GRB220311A

This page lists all entries on GRB220311A in GRBweb

Summary Fermi GBM IPN GCN 31740 GCN 31744 GCN 31745 GCN 31757 GCN 31760

Summary table
Variable Value Source
GRB_name_Fermi GRB220311690
T0 16:33:10 UTC GCN_circulars,INTEGRAL
ra 157.9750° IPN
decl 66.0833° IPN
pos_error 5.00e-02° IPN
T90 10.496 s Fermi_GBM
T90_error 1.95 s Fermi_GBM
T90_start 16:33:12.257 UTC Fermi_GBM
fluence 1.25e-06 erg/cm² Fermi_GBM
fluence_error 4.30e-08 erg/cm² Fermi_GBM
T100 12.753 s
GBM_located False
mjd 59649.68969907407 GCN_circulars,INTEGRAL
Fermi GBM table
GRB_name_Fermi GRB220311690
trigger_name bn220311690
ra 157.9750°
decl 66.0819°
pos_error 1.12e+01°
datum 2022-03-11
t_trigger 16:33:18.401 UTC
T90 10.496 s
T90_error 1.95 s
T90_start 16:33:12.257 UTC
fluence 1.25e-06 erg/cm²
fluence_error 4.30e-08 erg/cm²
flux_1024 1.84e+00 erg/cm²/s
flux_1024_error 3.25e-01 erg/cm²/s
flux_1024_time -4.67e+00 erg/cm²/s
flux_64 4.26e+00 erg/cm²/s
flux_64_error 1.53e+00 erg/cm²/s
IPN table
GRB_name GRB220311A
ra 157.9750°
decl 66.0833°
pos_error 5.00e-02°
GCN 31740 table
GRB_name GRB220311A
GCN_number 31740
Detection_method Fermi GBM final loc
t_trigger 16:33:18 UTC
ra 131.1000°
decl 55.0000°
Circular_text TITLE: GCN CIRCULAR NUMBER: 31740 SUBJECT: GRB 220311A: Fermi GBM Final Real-time Localization DATE: 22/03/11 16:43:54 GMT FROM: Fermi GBM Team at MSFC/Fermi-GBM The Fermi GBM team reports the detection of a likely LONG GRB At 16:33:18 UT on 11 Mar 2022, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 220311A (trigger 668709203.400826 / 220311690). The on-ground calculated location, using the Fermi GBM trigger data, is RA = 131.1, Dec = 55.0 (J2000 degrees, equivalent to J2000 08h 44m, 55d 00'), with a statistical uncertainty of 18.6 degrees. The angle from the Fermi LAT boresight is 111.0 degrees. The skymap can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2022/bn220311690/quicklook/glg_skymap_all_bn220311690.png The HEALPix FITS file, including the estimated localization systematic, can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2022/bn220311690/quicklook/glg_healpix_all_bn220311690.fit The GBM light curve can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2022/bn220311690/quicklook/glg_lc_medres34_bn220311690.gif
GCN 31744 table
GRB_name GRB220311A
GCN_number 31744
Detection_method INTEGRAL
t_trigger 16:33:10 UTC
ra 157.9747°
decl 66.0819°
Circular_text TITLE: GCN CIRCULAR NUMBER: 31744 SUBJECT: GRB 220311A: A long GRB detected by INTEGRAL DATE: 22/03/11 17:24:07 GMT FROM: Sandro Mereghetti at IASF-Milano/INAF S.Mereghetti (INAF, IASF-Milano), D.Gotz (CEA, Saclay), C.Ferrigno, E.Bozzo, V.Savchenko (ISDC, Versoix), L.Ducci (IAAT, Germany and ISDC, Versoix) and J.Borkowski (CAMK, Torun) report: a gamma ray burst lasting about 20 s has been detected by IBAS in the IBIS/ISGRI data at 16:33:10 UT of March 11, 2022. The refined coordinates (J2000) are: R.A.= 157.9747 deg DEC.= +66.0819 deg with an uncertainty of 3 arcmin (90% c.l.). The burst had a peak flux of 0.3 ph/cm2/s (20-200 keV, 1-s integration time) and a fluence in the same energy range of about 2e-7 erg/cmq. A plot of the light curve will be posted at http://ibas.iasf-milano.inaf.it/IBAS_Results.html --
GCN 31745 table
GRB_name GRB220311A
GCN_number 31745
Detection_method retraction
