Principal null directions of perturbed black holes
نویسندگان
چکیده
منابع مشابه
Evidence for a null entropy of extremal black holes
We present some arguments in support of a zero entropy for extremal black holes. These relay on a combination of both quantum, thermodynamic, and statistical physics arguments. This result may shed some light on the nature of these extreme objects. In addition, we show that within a quantum framework the capture of a particle by an initially extremal black hole always results with a final nonex...
متن کاملStrength of the null singularity inside black holes
We study analytically the Cauchy horizon singularity inside spherically-symmetric charged black holes, coupled to a spherical self-gravitating, minimally-coupled, massless scalar field. We show that all causal geodesics terminate at the Cauchy horizon at a null singularity, which is weak according to the Tipler classification. The singularity is also deformationally-weak in the sense of Ori. Ou...
متن کاملGravitational Waves from Perturbed Black Holes and Relativistic Stars
These lectures aim at providing an introduction to the properties of gravitational waves and in particular to those gravitational waves that are expected as a consequence of perturbations of black holes and neutron stars. Imprinted in the gravitational radiation emitted by these objects is, in fact, a wealth of physical information. In the case of black holes, a detailed knowledge of the gravit...
متن کاملCauchy-horizon singularity inside perturbed Kerr black holes
Lior M. Burko, Gaurav Khanna, and Anıl Zenginoǧlu School of Science and Technology, Georgia Gwinnett College, Lawrenceville, Georgia 30043, USA Department of Physics, University of Massachusetts, Dartmouth, Massachusetts 02747, USA Center for Scientific Computation and Mathematical Modeling, University of Maryland, College Park, Maryland 20742, USA (Received 4 June 2015; published 9 February 2016)
متن کاملTrapping of waves and null geodesics for rotating black holes
We present dynamical properties of linear waves and null geodesics valid for Kerr and Kerr–de Sitter black holes and their stationary perturbations. The two are intimately linked by the geometric optics approximation. For the nullgeodesic flow the key property is the r-normal hyperbolicity of the trapped set and for linear waves it is the distribution of quasi-normal modes: the exact quantizati...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Classical and Quantum Gravity
سال: 2003
ISSN: 0264-9381,1361-6382
DOI: 10.1088/0264-9381/20/24/001