Radiative Regimes in Gamma‐Ray Bursts and Afterglows

1997/11/30 by A. Panaitescu, P. Meszaros · 1 citation
Physics and Astronomy · #Afterglow #Astrophysics and Cosmic Phenomena #Coupling (piping) #Ejecta #Electron #Gamma-ray burst #Gamma-ray bursts and supernovae #Magnetic field #Radiative transfer #Solar and Space Plasma Dynamics #astro-ph

paper · pdf · doi:10.1086/305856

published as Astrophys.J. 501 (1998) 772-778 · Latex, 11 pages, 5 figures, accepted by ApJ, revised version, minor changes

arxiv created 1998/02/13 · openalex publication_date 1998/07/10 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

We present numerical simulations of gamma-ray bursts arising from external shocks in the impulsive and wind models, including a weak or a strong coupling between electrons and protons plus magnetic fields, and analyze the burst features in each scenario. We follow the dynamics of the ejecta and external medium into the late stages of deceleration in order to study the hydrodynamics of the remnant and the temporal and spectral evolution of the afterglow. A brief comparison with the optical and radio afterglows of GRB 970228 and GRB 970508 is made.

Citations

• Rings in Fireball Afterglows
• Fluid dynamics of relativistic blast waves
• Viewing Angle and Environment Effects in Gamma‐Ray Bursts: Sources of Afterglow Diversity
• How to Tell a Jet from a Balloon: A Proposed Test for Beaming in Gamma-Ray Bursts
• Optical and Long‐Wavelength Afterglow from Gamma‐Ray Bursts
• Observations and Theoretical Implications of GRB 970228
• Evolution of the Low-Energy Photon Spectra in Gamma-Ray Bursts

Cited by

• Dynamical Evolution, Light Curves, and Spectra of Spherical and Collimated Gamma‐Ray Burst Remnants