Bellm 2008 RHESSI Spectral Fits of Swift GRBs -- E_peak

主要内容:
RHESSI is sensitive from 30 keV to 17 MeV.

精彩摘抄:

Some E_ps

文章信息:

arXiv:0801.2417 [ps, pdf, other]

Title: RHESSI Spectral Fits of Swift GRBs

Authors: Eric C. Bellm, Mark E. Bandstra, Steven E. Boggs, Wojtek Hajdas, Kevin Hurley, David M. Smith, Claudia Wigger

Comments: 4 pages, 1 figure. To appear in the proceedings of Gamma Ray Bursts 2007, Santa Fe, New Mexico, November 5-9 2007

Subjects: Astrophysics (astro-ph)

One of the challenges of the Swift era has been accurately determining Epeak for the prompt GRB emission. RHESSI, which is sensitive from 30 keV to 17 MeV, can extend spectral coverage above the Swift-BAT bandpass. Using the public Swift data, we present results of joint spectral fits for 26 bursts co-observed by RHESSI and Swift-BAT through May 2007. We compare these fits to estimates of Epeak which rely on BAT data alone. A Bayesian Epeak estimator gives better correspondence with our measured results than an estimator relying on correlations with the Swift power law indices.