Akademik Veri Yönetim Sistemi
Fall Gamma Ray Burst Symposium on 15 years of Gamma-Ray Bursts afterglows: Progenitors, Environments and Host Galaxies from the Nearby to the Early Universe, Malaga, İspanya, 8 - 12 Ekim 2012, cilt.61, ss.211-215
We examine 48 Swift/UVOT long Gamma-ray Burst light curves and find a correlation between the logarithmic luminosity at 200 s and average decay rate determined from 200 s onwards, with a Spearman rank coefficient of -0.58 at a significance of 99.998% (4.2 sigma). We determine the log L-200s - alpha(>200s) correlation to be intrinsic and discuss two possible causes: there is a property of the central engine, outflow or external medium that effects the rate of energy release so that the bright afterglows release their energy more quickly and decay faster than the fainter afterglows; alternatively, the observers viewing angle may produce the correlation, with observers at large viewing angles observing fainter and slower decaying light curves.