GRB250624A

This page lists all entries on GRB250624A in GRBweb

Summary Fermi GBM GCN 40817 GCN 40818

Summary table
Variable Value Source
GRB_name_Fermi GRB250624817
T0 19:36:21 UTC GCN_circulars,Fermi GBM final loc
ra 10.6100° Fermi_GBM
decl 16.6400° Fermi_GBM
pos_error 3.88e+00° Fermi_GBM
T90 99.586 s Fermi_GBM
T90_error 2.862 s Fermi_GBM
T90_start 19:36:21.338 UTC Fermi_GBM
fluence 9.37e-06 erg/cm² Fermi_GBM
fluence_error 4.44e-08 erg/cm² Fermi_GBM
T100 99.924 s
GBM_located True
mjd 60850.81690972222 GCN_circulars,Fermi GBM final loc
Fermi GBM table
GRB_name_Fermi GRB250624817
trigger_name bn250624817
ra 10.6100°
decl 16.6400°
pos_error 3.88e+00°
datum 2025-06-24
t_trigger 19:36:21.850 UTC
T90 99.586 s
T90_error 2.862 s
T90_start 19:36:21.338 UTC
fluence 9.37e-06 erg/cm²
fluence_error 4.44e-08 erg/cm²
flux_1024 2.76e+00 erg/cm²/s
flux_1024_error 2.16e-01 erg/cm²/s
flux_1024_time 3.37e+01 erg/cm²/s
flux_64 4.54e+00 erg/cm²/s
flux_64_error 1.35e+00 erg/cm²/s
GCN 40817 table
GRB_name GRB250624A
GCN_number 40817
Detection_method Fermi GBM final loc
t_trigger 19:36:21 UTC
ra 10.6000°
decl 16.6000°
Circular_text TITLE: GCN CIRCULAR NUMBER: 40817 SUBJECT: GRB 250624A: Fermi GBM Final Real-time Localization DATE: 25/06/24 19:46:55 GMT FROM: Fermi GBM Team at MSFC/Fermi-GBM The Fermi GBM team reports the detection of a likely LONG GRB At 19:36:21 UT on 24 Jun 2025, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 250624A (trigger 772486586.849764 / 250624817). The on-ground calculated location, using the Fermi GBM trigger data, is RA = 10.6, Dec = 16.6 (J2000 degrees, equivalent to J2000 00h 42m, 16d 36'), with a statistical uncertainty of 5.3 degrees. The angle from the Fermi LAT boresight is 56.0 degrees. The skymap can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2025/bn250624817/quicklook/glg_skymap_all_bn250624817.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/bn250624817/quicklook/glg_healpix_all_bn250624817.fit The GBM light curve can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2025/bn250624817/quicklook/glg_lc_medres34_bn250624817.gif
GCN 40818 table
GRB_name GRB250624A
GCN_number 40818
Detection_method Fermi GBM Other
Circular_text TITLE: GCN CIRCULAR NUMBER: 40818 SUBJECT: Fermi GRB 250624A: Global MASTER-Net observations report DATE: 25/06/24 20:30:25 GMT FROM: Vladimir Lipunov at Moscow State U/Krylov Obs V.Lipunov, E.Gorbovskoy, A.Kuznetsov, K.Zhirkov, I.Panchenko, N.Tiurina, P.Balanutsa, V.Topolev, D.Vlasenko, G.Antipov, A.Sankovich, Yu.Tselik, 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.Sosnovskij (CrAO), 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-Tunka robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Russia (Applied Physics Institute, Irkutsk State University) started inspect of the Fermi GRB 250624A ( Fermi GBM team, GCN 40817) errorbox 542 sec after notice time and 573 sec after trigger time at 2025-06-24 19:45:55 UT, with upper limit up to 14.4 mag. Observations started at twilight. The observations began at zenith distance = 57 deg. The sun altitude is -8.0 deg. The galactic latitude b = -46 deg., longitude l = 121 deg. Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/observ.php?id=2915767 We obtain a following upper limits. Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment _________|_____________________|_____________________|____________________________________|_____|_______|_______|________ 574 | 2025-06-24 19:45:55 | MASTER-Tunka | (00h 36m 20.26s , +16d 05m 54.9s) | C | 1 | 14.4 | 584 | 2025-06-24 19:46:05 | MASTER-Tunka | (00h 36m 20.23s , +16d 05m 54.7s) | C | 1 | 14.4 | 590 | 2025-06-24 19:46:10 | MASTER-Tunka | (00h 36m 20.23s , +16d 05m 54.6s) | C | 1 | 14.4 | Filter C is a clear (unfiltred) band. The observation and reduction will continue. The message may be cited.