//////////////////////////////////////////////////////////////////////// TITLE: GCN CIRCULAR NUMBER: 28843 SUBJECT: GRB 201105B: Fermi GBM observation DATE: 20/11/05 23:54:22 GMT FROM: Christian Malacaria at NASA-MSFC/USRA E. Bissaldi (Politecnico and INFN Bari) and S. Lesage (UAH) report on behalf of the Fermi GBM Team: "At 05:09:32.233 UT on 5 November 2020, the Fermi Gamma-Ray Burst Monitor (GBM) triggered and located GRB 201105B (trigger 626245777 / 201105215). The on-ground calculated location, using the GBM trigger data, is RA = 244.5, DEC = 16.0 (J2000 degrees, equivalent to 16h 18m, -16d 02'), with an uncertainty of 1.0 degrees (radius, 1-sigma containment, statistical only; there is additionally a systematic error which we have characterized as a mixture of two Gaussians, one with a radius of 1.8 degrees (52% contribution) and one with a radius of 4.1 degrees (47% contribution) [A. Goldstein et al. 2020, ApJ, 895, 1] ). The angle from the Fermi LAT boresight at the GBM trigger time is 92 degrees. The GBM light curve shows a FRED emission episode with a duration (T90) of about 17 s (50-300 keV). The time-averaged spectrum from T0 to T0+23 s is best fit by a Band function with Epeak = 512 +/- 21 keV, alpha = -0.95 +/- 0.01, and beta = -2.35 +/- 0.09. The event fluence (10-1000 keV) in this time interval is (5.13 +/- 0.05)E-05 erg/cm^2. The 1-sec peak photon flux measured starting from T0+2.7 s in the 10-1000 keV band is 28.5 +/- 0.5 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/" //////////////////////////////////////////////////////////////////////// TITLE: GCN CIRCULAR NUMBER: 28855 SUBJECT: Correction to GCN 28843: GBM report of GRB 201105B should have been GRB 201105A DATE: 20/11/06 16:07:49 GMT FROM: Elisabetta Bissaldi at INFN,Bari E. Bissaldi (Politecnico and INFN Bari) reports on behalf of the Fermi GBM Team: "The preliminary temporal and spectral analysis reported in GCN 28843 refer to trigger 626247072 / 201105230, detected by Fermi-GBM at 05:31:07.76 UT on 5 November 2020. This event was also detected by the Swift/BAT (Markwardt et al. 2020, GCN 28845). The GBM on-ground location, also reported in GCN 28843, is consistent with the Swift position. The skymap can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2020/bn201105230/quicklook/glg_skymap_all_bn201105230.png The HEALPix FITS file, including the estimated localization systematic, can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2020/bn201105230/quicklook/glg_healpix_all_bn201105230.fit The GBM light curve can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2020/bn201105230/quicklook/glg_lc_medres34_bn201105230.gif For Fermi GBM data and info, please visit the official Fermi GBM Support Page: https://fermi.gsfc.nasa.gov/ssc/data/access/gbm/"