General relativistic simulations of accretion disks around tilted kerr black holes

Vassilios Mewes, Pedro J. Montero, Nikolaos Stergioulas, Filippo Galeazzi, José A. Font

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations

Abstract

We simulate the dynamics of self-gravitating accretion disks around tilted Kerr black holes (BH) in full 3D general relativity. For this purpose we employ the EinsteinToolkit, using the thorn McLachlan for the evolution of the spacetime via the BSSN formalism of the Einstein equations and the thorn GRHydro for the evolution of the hydrodynamics, using a 3D Cartesian mesh with adaptive mesh refinement. We investigate the effects of the tilt angle between the disk angular momentum and BH spin vector on the dynamics of these systems as the disk evolves in the tilted spacetime. By evolving the spacetime and matter fields, we are able to observe how both BH and disk react and evolve in the tilted configuration. For the very light disk with a constant specific angular momentum profile that we study, we observe a significant change of the disk shape after a few orbits. This change is more pronounced the larger the initial inclination angle is.

Original languageEnglish
Title of host publicationGravitational Wave Astrophysics - Proceedings of the 3rd Session of the Sant Cugat Forum on Astrophysics
EditorsCarlos F. Sopuerta, Carlos F. Sopuerta
PublisherKluwer Academic Publishers
Pages121-127
Number of pages7
ISBN (Electronic)9783319104874, 9783319104874
DOIs
StatePublished - 2015
Externally publishedYes
Event3rd Session of the Sant Cugat Forum on Astrophysics, 2014 - Sant Cugat, Spain
Duration: Apr 22 2014Apr 25 2014

Publication series

NameAstrophysics and Space Science Proceedings
Volume40
ISSN (Print)1570-6591
ISSN (Electronic)1570-6605

Conference

Conference3rd Session of the Sant Cugat Forum on Astrophysics, 2014
Country/TerritorySpain
CitySant Cugat
Period04/22/1404/25/14

Funding

V. Mewes would like to thank Ewald Müller and the MPA for the support during his visit. This work is supported by the Spanish Ministerio de Educación y Ciencia in the project Computational Relativistic Astrophysics (AYA2010-21097-C03-01) and the Deutsche Forschungsgemeinschaft (DFG) through its Transregional Center SFB/TR7. The simulations have been performed on the Hydra HPC system at the Rechenzentrum Garching.

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