Bulletin of the American Physical Society
2005 47th Annual Meeting of the Division of Plasma Physics
Monday–Friday, October 24–28, 2005; Denver, Colorado
Session RI1a: Tutorial: Supernovae and Gamma-Ray Bursts: Relativistic Plasma Physics in the Einstein Centennial |
Hide Abstracts |
Chair: Wendel Horton, University of Texas, Austin Room: Adam's Mark Hotel Plaza Ballroom ABC |
Thursday, October 27, 2005 2:00PM - 3:00PM |
RI1a.00001: Supernovae and Gamma-Ray Bursts: Relativistic Plasma Physics in the Einstein Centennial Invited Speaker: Study of core collapse supernova with spectropolarimetry has shown that all these events are substantially asymmetric and frequently bi-polar. This argues for a role for rotation, shearing, and strong dynamos leading to jet-like flow to shape and perhaps even power the explosion. Long (several second) cosmic gamma-ray bursts have been directly linked to some core collapse supernovae. Gamma-ray bursts have been established to be caused by narrow jets of energy containing magnetic fields and moving at highly relativistic speeds that first undergo internal shocks to cause the gamma-ray burst, but then collide with the circumburst and interstellar medium to cause the ``afterglow'' in X-rays, optical, and radio. The most likely explanation of the long gamma-ray bursts is the collapse of a massive, rotating, magnetic star to form a black hole, but rapidly rotating, highly magnetic neutron stars cannot yet be ruled out. Oustanding issues are the physics that converts the implosion of the stellar core into an explosion, the role of dynamos and MHD processes in causing the explosion, the processes by which jets are formed and propagate out of the star, the circumstances under which those jets become highly relativistic, and the origin and evolution of the magnetic field associated with the burst and afterglow. [Preview Abstract] |
Follow Us |
Engage
Become an APS Member |
My APS
Renew Membership |
Information for |
About APSThe American Physical Society (APS) is a non-profit membership organization working to advance the knowledge of physics. |
© 2024 American Physical Society
| All rights reserved | Terms of Use
| Contact Us
Headquarters
1 Physics Ellipse, College Park, MD 20740-3844
(301) 209-3200
Editorial Office
100 Motor Pkwy, Suite 110, Hauppauge, NY 11788
(631) 591-4000
Office of Public Affairs
529 14th St NW, Suite 1050, Washington, D.C. 20045-2001
(202) 662-8700