Comments on Bona-Masso type slicing conditions in long-term black hole evolutions

Astronomy and Astrophysics – Astrophysics – General Relativity and Quantum Cosmology

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

14 pages, LaTex, psfrag

Scientific paper

10.1088/0264-9381/25/7/075007

We review in generality why time-independent endstates can be reached in black hole and collapse simulations, with and without excision. We characterise the Killing states of the Bona-Masso slicing condition with time derivative along the normals to the slice ("BMn") as solutions of a mixed elliptic/hyperbolic differential equation on the slice. We show numerically that these steady states can be reached as end states from typical initial data with excision but can be reached with the puncture method only if the puncture is not numerically well resolved. During the evolution, BMn slicings often form gauge shocks. It may be that these are not seen in current 3D simulations only through lack of resolution, although we expect that they can be avoided with some care. Finally we point out that excision with BMn as currently implemented is ill-posed and therefore not expected to converge; this can be cured. In technical appendixes, we derive the equations of pure gauge systems on a fixed spacetime, and bring the BSSN/NOR equations into 3-dimensional tensor form suitable for multiple coordinate patches or spherical polar coordinates.

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

Rating

Comments on Bona-Masso type slicing conditions in long-term black hole evolutions 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 Comments on Bona-Masso type slicing conditions in long-term black hole evolutions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Comments on Bona-Masso type slicing conditions in long-term black hole evolutions will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-568775

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.