GRB250225A

This page lists all entries on GRB250225A in GRBweb

Summary Fermi GBM GCN 39467 GCN 39474

Summary table
Variable Value Source
GRB_name_Fermi GRB250225268
T0 6:25:19.718 UTC Fermi_GBM
ra 59.9600° Fermi_GBM
decl -40.5000° Fermi_GBM
pos_error 6.95e+00° Fermi_GBM
T90 52.48 s Fermi_GBM
T90_error 1.864 s Fermi_GBM
T90_start 6:25:19.718 UTC Fermi_GBM
fluence 1.62e-06 erg/cm² Fermi_GBM
fluence_error 3.86e-08 erg/cm² Fermi_GBM
T100 52.48 s
GBM_located True
mjd 60731.2675893287 Fermi_GBM
Fermi GBM table
GRB_name_Fermi GRB250225268
trigger_name bn250225268
ra 59.9600°
decl -40.5000°
pos_error 6.95e+00°
datum 2025-02-25
t_trigger 6:25:23.046 UTC
T90 52.48 s
T90_error 1.864 s
T90_start 6:25:19.718 UTC
fluence 1.62e-06 erg/cm²
fluence_error 3.86e-08 erg/cm²
flux_1024 1.48e+00 erg/cm²/s
flux_1024_error 1.96e-01 erg/cm²/s
flux_1024_time 1.66e+00 erg/cm²/s
flux_64 3.69e+00 erg/cm²/s
flux_64_error 1.07e+00 erg/cm²/s
GCN 39467 table
GRB_name GRB250225A
GCN_number 39467
Detection_method Fermi GBM final loc
t_trigger 6:25:23 UTC
ra 60.0000°
decl -40.5000°
Circular_text TITLE: GCN CIRCULAR NUMBER: 39467 SUBJECT: GRB 250225A: Fermi GBM Final Real-time Localization DATE: 25/02/25 06:35:59 GMT FROM: Fermi GBM Team at MSFC/Fermi-GBM The Fermi GBM team reports the detection of a likely LONG GRB At 06:25:23 UT on 25 Feb 2025, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 250225A (trigger 762157528.045892 / 250225268). The on-ground calculated location, using the Fermi GBM trigger data, is RA = 60.0, Dec = -40.5 (J2000 degrees, equivalent to J2000 04h 00m, -40d 30'), with a statistical uncertainty of 12.1 degrees. The angle from the Fermi LAT boresight is 72.0 degrees. The skymap can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2025/bn250225268/quicklook/glg_skymap_all_bn250225268.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/bn250225268/quicklook/glg_healpix_all_bn250225268.fit The GBM light curve can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2025/bn250225268/quicklook/glg_lc_medres34_bn250225268.gif
GCN 39474 table
GRB_name GRB250225A
GCN_number 39474
Detection_method Fermi GBM Other
Circular_text TITLE: GCN CIRCULAR NUMBER: 39474 SUBJECT: Fermi GRB 250225A: Global MASTER-Net observations report DATE: 25/02/25 21:03:06 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 250225A ( Fermi GBM team, GCN 39467) errorbox 44698 sec after notice time and 44737 sec after trigger time at 2025-02-25 18:51:00 UT, with upper limit up to 19.1 mag. The observations began at zenith distance = 33 deg. The sun altitude is -19.6 deg. The galactic latitude b = -49 deg., longitude l = 244 deg. Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/observ.php?id=2790801 We obtain a following upper limits. Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment _________|_____________________|_____________________|____________________________________|_____|_______|_______|________ 44768 | 2025-02-25 18:51:00 | MASTER-SAAO | (03h 54m 49.41s , -40d 48m 54.8s) | C | 60 | 18.8 | 44847 | 2025-02-25 18:52:19 | MASTER-SAAO | (04h 05m 18.27s , -40d 47m 21.7s) | C | 60 | 18.7 | 44926 | 2025-02-25 18:53:39 | MASTER-SAAO | (03h 48m 24.30s , -38d 53m 35.9s) | C | 60 | 18.5 | 45006 | 2025-02-25 18:54:58 | MASTER-SAAO | (03h 58m 33.77s , -38d 54m 13.2s) | C | 60 | 18.5 | 45085 | 2025-02-25 18:56:18 | MASTER-SAAO | (04h 01m 53.31s , -42d 42m 05.9s) | C | 60 | 18.6 | 45167 | 2025-02-25 18:57:39 | MASTER-SAAO | (04h 12m 37.11s , -42d 43m 05.4s) | C | 60 | 18.9 | 45246 | 2025-02-25 18:58:59 | MASTER-SAAO | (03h 41m 13.44s , -42d 41m 11.6s) | C | 60 | 18.8 | 45325 | 2025-02-25 19:00:18 | MASTER-SAAO | (03h 52m 04.78s , -42d 42m 33.9s) | C | 60 | 19.0 | 45423 | 2025-02-25 19:01:56 | MASTER-SAAO | (03h 54m 49.21s , -40d 47m 23.4s) | C | 60 | 18.7 | 45503 | 2025-02-25 19:03:15 | MASTER-SAAO | (04h 05m 16.54s , -40d 47m 55.2s) | C | 60 | 18.9 | 45741 | 2025-02-25 19:07:13 | MASTER-SAAO | (03h 48m 17.83s , -38d 54m 45.8s) | C | 60 | 18.6 | 45820 | 2025-02-25 19:08:33 | MASTER-SAAO | (03h 58m 39.26s , -38d 54m 26.3s) | C | 60 | 18.5 | 45900 | 2025-02-25 19:09:52 | MASTER-SAAO | (04h 01m 51.26s , -42d 40m 43.1s) | C | 60 | 18.9 | 45979 | 2025-02-25 19:11:12 | MASTER-SAAO | (04h 12m 42.31s , -42d 42m 16.8s) | C | 60 | 18.8 | 46058 | 2025-02-25 19:12:31 | MASTER-SAAO | (03h 41m 16.02s , -42d 40m 55.7s) | C | 60 | 19.1 | 46137 | 2025-02-25 19:13:50 | MASTER-SAAO | (03h 52m 03.12s , -42d 41m 27.8s) | C | 60 | 19.0 | 46217 | 2025-02-25 19:15:09 | MASTER-SAAO | (03h 54m 43.40s , -40d 46m 27.2s) | C | 60 | 18.8 | 46296 | 2025-02-25 19:16:29 | MASTER-SAAO | (04h 05m 22.17s , -40d 47m 26.6s) | C | 60 | 18.7 | 46376 | 2025-02-25 19:17:48 | MASTER-SAAO | (03h 48m 17.65s , -38d 54m 21.8s) | C | 60 | 18.5 | 46456 | 2025-02-25 19:19:08 | MASTER-SAAO | (03h 58m 39.07s , -38d 54m 08.0s) | C | 60 | 18.8 | 46535 | 2025-02-25 19:20:28 | MASTER-SAAO | (04h 01m 51.71s , -42d 40m 26.7s) | C | 60 | 18.6 | 46614 | 2025-02-25 19:21:47 | MASTER-SAAO | (04h 12m 43.06s , -42d 42m 11.9s) | C | 60 | 18.7 | 46695 | 2025-02-25 19:23:08 | MASTER-SAAO | (03h 41m 