Collisionless Shock Heating in Astrophysics: Observations of Shocks in Supernova Remnants and Coronal Mass Ejections.

Details Collisionless Shock Heating in Astrophysics: Observations of Shocks in Supernova Remnants and Coronal Mass Ejections. Collisionless Shock Heating in Astrophysics: Observations of Shocks in Supernova Remnants and Coronal Mass Ejections.

Dec 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003aas...203.3910k&link_type=abstract

American Astronomical Society Meeting 203, #39.10; Bulletin of the American Astronomical Society, Vol. 35, p.1265

Astronomy and Astrophysics

Astrophysics

Scientific paper

The thermal equilibration of species after a collisionless shock passes through an astrophysical plasma is not well understood. The degree of thermal equilibration after the shock is important for the cosmic ray acceleration injection problem and the relative abundances of cosmic ray particles. We have measured the kinetic temperature of oxygen and protons in the collisionless shock of SN1006 and in shocks driven by coronal mass ejections(CMEs).
Using O VI observations of SN1006 made by the FUSE satellite, we have obtained a kinetic temperature for oxygen in the post shock region. A proton temperature from optical observations has been obtained using work by Ghavamian et. al. 2002. CME shocks were examined using data from the ACE satellite. Solar wind shocks, were found to have greater than mass proportional heating of oxygen, Berdichevsky et. al. (1997). We have found a similar result for the shocks of the CMEs. The heliospheric observations are contrary to early shock theory that would have all species sharing heating equally or mass proportionately. The supernova data shows evidence of this preferential heating.
This work is supported by NASA grant NEG5-10352 to the Smithsonian Astrophysical Observatory. Ms. Korreck is supported by the U of Michigan Rackham-NSF Engineering Award.

Affiliated with

Also associated with

No associations

Rating

Collisionless Shock Heating in Astrophysics: Observations of Shocks in Supernova Remnants and Coronal Mass Ejections. 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 Collisionless Shock Heating in Astrophysics: Observations of Shocks in Supernova Remnants and Coronal Mass Ejections., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Collisionless Shock Heating in Astrophysics: Observations of Shocks in Supernova Remnants and Coronal Mass Ejections. will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1419275