GRB250223A

This page lists all entries on GRB250223A in GRBweb

Summary Fermi GBM GCN 39430 GCN 39432

Summary table
Variable Value Source
GRB_name_Fermi GRB250223692
T0 16:36:10.591 UTC Fermi_GBM
ra 340.5600° Fermi_GBM
decl -40.2900° Fermi_GBM
pos_error 1.62e+01° Fermi_GBM
T90 1.216 s Fermi_GBM
T90_error 0.854 s Fermi_GBM
T90_start 16:36:10.591 UTC Fermi_GBM
fluence 8.75e-08 erg/cm² Fermi_GBM
fluence_error 2.07e-08 erg/cm² Fermi_GBM
T100 1.216 s
GBM_located True
mjd 60729.691789247685 Fermi_GBM
Fermi GBM table
GRB_name_Fermi GRB250223692
trigger_name bn250223692
ra 340.5600°
decl -40.2900°
pos_error 1.62e+01°
datum 2025-02-23
t_trigger 16:36:11.807 UTC
T90 1.216 s
T90_error 0.854 s
T90_start 16:36:10.591 UTC
fluence 8.75e-08 erg/cm²
fluence_error 2.07e-08 erg/cm²
flux_1024 1.19e+00 erg/cm²/s
flux_1024_error 2.83e-01 erg/cm²/s
flux_1024_time -7.68e-01 erg/cm²/s
flux_64 4.62e+00 erg/cm²/s
flux_64_error 1.38e+00 erg/cm²/s
GCN 39430 table
GRB_name GRB250223A
GCN_number 39430
Detection_method Fermi GBM final loc
t_trigger 16:36:11 UTC
ra 340.6000°
decl -40.3000°
Circular_text TITLE: GCN CIRCULAR NUMBER: 39430 SUBJECT: GRB 250223A: Fermi GBM Final Real-time Localization DATE: 25/02/23 16:46:39 GMT FROM: Fermi GBM Team at MSFC/Fermi-GBM The Fermi GBM team reports the detection of a likely SHORT GRB At 16:36:11 UT on 23 Feb 2025, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 250223A (trigger 762021376.807148 / 250223692). The on-ground calculated location, using the Fermi GBM trigger data, is RA = 340.6, Dec = -40.3 (J2000 degrees, equivalent to J2000 22h 42m, -40d 17'), with a statistical uncertainty of 31.6 degrees. The angle from the Fermi LAT boresight is 95.0 degrees. The skymap can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2025/bn250223692/quicklook/glg_skymap_all_bn250223692.png The HEALPix FITS file, including the estimated localization systematic, can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2025/bn250223692/quicklook/glg_healpix_all_bn250223692.fit The GBM light curve can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2025/bn250223692/quicklook/glg_lc_medres34_bn250223692.gif
GCN 39432 table
GRB_name GRB250223A
GCN_number 39432
Detection_method Fermi GBM Other
Circular_text TITLE: GCN CIRCULAR NUMBER: 39432 SUBJECT: Fermi GRB 250223A: Global MASTER-Net observations report DATE: 25/02/23 18:31:10 GMT FROM: Vladimir Lipunov at Moscow State U/Krylov Obs V.Lipunov, E.Gorbovskoy, N.Tiurina, P.Balanutsa, , D.Vlasenko, I.Panchenko, A.Kuznetsov, G.Antipov, A.Sankovich, A.Sosnovskij, Yu.Tselik, M.Gulyaev, Ya.Kechin, V.Senik, A.Chasovnikov, K.Labsina, I. Gorbunov (Lomonosov MSU), O.Gress, N.Budnev (ISU), C.Francile, F. Podesta, R.Podesta, E. Gonzalez (Observatorio Astronomico Felix Aguilar (OAFA), A. Tlatov, D. Dormidontov (Kislovodsk Solar Station of the Pulkovo Observatory), A. Gabovich, V.Yurkov (Blagoveschensk Educational StateUniversity) D.Buckley (SAAO), R.Rebolo (The Instituto de Astrofisica de Canarias), L.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez, A.R.Corella, L.H.Rodriguez (INAOE, Guillermo Haro Astrophysics Observatory) MASTER-SAAO robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in South Africa (South African Astronomical Observatory) started inspect of the Fermi GRB 250223A ( Fermi GBM team, GCN 39430) errorbox 6037 sec after notice time and 6071 sec after trigger time at 2025-02-23 18:17:23 UT, with upper limit up to 17.8 mag. Observations started at twilight. The observations began at zenith distance = 81 deg. The sun altitude is -12.4 deg. The galactic latitude b = -61 deg., longitude l = 358 deg. Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/observ.php?id=2788279 We obtain a following upper limits. Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment _________|_____________________|_____________________|____________________________________|_____|_______|_______|________ 6101 | 2025-02-23 18:17:23 | MASTER-SAAO | (21h 30m 33.95s , -55d 53m 54.3s) | C | 60 | 16.5 | 6180 | 2025-02-23 18:18:42 | MASTER-SAAO | (21h 44m 51.61s , -55d 55m 08.8s) | C | 60 | 16.9 | 6260 | 2025-02-23 18:20:01 | MASTER-SAAO | (21h 48m 30.70s , -54d 02m 03.5s) | C | 60 | 16.9 | 6339 | 2025-02-23 18:21:20 | MASTER-SAAO | (22h 02m 01.64s , -54d 00m 54.6s) | C | 60 | 17.2 | 6419 | 2025-02-23 18:22:40 | MASTER-SAAO | (21h 57m 39.63s , -55d 54m 33.4s) | C | 60 | 17.4 | 6498 | 2025-02-23 18:23:59 | MASTER-SAAO | (22h 11m 47.32s , -55d 55m 37.0s) | C | 60 | 17.8 | 6577 | 2025-02-23 18:25:18 | MASTER-SAAO | (22h 06m 14.56s , -52d 07m 28.6s) | C | 60 | 17.5 | 6656 | 2025-02-23 18:26:38 | MASTER-SAAO | (22h 19m 06.47s , -52d 08m 45.6s) | C | 60 | 17.8 | Filter C is a clear (unfiltred) band. The observation and reduction will continue. The message may be cited.