ar X iv : g r - qc / 0 21 10 17 v 2 5 M ar 2 00 3 On general Plane Fronted Waves . Geodesics

ar X iv : g r - qc / 0 41 21 17 v 1 2 3 D ec 2 00 4 A quantum mass - spectrum of Kerr black hole : superstrings

Using thermal quantization of geodesics confined under horizons and reasonable conjecture on massless modes, we evaluate quantum spectrum of Kerr black hole masses compatible with superstring symmetries.

ar X iv : g r - qc / 0 21 00 36 v 1 1 1 O ct 2 00 2 LINKING , LEGENDRIAN LINKING AND CAUSALITY

The set N of all null geodesics of a globally hyperbolic (d + 1)-dimensional spacetime (M, g) is naturally a smooth (2d − 1)-dimensional contact manifold. The sky of an event x ∈ M is the subset X = {γ ∈ N : x ∈ γ} ⊂ N and is an embedded Legendrian submanifold of N diffeomorphic to S d−1. It was conjectured by Low that for d = 2 events x, y ∈ M are causally related iff X, Y ⊂ N are linked (in a...

ar X iv : g r - qc / 0 20 30 83 v 1 2 4 M ar 2 00 2 A Geometrical Anisotropic Model of Space - time Based on Finslerian Metric

In this work we study an anisotropic model of general relativity based on the framework of Finsler geometry. The observed anisotropy of the microwave background radiation [8] is incorporated in the Finslerian structure of space-time. We also examine the electromagnetic (e.m.) field equations in our space. As a result a modified wave equation of e.m. waves yields.

ar X iv : g r - qc / 0 51 01 27 v 1 3 1 O ct 2 00 5 Imprints of Spacetime Topology in the Hawking - Unruh Effect

ar X iv : g r - qc / 0 51 11 52 v 1 2 9 N ov 2 00 5 Recent results on the search for continuous sources with LIGO and GEO 600 Alicia

An overview of the searches for continuous gravitational wave signals in LIGO and GEO 600 performed on different recent science runs and results are presented. This includes both searching for gravitational waves from known pulsars as well as blind searches over a wide parameter space.