Willingale 2007 a new relation E_pw-L_iso
主要内容:
Ewz keV vs. the peak isotropic luminosity seems better than the Amati relation.
Many data contained in the tables, including beta_X, beta_gamma, E_p, F_tot, T_90, etc.
精彩摘抄:
Amati relation
Ewz keV vs. the peak isotropic luminosity, Liso = EwzQpz/TLz ergs s−1.
文章信息:
A universal GRB photon energy-peak luminosity relation
(Submitted on 19 Oct 2007)
Abstract: The energetics and emission mechanism of GRBs are not well understood. Here we demonstrate that the instantaneous peak flux or equivalent isotropic peak luminosity, L_iso ergs s^-1, rather than the integrated fluence or equivalent isotropic energy, E_iso ergs, underpins the known high-energy correlations. Using new spectral/temporal parameters calculated for 101 bursts with redshifts from BATSE, BeppoSAX, HETE-II and Swift we describe a parameter space which characterises the apparently diverse properties of the prompt emission. We show that a source frame characteristic-photon-energy/peak luminosity ratio, K_z, can be constructed which is constant within a factor of 2 for all bursts whatever their duration, spectrum, luminosity and the instrumentation used to detect them. The new parameterization embodies the Amati relation but indicates that some correlation between E_peak and E_iso follows as a direct mathematical inference from the Band function and that a simple transformation of E_iso to L_iso yields a universal high energy correlation for GRBs. The existence of K_z indicates that the mechanism responsible for the prompt emission from all GRBs is probably predominantly thermal.
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