Marginally trapped tubes and dynamical horizons

Details Marginally trapped tubes and dynamical horizons Marginally trapped tubes and dynamical horizons

2005-06-24

arxiv.org/abs/gr-qc/0506119v2

Class.Quant.Grav. 23 (2006) 413-440

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

31 pages, many figures. Final Version to appear in CQG: improvements include more complete references, a discussion of those r

Scientific paper

10.1088/0264-9381/23/2/009

We investigate the generic behaviour of marginally trapped tubes (roughly time-evolved apparent horizons) using simple, spherically symmetric examples of dust and scalar field collapse/accretion onto pre-existing black holes. We find that given appropriate physical conditions the evolution of the marginally trapped tube may be either null, timelike, or spacelike and further that the marginally trapped two-sphere cross-sections may either expand or contract in area. Spacelike expansions occur when the matter falling into a black hole satisfies $\rho - P \leq 1/A$, where $A$ is the area of the horizon while $\rho$ and $P$ are respectively the density and pressure of the matter. Timelike evolutions occur when $(\rho - P)$ is greater than this cut-off and so would be expected to be more common for large black holes. Physically they correspond to horizon "jumps" as extreme conditions force the formation of new horizons outside of the old.

Affiliated with

Also associated with

No associations

Rating

Marginally trapped tubes and dynamical horizons does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Marginally trapped tubes and dynamical horizons, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Marginally trapped tubes and dynamical horizons will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-581427