance was 50 deg. This localization may be improved. The IPN localization is consistent with, but reduces the area of, the Fermi-GBM final localization (glg_healpix_all_bn221022612_v00). A triangulation map and HEALPix FITS file are posted at http://www.ioffe.ru/LEA/GRBs/GRB221022_T52903/IPN The Konus-Wind time history and spectrum will be given in a forthcoming GCN Circular.
GCN 32901 table
GRB_name GRB221022C
GCN_number 32901
Detection_method Konus-Wind Det
t_trigger 14:41:43.608 UTC
Circular_text TITLE: GCN CIRCULAR NUMBER: 32901 SUBJECT: Konus-Wind detection of GRB 221022C DATE: 22/10/31 14:54:50 GMT FROM: Anna Ridnaia at Ioffe Institute A.Ridnaia, D. Frederiks, A.Lysenko, D. Svinkin, A. Tsvetkova, M. Ulanov, and T. Cline, on behalf of the Konus-Wind team, report: The short-duration GRB 221022C (IPN triangulation: Svinkin et al., GCN Circ. 32857) triggered Konus-Wind at T0=52903.608 s UT (14:41:43.608). The burst light curve shows a multipeaked structure, which starts at T0-88 ms and has a total duration of ~128 ms. The Konus-Wind light curve of this GRB is available at http://www.ioffe.ru/LEA/GRBs/GRB221022_T52903/ As observed by Konus-Wind, the burst had a fluence of 8.55(-1.23,+1.68)x10^-7 erg/cm2, and a 16-ms peak flux, measured from T0-0.012 s, of 2.01(-0.39,+0.47)x10^-5 erg/cm2/s (both in the 20 keV - 10 MeV energy range). Since the main fraction of the burst emission was detected before the trigger, the spectral analysis was performed using the KW 3-channel light curve data. Modelling the KW 3-channel time-integrated spectrum (measured from T0-0.088 s to T0+0.040 s) by a power law with exponential cutoff model: dN/dE ~ (E^alpha)*exp(-E*(2+alpha)/Ep), yields alpha = -0.09(-0.28,+0.40) and Ep = 548(-86,+121) keV. All the quoted errors are at the 68% confidence level. All the quoted values are preliminary.