Forgot your password?
ACKS Seminar: Dave Spiegel (Columbia University)
Document Actions
ACKS Seminar: Shizuka Akiyama (KIPAC, Stanford University)
| What | ACKS |
|---|---|
| When |
15 May 08 from 04:00 pm to 05:00 pm |
| Where | SLAC, 3rd Floor KAVLI Conf Room |
| Contact Name | Lukasz Stawarz |
| Contact Email | stawarz@slac.stanford.edu |
| Add event to calendar |
vCal (Windows, Linux)
iCal (Mac OS X)
|
Recipe(s) for Core Collapse Supernovae
One of the most energetic explosion, core collapse supernova, begins with gravitational collapse of a iron core that develops at the end of massive star's life. The central region reaches nuclear density, forms proto neutron star, halts the collapse, and forms outgoing shock wave. The energetic initial shock wave, however, is weakened due to dissociation of about a half solar mass of nucleon, and eventually stalls as an accretion shock. Something else has to cause a successful explosion, which is still widely open issue. Possible mechanisms are via neutrino heating, via acoustic power, or via MHD effects. Since pulsars and magnetars are rotating and magnetized, and they are products of successful explosions, rotation and magnetic fields may be playing a significant role in the explosion mechanism. I will review currently proposed mechanisms of explosion, and discuss the MHD mechanism in detail. In particular, I will argue the importance of the role of the magnetorotational instability in the core collapse environment.
MASS: Doug Applegate