Beaming Effects in Gamma-Ray Bursts
arXiv:astro-ph/0207609 · doi:10.1007/978-94-017-0403-8_6
Abstract
Based on a refined generic dynamical model, we investigate afterglows from jetted gamma-ray burst (GRB) remnants numerically. In the relativistic phase, the light curve break could marginally be seen. However, an obvious break does exist at the transition from the relativistic phase to the non-relativistic phase, which typically occurs at time 10 to 30 days. It is very interesting that the break is affected by many parameters, especially by the electron energy fraction (xi_e), and the magnetic energy fraction (xi_B^2). Implication of orphan afterglow surveys on GRB beaming is investigated. The possible existence of a kind of cylindrical jets is also discussed.
Minor changes; 10 pages, with 9 eps figures embedded. Talk given at the Sixth Pacific Rim Conference on Stellar Astrophysics (Xi'an, China, July 11-17, 2002). A slightly revised version will appear in the proceedings
References in corpus (5)
- Gamma-ray burst beaming: a universal configuration with a standard energy reservoir?
- A Chandra Survey of Broad Absorption Line Quasars
- Failed gamma-ray bursts and orphan afterglows
- Afterglow Emission from Highly Collimated Jets with Flat Electron Spectra: Application to the GRB 010222 Case?
- Gamma-ray bursts: afterglows from cylindrical jets