The Day the Solar Wind (Almost) Disappeared: Refraction and Dissipation

Details The Day the Solar Wind (Almost) Disappeared: Refraction and Dissipation The Day the Solar Wind (Almost) Disappeared: Refraction and Dissipation

May 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001agusm..sp61a01m&link_type=abstract

American Geophysical Union, Spring Meeting 2001, abstract #SP61A-01

Physics

2149 Mhd Waves And Turbulence, 2164 Solar Wind Plasma

Scientific paper

On May 11, 1999 the ACE spacecraft spent several hours in an unusually rarefied parcel of solar wind. During this rarefaction interval, the Alfven speed was exceptionally high while the ion temperature was low. These properties provide a rare opportunity to examine two distinct physical processes that operate in the solar wind. First, refraction of MHD waves: fast-mode waves are excluded from the rarefied parcel, but Alfven waves are not affected. Second, dissipation of magnetic fluctuations: when ACE is in the rarefaction interval, the location of dissipation onset in the magnetic power spectrum shifts towards a distinctly lower frequency. The direction of this shift is consistent with dissipation processes that operate at the ion inertial length-scale. But the observed shift in dissipation frequency is not compatible with the widely discussed mechanism of ion cyclotron resonance.

Affiliated with

Also associated with

No associations

Rating

The Day the Solar Wind (Almost) Disappeared: Refraction and Dissipation 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 The Day the Solar Wind (Almost) Disappeared: Refraction and Dissipation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Day the Solar Wind (Almost) Disappeared: Refraction and Dissipation will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1279594