Electromagnetic signatures of thin accretion disks in wormhole geometries

Simple item page
dc.creatorHarko, Tiberiu
dc.creatorKovács, Zoltán
dc.creatorLobo, Francisco S. N.
dc.date2008-08-25
dc.date2008-09-12
dc.date.accessioned2026-07-07T11:45:37Z
dc.date.available2026-07-07T11:45:37Z
dc.descriptionIn this paper, we study the physical properties and characteristics of matter forming thin accretion disks in static and spherically symmetric wormhole spacetimes. In particular, the time averaged energy flux, the disk temperature and the emission spectra of the accretion disks are obtained for these exotic geometries, and are compared with the Schwarzschild solution. It is shown that more energy is emitted from the disk in a wormhole geometry than in the case of the Schwarzschild potential and the conversion efficiency of the accreted mass into radiation is more than a factor of two higher for the wormholes than for static black holes. These effects in the disk radiation are confirmed in the radial profiles of temperature corresponding to the flux distributions, and in the emission spectrum ωL(ω) of the accretion disks. We conclude that specific signatures appear in the electromagnetic spectrum, thus leading to the possibility of distinguishing wormhole geometries by using astrophysical observations of the emission spectra from accretion disks.
dc.description7 pages, 10 figures. V2: minor changes, references added
dc.identifierhttps://arxiv.org/abs/0808.3306
dc.identifierhttp://arxiv.org/abs/0808.3306
dc.identifierPhys.Rev.D78:084005,2008
dc.identifierdoi:10.1103/PhysRevD.78.084005
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/201937
dc.subjectGeneral Relativity and Quantum Cosmology
dc.subjectAstrophysics
dc.subjectHigh Energy Physics - Theory
dc.titleElectromagnetic signatures of thin accretion disks in wormhole geometries
dc.typetext

Files

Collections

arXiv