Introduction to dynamical horizons in numerical relativity

Details Introduction to dynamical horizons in numerical relativity Introduction to dynamical horizons in numerical relativity

2006-04-04

arxiv.org/abs/gr-qc/0604015v2

Phys.Rev. D74 (2006) 024028

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

20 pages, 16 figures, revtex4. Several smaller changes, some didactic content shortened

Scientific paper

10.1103/PhysRevD.74.024028

This paper presents a quasi-local method of studying the physics of dynamical black holes in numerical simulations. This is done within the dynamical horizon framework, which extends the earlier work on isolated horizons to time-dependent situations. In particular: (i) We locate various kinds of marginal surfaces and study their time evolution. An important ingredient is the calculation of the signature of the horizon, which can be either spacelike, timelike, or null. (ii) We generalize the calculation of the black hole mass and angular momentum, which were previously defined for axisymmetric isolated horizons to dynamical situations. (iii) We calculate the source multipole moments of the black hole which can be used to verify that the black hole settles down to a Kerr solution. (iv) We also study the fluxes of energy crossing the horizon, which describes how a black hole grows as it accretes matter and/or radiation. We describe our numerical implementation of these concepts and apply them to three specific test cases, namely, the axisymmetric head-on collision of two black holes, the axisymmetric collapse of a neutron star, and a non-axisymmetric black hole collision with non-zero initial orbital angular momentum.

Affiliated with

Also associated with

No associations

Rating

Introduction to dynamical horizons in numerical relativity 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 Introduction to dynamical horizons in numerical relativity, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Introduction to dynamical horizons in numerical relativity will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-418480