Collapsar Disks and Winds
- Creators
- MacFadyen, A. I.
- Others:
- Ricker, G. R.
- Vanderspek, R. K.
Abstract
Winds blown from collapsar accretion disks may produce observable stellar explosions independent of any GRB-(and afterglow)-producing jets which may be simultaneously produced. The production of winds is controlled by the accretion disk physics, in particular, the nature of disk cooling via neutrino emission and photo-disintegration of heavy nuclei. These temperature-dependent processes depend on the stellar angular momentum via the depth of the gravitational potential at the Kepler radius where the disk forms. Wind-driven stellar explosions which do not make a GRB (or only a faint one) may occur and constitute a new class of supernova explosion. SN1998bw and 1997ef may be examples. A key feature of collapsar winds is that they are capable of producing the radioactive ^(56)Ni necessary to power a supernova light curve. It is possible to make a GRB in a star without significant production of ^(56)Ni. Such a star would not make an observable supernova and no such component would be expected in the light curve of the optical afterglow.
Additional Information
© 2003 American Institute of Physics. Issue Date: 14 April 2003.Attached Files
Published - MACaipcp03.pdf
Files
Name | Size | Download all |
---|---|---|
md5:91ab9411f1c461530cf4e1dad8ddad70
|
75.4 kB | Preview Download |
Additional details
- Eprint ID
- 27196
- Resolver ID
- CaltechAUTHORS:20111012-133811711
- Created
-
2011-10-13Created from EPrint's datestamp field
- Updated
-
2021-11-09Created from EPrint's last_modified field
- Series Name
- AIP Conference Proceedings
- Series Volume or Issue Number
- 662