[vsnet-grb-info 4024] RHESSI Spectrum of GRB061121

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  5838
SUBJECT: RHESSI Spectrum of GRB061121
DATE:    06/11/22 18:31:57 GMT
FROM:    Kevin Hurley at UCBerkeley/SSL  <khurley at ssl.berkeley.edu>

E. Bellm, M. Bandstra, S. Boggs, C. Wigger, W. Hajdas,
D. M. Smith, and K. Hurley on behalf of the RHESSI team report:

As observed by RHESSI, GRB061121 (Page et al., GCN 5823)
had a duration of ~19s starting at about T0=15:23:28 UT.
The preliminary fit to the time-integrated RHESSI spectrum
from T0 - T0+19s  between 30 keV and 3 MeV is a Band function with

alpha = -0.83 +0.24/-0.19
beta = -2.00 +0.18/-0.32
E0 = 390. +250/-150. keV
Epeak = 455. +/-115. keV
(90% confidence levels).

The 30 keV-3 MeV fluence is 4.88 +/- 0.41 E-5 erg/cm^2.