Fiziev 2009 一个简单的旋转致密天体产生GRB jet的模型

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Title:		Toward a New Model of the Central Engine of GRB
Authors:		Fiziev, P. P.; Staicova, D. R.
Publication:		eprint arXiv:0902.2411
Publication Date:		02/2009
Origin:		ARXIV
Keywords:		Astrophysics - High Energy Astrophysical Phenomena
Comment:		7 pages, 1 figure, based on a talk given at the Fourth Aegean Summer School, 17-22 September 2007, Lesvos, Greece
Bibliographic Code:		2009arXiv0902.2411F

Abstract

We present new developments of the simple model of the central engine of GRB, proposed recently. The model is based on minimal assumptions: some rotating compact relativistic object at the center and stable perturbations of its rotating gravitational field, described by Teukolsky Master Equation. We show that using nonstandard polynomial solutions to the angular Teukolsky equation we can describe the formation of collimated jets of various forms. Appearance of imaginary part of the superradiance-like frequency is established for the first time for pure vacuum black hole jet solutions of Teukolsky equation.

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Title:		A new model of the Central Engine of GRB and the Cosmic Jets
Authors:		Fiziev, P. P.; Staicova, D. R.
Publication:		eprint arXiv:0902.2408
Publication Date:		02/2009
Origin:		ARXIV
Keywords:		Astrophysics - High Energy Astrophysical Phenomena
Comment:		6 pages, 1 figures, Based on talk given at The Advanced Workshop on Gravity, Astrophysics and Strings, GAS@BS07, 10-16.06.2007, Primorsko, Bulgaria
Bibliographic Code:		2009arXiv0902.2408F

Abstract

Despite all the already existing observational data, current models still cannot explain completely the excessive energy output and the time variability of GRB. One of the reasons for this is the lack of a good model of the central engine of GRB. A major problem in the proposed models with a black hole (BH) in the center is that they don't explain the observed evidences of late time activity of the central engine. In this paper we are starting the search for a possible model of that central engine as a rotating compact body of still unknown nature. The formation of jets in the new model lies entirely on the fundamental Teukolsky Master Equation. We demonstrate that this general model can describe the formation of collimated GRB-jets of various forms. Some preliminary results are presented.

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