Extragalactic High-energy Transients: Event Rate Densities and Luminosity Functions
Document Type
Article
Publication Date
10-6-2015
Publication Title
The Astrophysical Journal
Volume
812
Issue
1
First page number:
33
Abstract
Several types of extragalactic high-energy transients have been discovered, which include high-luminosity and low-luminosity long-duration gamma-ray bursts (GRBs), short-duration GRBs, supernova shock breakouts (SBOs), and tidal disruption events (TDEs) without or with an associated relativistic jet. In this paper, we apply a unified method to systematically study the redshift-dependent event rate densities and the global luminosity functions (GLFs; ignoring redshift evolution) of these transients. We introduce some empirical formulae for the redshift-dependent event rate densities for different types of transients and derive the local specific event rate density, which also represents its GLF. Long GRBs (LGRBs) have a large enough sample to reveal features in the GLF, which is best charaterized as a triple power law (PL). All the other transients are consistent with having a single-power-law (SPL) LF.
Disciplines
Astrophysics and Astronomy
Repository Citation
Sun, H.,
Zhang, B.,
Li, Z.
(2015).
Extragalactic High-energy Transients: Event Rate Densities and Luminosity Functions.
The Astrophysical Journal, 812(1),
33.
http://dx.doi.org/10.1088/0004-637x/812/1/33
