An Interpretation of the $hν_{peak}$ - $E_{iso}$ Correlation for GRB
arXiv:astro-ph/0405014 · doi:10.1086/425310
Abstract
The $hν_{peak}/100 KeV \sim [E_{iso}/10^{52} \rm{erg}]^{1/2}$ correlation reported recently by Amati et al. (2002) and Lamb et al. (2003) for long GRB's can be interpreted as a viewing angle effect if the emitting region of the fireball is ring-shaped.
12 pages. 5 figures