GRB200219B

This page lists all entries on GRB200219B in GRBweb

Summary Fermi GBM GCN 27127 GCN 27144 GCN 27167

Summary table
Variable Value Source
GRB_name_Fermi GRB200219413
T0 9:54:07.766 UTC Fermi_GBM
ra 305.3220° GCN_circulars,IPN Triangulation
decl 17.2020° GCN_circulars,IPN Triangulation
T90 9.984 s Fermi_GBM
T90_error 1.305 s Fermi_GBM
T90_start 9:54:07.766 UTC Fermi_GBM
fluence 2.82e-06 erg/cm² Fermi_GBM
fluence_error 3.46e-08 erg/cm² Fermi_GBM
T100 9.984 s
GBM_located False
mjd 58898.41258988426 Fermi_GBM
Fermi GBM table
GRB_name_Fermi GRB200219413
trigger_name bn200219413
ra 299.1300°
decl 6.6500°
pos_error 3.79e+00°
datum 2020-02-19
t_trigger 9:54:14.678 UTC
T90 9.984 s
T90_error 1.305 s
T90_start 9:54:07.766 UTC
fluence 2.82e-06 erg/cm²
fluence_error 3.46e-08 erg/cm²
flux_1024 5.01e+00 erg/cm²/s
flux_1024_error 2.44e-01 erg/cm²/s
flux_1024_time 7.68e-01 erg/cm²/s
flux_64 7.29e+00 erg/cm²/s
flux_64_error 9.97e-01 erg/cm²/s
GCN 27127 table
GRB_name GRB200219B
GCN_number 27127
Detection_method Fermi GBM final loc
t_trigger 9:54:14 UTC
ra 299.1000°
decl 6.7000°
Circular_text TITLE: GCN CIRCULAR NUMBER: 27127 SUBJECT: GRB 200219B: Fermi GBM Final Real-time Localization DATE: 20/02/19 10:04:32 GMT FROM: Fermi GBM Team at MSFC/Fermi-GBM The Fermi GBM team reports the detection of a likely LONG GRB At 09:54:14 UT on 19 Feb 2020, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 200219B (trigger 603798859.677708 / 200219413). The on-ground calculated location, using the Fermi GBM trigger data, is RA = 299.1, Dec = 6.7 (J2000 degrees, equivalent to J2000 19h 56m, 6d 42'), with a statistical uncertainty of 4.0 degrees. The angle from the Fermi LAT boresight is 46.0 degrees. The skymap can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2020/bn200219413/quicklook/glg_skymap_all_bn200219413.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/bn200219413/quicklook/glg_healpix_all_bn200219413.fit The GBM light curve can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2020/bn200219413/quicklook/glg_lc_medres34_bn200219413.gif
GCN 27144 table
GRB_name GRB200219B
GCN_number 27144
Detection_method Fermi GBM Other
Circular_text TITLE: GCN CIRCULAR NUMBER: 27144 SUBJECT: LIGO/Virgo S200219ac: Fermi GBM transient event not confidently associated with GW signal DATE: 20/02/19 21:57:24 GMT FROM: Rachel Hamburg at UAH R. Hamburg (UAH) reports on behalf of the Fermi-GBM Team: For S200219ac and using the initial BAYESTAR skymap, Fermi-GBM was observing 46.6% of the localization probability at event time; the southern lobe was Earth-occulted for GBM. There was a Fermi-GBM onboard trigger, GRB 200219B (GCN 27127), approximately 10 min after the LIGO/Virgo detection of the GW trigger (GCN 27130). However due to the temporal offset and spatial inconsistency, we do not consider these two events associated. An automated, blind search for short gamma-ray bursts below the onboard triggering threshold in Fermi-GBM also identified no counterpart candidates +/- 1 hour around the GW event time. The GBM targeted search, the most sensitive, coherent search for GRB-like signals, was run from +/-30 s around merger time for S200219ac. The targeted search identified a transient at approximately T0+11 s that is consistent with a short GRB origin and spatially consistent with the initial S200219ac localization map. The SNR of this event is 5.6, and the False Alarm Rate for signals of this significance in GBM data is 3.0E-4 Hz. However, due to the weak nature of the event, the rate of events of similar significance in GBM, and the presence of multiple galactic transient signals around the time of interest, we are not confident in an association. For the interested observer, the GBM localization HEALPix file can be found on the Gravitational Wave Treasure Map (Wyatt et al. 2020, arXiv:2001.00588) at: http://treasuremap.space/static/S200219ac_GBM_Event1_healpix.fit. The skymap image can be found at: http://treasuremap.space/static/S200219ac_GBM_Event1_skymap.png.
GCN 27167 table
GRB_name GRB200219B
GCN_number 27167
Detection_method IPN Triangulation
t_trigger 9:54:12 UTC
ra 305.3220°
decl 17.2020°
Circular_text TITLE: GCN CIRCULAR NUMBER: 27167 SUBJECT: IPN triangulation of GRB 200219B (inconsistent with the LIGO/Virgo S200219ac) DATE: 20/02/22 02:55:08 GMT FROM: Anna Ridnaia at Ioffe Institute A. Ridnaia, S. Golenetskii, R. Aptekar, D. Frederiks, D. Svinkin, 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, and A. von Kienlin, X. Zhang, A. Rau, V. Savchenko, E. Bozzo, and C. Ferrigno, on behalf of the INTEGRAL SPI-ACS GRB team, report: The long-duration GRB 200219B (Fermi-GBM detection: The Fermi GBM team, GCN 27127) has been detected by Fermi (GBM trigger 603798859), Konus-Wind, INTEGRAL (SPI-ACS), so far, at about 35652 s UT (09:54:12). We have triangulated it to a preliminary, 3 sigma error arc whose coordinates are: --------------------------------------------- RA(2000), deg Dec(2000), deg --------------------------------------------- Center: 305.322 (20h 21m 17s) +17.202 (+17d 12' 07") Corners: 303.847 (20h 15m 23s) +18.943 (+18d 56' 35") 288.913 (19h 15m 39s) -24.952 (-24d 57' 07") 293.218 (19h 32m 52s) -21.998 (-21d 59' 52") 306.769 (20h 27m 05s) +15.451 (+15d 27' 04") 348.097 (23h 12m 23s) +15.820 (+15d 49' 13") 352.740 (23h 30m 58s) +17.960 (+17d 57' 35") --------------------------------------------- The error arc area is 404.4 sq. deg, and its maximum dimension is ~81 deg (the minimum one is ~5 deg). The Sun distance was ~32 deg. The LIGO/Virgo S200219ac localization (LIGO/Virgo Collaboration, GCN Circ. 27130) is inconsistent with the arc. This arc may be improved. A triangulation map is posted at http://www.ioffe.ru/LEA/GRBs/GRB200219_T35651/IPN/ The time history and spectrum will be given in forthcoming GCN Circulars.