GRBweb by P. Coppin

This page lists all entries on GRB210621A in GRBweb

Summary Fermi GBM GCN 30285 GCN 30287

Summary table
Variable	Value	Source
GRB_name_Fermi	GRB210621447
T0	10:44:03 UTC	GCN_circulars,Fermi GBM final loc
ra	248.3100°	Fermi_GBM
decl	-61.0700°	Fermi_GBM
pos_error	5.06e+00°	Fermi_GBM
T90	15.616 s	Fermi_GBM
T90_error	3.874 s	Fermi_GBM
T90_start	10:44:03.238 UTC	Fermi_GBM
fluence	1.07e-06 erg/cm²	Fermi_GBM
fluence_error	5.76e-08 erg/cm²	Fermi_GBM
T100	15.854 s
GBM_located	True
mjd	59386.44725694445	GCN_circulars,Fermi GBM final loc

Fermi GBM table
GRB_name_Fermi	GRB210621447
trigger_name	bn210621447
ra	248.3100°
decl	-61.0700°
pos_error	5.06e+00°
datum	2021-06-21
t_trigger	10:44:03.750 UTC
T90	15.616 s
T90_error	3.874 s
T90_start	10:44:03.238 UTC
fluence	1.07e-06 erg/cm²
fluence_error	5.76e-08 erg/cm²
flux_1024	5.98e+00 erg/cm²/s
flux_1024_error	2.60e-01 erg/cm²/s
flux_1024_time	-1.92e-01 erg/cm²/s
flux_64	7.75e+00 erg/cm²/s
flux_64_error	1.19e+00 erg/cm²/s

GCN 30285 table
GRB_name	GRB210621A
GCN_number	30285
Detection_method	Fermi GBM final loc
t_trigger	10:44:03 UTC
ra	248.3000°
decl	-61.1000°
Circular_text	TITLE: GCN CIRCULAR NUMBER: 30285 SUBJECT: GRB 210621A: Fermi GBM Final Real-time Localization DATE: 21/06/21 10:54:22 GMT FROM: Fermi GBM Team at MSFC/Fermi-GBM The Fermi GBM team reports the detection of a likely SHORT GRB At 10:44:03 UT on 21 Jun 2021, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 210621A (trigger 645965048.749786 / 210621447). The on-ground calculated location, using the Fermi GBM trigger data, is RA = 248.3, Dec = -61.1 (J2000 degrees, equivalent to J2000 16h 33m, -61d 06'), with a statistical uncertainty of 8.6 degrees. The angle from the Fermi LAT boresight is 78.0 degrees. The skymap can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2021/bn210621447/quicklook/glg_skymap_all_bn210621447.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/bn210621447/quicklook/glg_healpix_all_bn210621447.fit The GBM light curve can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2021/bn210621447/quicklook/glg_lc_medres34_bn210621447.gif

GCN 30287 table
GRB_name	GRB210621A
GCN_number	30287
Detection_method	Fermi GBM Other
Circular_text	TITLE: GCN CIRCULAR NUMBER: 30287 SUBJECT: Fermi GRB 210621A: Global MASTER-Net observations report DATE: 21/06/21 12:51:43 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-OAFA robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Argentina (OAFA observatory of San Juan National University) started inspect of the Fermi GRB 210621A ( Fermi GBM team, GCN 30285) errorbox 353 sec after notice time and 399 sec after trigger time at 2021-06-21 10:50:43 UT, with upper limit up to 15.2 mag. Observations started at twilight. The observations began at zenith distance = 75 deg. The sun altitude is -9.0 deg. The galactic latitude b = -9 deg., longitude l = 327 deg. Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/observ.php?id=1641646 We obtain a following upper limits. Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment _________|_____________________|_____________________|____________________________________|_____|_______|_______|________ 430 | 2021-06-21 10:50:43 | MASTER-OAFA | (16h 35m 08.88s , -58d 53m 13.5s) | C | 60 | 15.2 | Filter C is a clear (unfiltred) band. The observation and reduction will continue. The message may be cited.