GRB200221A

This page lists all entries on GRB200221A in GRBweb

Summary Fermi GBM GCN 27159 GCN 27210

Summary table
Variable Value Source
GRB_name_Fermi GRB200221162
T0 3:52:58 UTC GCN_circulars,Fermi GBM final loc
ra 178.6820° GCN_circulars,IPN Triangulation
decl 33.4000° GCN_circulars,IPN Triangulation
T90 1.728 s Fermi_GBM
T90_error 1.336 s Fermi_GBM
T90_start 3:52:58.135 UTC Fermi_GBM
fluence 2.05e-07 erg/cm² Fermi_GBM
fluence_error 2.09e-08 erg/cm² Fermi_GBM
T100 1.863 s
GBM_located False
mjd 58900.161782407406 GCN_circulars,Fermi GBM final loc
Fermi GBM table
GRB_name_Fermi GRB200221162
trigger_name bn200221162
ra 157.1000°
decl 33.1400°
pos_error 6.45e+00°
datum 2020-02-21
t_trigger 3:52:58.711 UTC
T90 1.728 s
T90_error 1.336 s
T90_start 3:52:58.135 UTC
fluence 2.05e-07 erg/cm²
fluence_error 2.09e-08 erg/cm²
flux_1024 2.67e+00 erg/cm²/s
flux_1024_error 3.18e-01 erg/cm²/s
flux_1024_time -5.76e-01 erg/cm²/s
flux_64 3.66e+00 erg/cm²/s
flux_64_error 1.40e+00 erg/cm²/s
GCN 27159 table
GRB_name GRB200221A
GCN_number 27159
Detection_method Fermi GBM final loc
t_trigger 3:52:58 UTC
ra 157.1000°
decl 33.1000°
Circular_text TITLE: GCN CIRCULAR NUMBER: 27159 SUBJECT: GRB 200221A: Fermi GBM Final Real-time Localization DATE: 20/02/21 04:03:14 GMT FROM: Fermi GBM Team at MSFC/Fermi-GBM The Fermi GBM team reports the detection of a likely SHORT GRB At 03:52:58 UT on 21 Feb 2020, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 200221A (trigger 603949983.711252 / 200221162). The on-ground calculated location, using the Fermi GBM trigger data, is RA = 157.1, Dec = 33.1 (J2000 degrees, equivalent to J2000 10h 28m, 33d 06'), with a statistical uncertainty of 5.0 degrees. The angle from the Fermi LAT boresight is 122.0 degrees. The skymap can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2020/bn200221162/quicklook/glg_skymap_all_bn200221162.png The HEALPix FITS file, including the estimated localization systematic, can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2020/bn200221162/quicklook/glg_healpix_all_bn200221162.fit The GBM light curve can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2020/bn200221162/quicklook/glg_lc_medres34_bn200221162.gif
GCN 27210 table
GRB_name GRB200221A
GCN_number 27210
Detection_method IPN Triangulation
t_trigger 3:52:59 UTC
ra 178.6820°
decl 33.4000°
Circular_text TITLE: GCN CIRCULAR NUMBER: 27210 SUBJECT: IPN triangulation of GRB 200221A (short) DATE: 20/02/25 19:00:47 GMT FROM: Dmitry Svinkin at Ioffe Institute D. Svinkin, S. Golenetskii, R. Aptekar, D. Frederiks, A. Ridnaia, and T. Cline on behalf of the Konus-Wind team, K. Hurley, on behalf of the IPN, A. Goldstein, M. S. Briggs, and C. Wilson-Hodge on behalf of the Fermi GBM team, A. von Kienlin, X. Zhang, A. Rau, V. Savchenko, E. Bozzo, and C. Ferrigno, on behalf of the INTEGRAL SPI-ACS GRB team, and S. Xiao, C. K. Li, X. B. Li, Y. Huang, and S. L. Xiong on behalf of the Insight-HXMT GRB team, report: The short-duration GRB 200221A (The Fermi GBM team, GCN Circ. 27159) was detected by Fermi (GBM trigger 603949983), Konus-Wind, INTEGRAL (SPI-ACS), and Insight (HXMT/HE) at about 13979 s UT (03:52:59). We have triangulated it to a preliminary, 3 sigma error box whose coordinates are: -------------------------------- RA(2000), deg Dec(2000), deg -------------------------------- Center: 178.682 +33.400 Corners: 182.119 +35.008 132.491 +48.390 141.935 +43.606 175.374 +31.702 179.446 +3.183 183.926 -3.580 --------------------------------- The error box area is 455 sq. deg, and its maximum dimension is 68.5 deg (the minimum one is 6.5 deg). The Sun distance was ~140 deg. The IPN localization is consistent with, but reduces the area of, the Fermi-GBM one. This box may be improved. A triangulation map is posted at http://www.ioffe.ru/LEA/GRBs/GRB200221_T13983/IPN The Konus-Wind time history and spectrum will be given in a forthcoming GCN Circular.