%0 Journal Article
%T GRB Spectral Hardness and Afterglow Properties
%A Jon Hakkila
%A Timothy Giblin
%A Robert D. Preece
%J Physics
%D 2000
%I arXiv
%R 10.1063/1.1361570
%X A possible relationship between the presence of a radio afterglow and gamma-ray burst spectral hardness is discussed. The correlation is marginally significant; the spectral hardness of the bursts with radio afterglows apparently results from a combination of the break energy Ebreak and the high-energy spectral index beta. If valid, this relationship would indicate that the afterglow does carry information pertaining to the GRB central engine.
%U http://arxiv.org/abs/astro-ph/0001339v1