The correlation between isotropic energy and duration of gamma-ray bursts
Abstract
In this paper, we study the correlation between isotropic energy and duration of gamma-ray bursts (GRBs) for the first time. The correlation is found to be Td Eiso0.34 0.03 from the Swift GRB sample. After comparing with solar flares from RHESSI and stellar superflares from Kepler satellite, we find that the correlation of GRBs shows similar exponent with those of solar flares and stellar superflares. Inspired by the physical mechanism of solar flares and stellar superflares which is magnetic reconnection, we interpret the correlation using magnetic reconnection theory. This similarity hints that magnetic reconnection may dominate energy releasing process of GRBs.
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