TITLE:   GCN GRB OBSERVATION REPORT
NUMBER:  5418
SUBJECT: GRB 060805B: RHESSI Spectral Fit
DATE:    06/08/07 21:23:12 GMT
FROM:    Eric Bellm at UCB/SSL  <ebellm@ssl.berkeley.edu>

E. Bellm, M. Bandstra, S. Boggs, D. M. Smith, R. P. Lin, J. McTiernan, R.
Schwartz, C. Wigger, W. Hajdas, A. Zehnder, and K. Hurley, report:

The preliminary fit to the time-integrated RHESSI spectrum of
GRB060805B (Hurley et al., GCN 5407; Butler, GCN 5414) between 30 keV
and 10 MeV is a Band function with

alpha = -0.66 +0.12/-0.10
beta = -2.52 +0.16/-0.22
E0 = 240. +45/-40. keV
Epeak = 320. +/-20. keV

The 30 keV-10 MeV fluence is 1.13 +/- 0.046 E-4 erg/cm^2.