Ruffini 2008 Dyadosphere around a new BH

主要内容:


精彩摘抄:


文章信息:

· Find Similar Abstracts (with default settings below)

· arXiv e-print (arXiv:0810.1438)

· References in the Article

·

· Translate This Page

Title:		Dyadosphere formed in gravitational collapse
Authors:		Ruffini, Remo; Xue, She-Sheng
Publication:		eprint arXiv:0810.1438
Publication Date:		10/2008
Origin:		ARXIV
Keywords:		Astrophysics
Comment:		29 pages and 34 figures; AIP Vol. 1059 (2008) page 72
Bibliographic Code:		2008arXiv0810.1438R

Abstract

We first recall the concept of Dyadosphere (electron-positron-photon plasma around a formed black holes) and its motivation, and recall on (i) the Dirac process: annihilation of electron-positron pairs to photons; (ii) the Breit-Wheeler process: production of electron-positron pairs by photons with the energy larger than electron-positron mass threshold; the Sauter-Euler-Heisenberg effective Lagrangian and rate for the process of electron-positron production in a constant electric field. We present a general formula for the pair-production rate in the semi-classical treatment of quantum mechanical tunneling. We also present in the Quantum Electro-Dynamics framework, the calculations of the Schwinger rate and effective Lagrangian for constant electromagnetic fields. We give a review on the electron-positron plasma oscillation in constant electric fields, and its interaction with photons leading to energy and number equipartition of photons, electrons and positrons. The possibility of creating an overcritical field in astrophysical condition is pointed out. We present the discussions and calculations on (i) energy extraction from gravitational collapse; (ii) the formation of Dyadosphere in gravitational collapsing process, and (iii) its hydrodynamical expansion in Reissner Nordstr\"om geometry. We calculate the spectrum and flux of photon radiation at the point of transparency, and make predictions for short Gamma-Ray Bursts.

---

Bibtex entry for this abstract Preferred format for this abstract (see Preferences)