Gravitational radiation and angular momentum flux from a slowly rotating dynamical black hole

Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/52903

Title:	Gravitational radiation and angular momentum flux from a slowly rotating dynamical black hole
Authors:	Wu,YH;Wang,CH
Contributors:	物理學系
Keywords:	CONSERVED QUANTITIES;ISOLATED HORIZONS;GENERAL-RELATIVITY;WAVES;MASS
Date:	2011
Issue Date:	2012-06-11 10:49:03 (UTC+8)
Publisher:	國立中央大學
Abstract:	A four-dimensional asymptotic expansion scheme is used to study the next-order effects of the nonlinearity near a spinning dynamical black hole. The angular-momentum flux and energy flux formula are then obtained by constructing the reference frame in terms of the compatible constant spinors and the compatibility of the coupling leading-order Newman-Penrose equations. By using the slow rotation and small-tide approximation for a spinning black hole, the horizon cross-section we chose is spherical symmetric. It turns out the flux formula is rather simple and can be compared with the known results. Directly from the energy flux formula of the slow-rotating dynamical horizon, we find that the physically reasonable condition on requiring the positivity of the gravitational energy flux yields that the shear will monotonically decrease with time. Thus a slow-rotating dynamical horizon will asymptotically approach an isolated horizon during late time.
Relation:	PHYSICAL REVIEW D
Appears in Collections:	[Department of Physics] journal & Dissertation

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