GRB210903A

This page lists all entries on GRB210903A in GRBweb

Summary Fermi GBM GCN 30752 GCN 30759

Summary table
Variable Value Source
GRB_name_Fermi GRB210903077
T0 1:50:07.917 UTC Fermi_GBM
ra 178.5700° Fermi_GBM
decl 39.0700° Fermi_GBM
pos_error 4.59e+00° Fermi_GBM
T90 15.872 s Fermi_GBM
T90_error 3.727 s Fermi_GBM
T90_start 1:50:07.917 UTC Fermi_GBM
fluence 1.37e-06 erg/cm² Fermi_GBM
fluence_error 4.38e-08 erg/cm² Fermi_GBM
T100 15.872 s
GBM_located True
mjd 59460.07648052083 Fermi_GBM
Fermi GBM table
GRB_name_Fermi GRB210903077
trigger_name bn210903077
ra 178.5700°
decl 39.0700°
pos_error 4.59e+00°
datum 2021-09-03
t_trigger 1:50:17.389 UTC
T90 15.872 s
T90_error 3.727 s
T90_start 1:50:07.917 UTC
fluence 1.37e-06 erg/cm²
fluence_error 4.38e-08 erg/cm²
flux_1024 3.79e+00 erg/cm²/s
flux_1024_error 3.05e-01 erg/cm²/s
flux_1024_time -1.92e-01 erg/cm²/s
flux_64 6.27e+00 erg/cm²/s
flux_64_error 1.33e+00 erg/cm²/s
GCN 30752 table
GRB_name GRB210903A
GCN_number 30752
Detection_method Fermi GBM final loc
t_trigger 1:50:17 UTC
ra 178.6000°
decl 39.1000°
Circular_text TITLE: GCN CIRCULAR NUMBER: 30752 SUBJECT: GRB 210903A: Fermi GBM Final Real-time Localization DATE: 21/09/03 02:00:41 GMT FROM: Fermi GBM Team at MSFC/Fermi-GBM The Fermi GBM team reports the detection of a likely LONG GRB At 01:50:17 UT on 3 Sep 2021, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 210903A (trigger 652326622.389106 / 210903077). The on-ground calculated location, using the Fermi GBM trigger data, is RA = 178.6, Dec = 39.1 (J2000 degrees, equivalent to J2000 11h 54m, 39d 06'), with a statistical uncertainty of 5.4 degrees. The angle from the Fermi LAT boresight is 102.0 degrees. The skymap can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2021/bn210903077/quicklook/glg_skymap_all_bn210903077.png The HEALPix FITS file, including the estimated localization systematic, can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2021/bn210903077/quicklook/glg_healpix_all_bn210903077.fit The GBM light curve can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2021/bn210903077/quicklook/glg_lc_medres34_bn210903077.gif
GCN 30759 table
GRB_name GRB210903A
GCN_number 30759
Detection_method Fermi GBM Other
Circular_text TITLE: GCN CIRCULAR NUMBER: 30759 SUBJECT: Fermi GRB 210903A: Global MASTER-Net observations report DATE: 21/09/03 18:15:21 GMT FROM: Vladimir Lipunov at Moscow State U/Krylov Obs V. Lipunov, E. Gorbovskoy, V.Kornilov, N.Tyurina, P.Balanutsa, A.Kuznetsov, F.Balakin, V.Vladimirov, D. Vlasenko, I.Gorbunov, D.Zimnukhov, V.Senik, T.Pogrosheva, D.Kuvshinov, D. Cheryasov (Lomonosov Moscow State University, SAI, Physics Department), R. Podesta, C.Lopez, F. Podesta, C.Francile (Observatorio Astronomico Felix Aguilar OAFA), R. Rebolo, M. Serra (The Instituto de Astrofisica de Canarias), D. Buckley (South African Astronomical Observatory), O.A. Gres, N.M. Budnev, O.Ershova (Irkutsk State University, API), A. Tlatov, D. Dormidontov (Kislovodsk Solar Station of the Pulkovo Observatory), V. Yurkov, A. Gabovich, Yu. Sergienko (Blagoveschensk Educational State University) MASTER-Tavrida robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Russia (Lomonosov MSU, SAI Crimea astronomical station) started inspect of the Fermi GRB 210903A ( Fermi GBM team, GCN 30752) errorbox 56033 sec after notice time and 56098 sec after trigger time at 2021-09-03 17:25:15 UT, with upper limit up to 18.6 mag. Observations started at twilight. The observations began at zenith distance = 69 deg. The sun altitude is -12.8 deg. The galactic latitude b = 74 deg., longitude l = 164 deg. Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/observ.php?id=1708312 We obtain a following upper limits. Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment _________|_____________________|_____________________|____________________________________|_____|_______|_______|________ 56128 | 2021-09-03 17:25:15 | MASTER-Tavrida | (12h 02m 08.49s , +38d 59m 08.2s) | C | 60 | 17.6 | 56207 | 2021-09-03 17:26:34 | MASTER-Tavrida | (12h 12m 24.55s , +39d 00m 39.2s) | C | 60 | 17.8 | 56438 | 2021-09-03 17:30:25 | MASTER-Tavrida | (12h 12m 59.54s , +40d 55m 06.6s) | C | 60 | 18.1 | 56517 | 2021-09-03 17:31:44 | MASTER-Tavrida | (12h 03m 33.73s , +42d 46m 35.9s) | C | 60 | 18.0 | 57008 | 2021-09-03 17:39:55 | MASTER-Tavrida | (12h 14m 34.76s , +42d 47m 02.0s) | C | 60 | 18.3 | 57404 | 2021-09-03 17:46:31 | MASTER-Tavrida | (12h 02m 01.58s , +38d 58m 43.9s) | C | 60 | 18.5 | 57483 | 2021-09-03 17:47:50 | MASTER-Tavrida | (12h 12m 26.04s , +38d 59m 03.2s) | C | 60 | 18.6 | 57562 | 2021-09-03 17:49:09 | MASTER-Tavrida | (12h 02m 26.10s , +40d 54m 08.7s) | C | 60 | 18.5 | 57641 | 2021-09-03 17:50:28 | MASTER-Tavrida | (12h 13m 03.20s , +40d 52m 36.4s) | C | 60 | 18.5 | 57720 | 2021-09-03 17:51:47 | MASTER-Tavrida | (12h 03m 41.09s , +42d 47m 32.7s) | C | 60 | 18.5 | 58369 | 2021-09-03 18:02:36 | MASTER-Tavrida | (11h 53m 47.03s , +42d 45m 34.2s) | C | 60 | 18.3 | 58448 | 2021-09-03 18:03:55 | MASTER-Tavrida | (12h 14m 40.54s , +42d 46m 09.0s) | C | 60 | 18.5 | Filter C is a clear (unfiltred) band. The observation and reduction will continue. The message may be cited.