Work

Perturbations of spacetime around a stationary rotating cosmic string

Year: 2009

Type: article

Abstract: We consider the metric perturbations around a stationary rotating Nambu-Goto string in Minkowski spacetime. By solving the linearized Einstein equations, we study the effects of azimuthal frame-dragging around the rotation axis and linear frame-dragging along the rotation axis, the Newtonian logarithmic potential, and the angular deficit around the string as the potential mode. We also investigate gravitational waves propagating off the string and propagating along the string, and show that the stationary rotating string emits gravitational waves toward the directions specified by discrete angles from the rotation axis. Waveforms, polarizations, and amplitudes which depend on the direction are shown explicitly.

Source: Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields

DOI: 10.1103/physrevd.79.063501

Authors: Kouji Ogawa, Hideki Ishihara, Hiroshi Kozaki, Hiroyuki Nakano

Institutions: Osaka City University, National Institute Of Technology, Ishikawa College, Rochester Institute of Technology

Language: English

Topic: Relativity and Gravitational Theory

Subfield: Astronomy and Astrophysics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funder: National Science Foundation

Awards: Simulations of Black-Hole Binaries with Moving Punctures, MRI: Acquisition of an Advanced Computer Cluster for Computational Relativity and Gravitation, Collaborative Research: XiRel, A Next Generation Infrastructure for Numerical Relativity, Gravitational Waves from Black Hole Binaries