GRB 201105B
GCN Circular 28855
Subject
Correction to GCN 28843: GBM report of GRB 201105B should have been GRB 201105A
Date
2020-11-06T16:07:49Z (5 years ago)
From
Elisabetta Bissaldi at INFN,Bari <elisabetta.bissaldi@ba.infn.it>
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/"
GCN Circular 28843
Subject
GRB 201105B: Fermi GBM observation
Date
2020-11-05T23:54:22Z (5 years ago)
From
Christian Malacaria at NASA-MSFC/USRA <cmalacaria@usra.edu>
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/"