New theoretical approaches to black holes

✍ Scribed by Eric Gourgoulhon; José Luis Jaramillo

• Publisher: Elsevier Science
• Year: 2008
• Tongue: English
• Weight: 243 KB
• Volume: 51
• Category: Article
• ISSN: 1387-6473
• DOI: 10.1016/j.newar.2008.03.026

✦ Synopsis

Quite recently, some new mathematical approaches to black holes have appeared in the literature. They do not rely on the classical concept of event horizon-which is very global, but on the local concept of hypersurfaces foliated by trapped surfaces. After a brief introduction to these new horizons, we focus on a viscous fluid analogy that can be developed to describe their dynamics, in a fashion similar to the membrane paradigm introduced for event horizons in the seventies, but with a significant change of sign of the bulk viscosity.