The runaway instability in general relativistic accretion discs
2013 (English)In: Monthly notices of the Royal Astronomical Society, ISSN 0035-8711, E-ISSN 1365-2966, Vol. 431, no 1, 349-354 p.Article in journal (Refereed) Published
When an accretion disc falls prey to the runaway instability, a large portion of its mass is devoured by the black hole within a few dynamical times. Despite decades of effort, it is still unclear under what conditions such an instability can occur. The technically most advanced relativistic simulations to date were unable to find a clear sign for the onset of the instability. In this work, we present three-dimensional relativistic hydrodynamics simulations of accretion discs around black holes in dynamical space-time. We focus on the configurations that are expected to be particularly prone to the development of this instability. We demonstrate, for the first time, that the fully self-consistent general relativistic evolution does indeed produce a runaway instability.
Place, publisher, year, edition, pages
2013. Vol. 431, no 1, 349-354 p.
accretion, accretion disks, black hole physics, gravitation, instabilities
Astronomy, Astrophysics and Cosmology
IdentifiersURN: urn:nbn:se:su:diva-90775DOI: 10.1093/mnras/stt166ISI: 000318343600048OAI: oai:DiVA.org:su-90775DiVA: diva2:628702