Early Afterglow, Magnetized Central Engine, and a Quasi-Universal Jet Configuration for Long GRBs

Two separate topics are discussed. (1) We describe the classifications of the long GRB early afterglow lightcurves within the framework of the fireball shock model, focusing on the interplay between the reverse and forward shock emission components. We also provide evidence that the central engine o...

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Bibliographic Details
Main Authors: Zhang, Bing, Kobayashi, Shiho, Meszaros, Peter, Lloyd-Ronning, Nicole M, Dai, Xinyu
Format: Conference Proceeding
Language:English
Online Access:Get full text
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Summary:Two separate topics are discussed. (1) We describe the classifications of the long GRB early afterglow lightcurves within the framework of the fireball shock model, focusing on the interplay between the reverse and forward shock emission components. We also provide evidence that the central engine of at least two bursts are entrained with strong magnetic fields, and discuss the implications of this result for our understanding of the GRB phenomenon; (2) We argue that the current gamma-ray burst (GRB) and X-ray flash (XRF) data are consistent with a picture that all GRB-XRF jets are structured and quasi-universal, with a typical Gaussian-like jet structure.
ISSN:0094-243X
DOI:10.1063/1.1810832