Circular_text TITLE: GCN CIRCULAR NUMBER: 31745 SUBJECT: GRB 220311A: MASTER OT retraction DATE: 22/03/11 19:50:59 GMT FROM: Vladimir Lipunov at Moscow State U/Krylov Obs V. Lipunov (Lomonosov MSU) The published OT candidate (GCN Circ 31741) is the noise inside the errorbox of one of the invalid triggers. I'm sorry for the problems.
GCN 31757 table
GRB_name GRB220311A
GCN_number 31757
Detection_method MITSuME
Circular_text TITLE: GCN CIRCULAR NUMBER: 31757 SUBJECT: GRB 220311A: MITSuME Akeno optical upper limits DATE: 22/03/15 02:22:55 GMT FROM: Ryohei Hosokawa at Tokyo Institute of Technology R. Hosokawa, Y. Imai, R. Yamaguchi, K. L. Murata, M. Niwano, N. Ito, Y. Takamatsu, R. Noto, S. Sato, M. Takaku, Y. Yatsu, and N. Kawai (Tokyo Tech) report on behalf of the MITSuME collaboration: We observed the field of GRB 220311A (The Fermi GBM team GCN Circular #31740, V. Yurkov et al. GCN Circular #31741, V. Lipunov et al. GCN Circular #31742, V. Lipunov et al. GCN Circular #31743, S.Mereghetti et al. GCN Circular #31744, V. Lipunov et al. GCN Circular #31745) with the optical three color (g', Rc, and Ic) CCD cameras attached to the MITSuME 50 cm telescope Akeno. The observation with a series of 60 sec exposures started at 2022-03-11 16:44:51 UT (11.7 minutes after IBAS trigger). We stacked the images with good conditions. We did not detect any uncatalogued sources within the IBAS error region (S.Mereghetti et al. GCN Circular #31744). We obtained the 5-sigma limits of the stacked images as follows. T0+[min] MID-UT T-EXP[sec] 5-sigma limits ------------------------------------------------------------------------------------------------ 29.0 2022-03-11 17:02:10 1440 g'>19.8, Rc>19.8, Ic>19.0 ------------------------------------------------------------------------------------------------ T0+ : Elapsed time after the burst T-EXP: Total Exposure time We used PS1 catalog for flux calibration. The magnitudes are expressed in the AB system. The images were processed in real-time through the MITSuME GPU reduction pipeline (Niwano et al. 2021, PASJ, Vol.73, Issue 1, Pages 4-24; https://github.com/MNiwano/Eclaire).
GCN 31760 table
GRB_name GRB220311A
GCN_number 31760
Detection_method Fermi GBM Det
t_trigger 16:33:18.400 UTC
Circular_text TITLE: GCN CIRCULAR NUMBER: 31760 SUBJECT: GRB 220311A: Fermi GBM observation DATE: 22/03/15 14:57:05 GMT FROM: Rachel Hamburg at UAH R. Hamburg (UAH) and C. Meegan (UAH) report on behalf of the Fermi GBM Team: "At 16:33:18.40 UT on 11 March 2022, the Fermi Gamma-Ray Burst Monitor (GBM) triggered and located GRB 220311A (trigger 668709203 / 220311690), which was also detected by the INTEGRAL/IBAS (Mereghetti et al. 2022, GCN 31740). The Fermi GBM Final Real-time Localization (GCN 31744) is largely consistent with the INTEGRAL position. The angle from the Fermi LAT boresight at the GBM trigger time is 111 degrees. The GBM light curve shows a single spike with a duration (T90) of about 10 s (50-300 keV). The time-averaged spectrum from T0-5.1 s to T0+0.0 s is adequately a simple power law function with index -1.55 +/- 0.11. The event fluence (10-1000 keV) in this time interval is (1.8 +/- 0.3)E-06 erg/cm^2. The 1-sec peak photon flux measured starting from T0-4.7 s in the 10-1000 keV band is 1.8 +/- 0.3 ph/s/cm^2. The spectral analysis results presented above are preliminary; final results will be published in the GBM GRB Catalog: https://heasarc.gsfc.nasa.gov/W3Browse/fermi/fermigbrst.html For Fermi GBM data and info, please visit the official Fermi GBM Support Page: https://fermi.gsfc.nasa.gov/ssc/data/access/gbm/"