Astronomy and Astrophysics – Astrophysics
Scientific paper
2003-09-19
Astrophys.J.601:391-404,2004
Astronomy and Astrophysics
Astrophysics
34 pages (5 of 17 figures missing), For full paper, goto http://qso.lanl.gov/~clf/papers/rot.ps.gz accepted by ApJ
Scientific paper
10.1086/380193
In this paper, we present the results of 3-dimensional collapse simulations of rotating stars for a range of stellar progenitors. We find that for the fastest spinning stars, rotation does indeed modify the convection above the proto-neutron star, but it is not fast enough to cause core fragmentation. Similarly, although strong magnetic fields can be produced once the proto-neutron star cools and contracts, the proto-neutron star is not spinning fast enough to generate strong magnetic fields quickly after collapse and, for our simulations, magnetic fields will not dominate the supernova explosion mechanism. Even so, the resulting pulsars for our fastest rotating models may emit enough energy to dominate the total explosion energy of the supernova. However, more recent stellar models predict rotation rates that are much too slow to affect the explosion, but these models are not sophisticated enough to determine whether the most recent, or past, stellar rotation rates are most likely. Thus, we must rely upon observational constraints to determine the true rotation rates of stellar cores just before collapse. We conclude with a discussion of the possible constraints on stellar rotation which we can derive from core-collapse supernovae.
Fryer Chris L.
Warren Michael S.
No associations
LandOfFree
3-Dimensional Core-Collapse 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 3-Dimensional Core-Collapse, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and 3-Dimensional Core-Collapse will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-70059