Peak Energy-Isotropic Energy Relation in the Off-Axis Gamma-Ray Burst Model

2004/01/31 by Ryo Yamazaki, Kunihito Ioka, Takashi Nakamura · 3 citations
Engineering · Physics and Astronomy · #CCD and CMOS Imaging Sensors #Gamma-ray bursts and supernovae #Neutrino Physics Research #astro-ph

paper · pdf · doi:10.1086/421084

published as Astrophys.J. 606 (2004) L33-L36 · 11 pages, 2 eps figures

openalex publication_date 2004/04/08 · arxiv created 2004/05/12 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/31

Abstract

Using a simple uniform jet model of prompt emissions of gamma-ray bursts (GRBs), we reproduce the observed peak energy-isotropic energy relation. A Monte Carlo simulation shows that the low isotropic energy part of the relation is dominated by events viewed from off-axis directions, and the number of the off-axis events is about one-third of the on-axis emissions. We also compute the observed event rates of the GRBs, the X-ray-rich GRBs, and the X-ray flashes detected by High Energy Transient Explorer 2 , and we find that they are similar.

Citations

• X-Ray Flashes from Off-Axis Gamma-Ray Bursts
• The Einstein Observatory Detection of Faint X-Ray Flashes
• Peak Luminosity–Spectral Lag Relation Caused by the Viewing Angle of the Collimated Gamma-Ray Bursts
• An Off-Axis Jet Model For GRB 980425 and Low-Energy Gamma-Ray Bursts

Cited by

• The Ep,i-Eiso correlation in gamma-ray bursts: updated observational status, re-analysis and main implications
• Shallow Decay of Early X-Ray Afterglows from Inhomogeneous Gamma-Ray Burst Jets
• Can Gamma‐Ray Bursts Be Used to Measure Cosmology? A Further Analysis