17.18s , -42d 40m 34.0s) | C | 60 | 18.6 | 46784 | 2025-02-25 19:24:37 | MASTER-SAAO | (03h 52m 01.84s , -42d 41m 05.5s) | C | 60 | 18.9 | 46863 | 2025-02-25 19:25:56 | MASTER-SAAO | (03h 54m 44.70s , -40d 46m 04.3s) | C | 60 | 18.6 | 46943 | 2025-02-25 19:27:15 | MASTER-SAAO | (04h 05m 22.62s , -40d 47m 03.2s) | C | 60 | 18.4 | 47022 | 2025-02-25 19:28:34 | MASTER-SAAO | (03h 48m 17.09s , -38d 53m 59.3s) | C | 60 | 18.5 | 47102 | 2025-02-25 19:29:55 | MASTER-SAAO | (03h 58m 38.43s , -38d 53m 36.6s) | C | 60 | 18.4 | 47182 | 2025-02-25 19:31:14 | MASTER-SAAO | (04h 01m 52.00s , -42d 39m 55.2s) | C | 60 | 18.8 | 47267 | 2025-02-25 19:32:39 | MASTER-SAAO | (04h 12m 43.40s , -42d 41m 44.3s) | C | 60 | 18.4 | 47346 | 2025-02-25 19:33:59 | MASTER-SAAO | (03h 41m 15.66s , -42d 39m 54.0s) | C | 60 | 18.7 | 47426 | 2025-02-25 19:35:18 | MASTER-SAAO | (03h 52m 01.71s , -42d 40m 43.5s) | C | 60 | 18.6 | 47505 | 2025-02-25 19:36:38 | MASTER-SAAO | (03h 54m 44.12s , -40d 45m 42.3s) | C | 60 | 18.5 | 47585 | 2025-02-25 19:37:57 | MASTER-SAAO | (04h 05m 22.69s , -40d 46m 41.4s) | C | 60 | 18.5 | 47664 | 2025-02-25 19:39:17 | MASTER-SAAO | (03h 48m 17.11s , -38d 53m 37.9s) | C | 60 | 18.3 | 47744 | 2025-02-25 19:40:36 | MASTER-SAAO | (03h 58m 38.68s , -38d 53m 36.3s) | C | 60 | 18.3 | 47823 | 2025-02-25 19:41:56 | MASTER-SAAO | (04h 01m 52.08s , -42d 39m 55.6s) | C | 60 | 18.3 | 47907 | 2025-02-25 19:43:20 | MASTER-SAAO | (04h 12m 43.76s , -42d 41m 01.5s) | C | 60 | 18.3 | 47987 | 2025-02-25 19:44:39 | MASTER-SAAO | (03h 41m 15.72s , -42d 39m 30.2s) | C | 60 | 18.6 | 48066 | 2025-02-25 19:45:58 | MASTER-SAAO | (03h 52m 02.90s , -42d 40m 21.6s) | C | 60 | 18.3 | 48145 | 2025-02-25 19:47:18 | MASTER-SAAO | (03h 54m 42.90s , -40d 45m 20.4s) | C | 60 | 17.8 | 48226 | 2025-02-25 19:48:38 | MASTER-SAAO | (04h 05m 21.63s , -40d 46m 19.8s) | C | 60 | 18.5 | 48307 | 2025-02-25 19:49:59 | MASTER-SAAO | (03h 48m 16.28s , -38d 53m 16.1s) | C | 60 | 18.0 | 48386 | 2025-02-25 19:51:18 | MASTER-SAAO | (03h 58m 38.73s , -38d 52m 47.9s) | C | 60 | 17.4 | 48465 | 2025-02-25 19:52:38 | MASTER-SAAO | (04h 01m 52.05s , -42d 39m 32.2s) | C | 60 | 17.3 | 48545 | 2025-02-25 19:53:57 | MASTER-SAAO | (04h 12m 44.00s , -42d 40m 40.8s) | C | 60 | 17.4 | 48624 | 2025-02-25 19:55:16 | MASTER-SAAO | (03h 41m 16.82s , -42d 39m 08.2s) | C | 60 | 16.4 | 48705 | 2025-02-25 19:56:38 | MASTER-SAAO | (03h 52m 01.56s , -42d 40m 01.8s) | C | 60 | 17.2 | Filter C is a clear (unfiltred) band. The observation and reduction will continue. The message may be cited.