Shock versus stochastic acceleration of impulsive solar flare protons

Details Shock versus stochastic acceleration of impulsive solar flare protons Shock versus stochastic acceleration of impulsive solar flare protons

Mar 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988soph..115..133s&link_type=abstract

Solar Physics (ISSN 0038-0938), vol. 115, no. 1, 1988, p. 133-148.

Physics

9

Particle Acceleration, Shock Waves, Solar Flares, Solar Protons, Stochastic Processes, Energy Transfer, Gamma Rays, Magnetohydrodynamic Waves, Mass Transfer, Solar Magnetic Field, Turbulence Effects

Scientific paper

The two major candidates for proton acceleration in impulsive γ-ray producing flares, shock and stochastic acceleration, are considered in light of recent observations of mass motions and turbulence in flares. It is concluded that the primary energy release must occur close to the temperature minimum region. It is shown that energy can propagate upwards in the form of fast magnetosonic waves which become evanescent in the transition region, converting a large fraction of their energy to mass motions and turbulence. It is shown that shock acceleration is a viable candidate at velocities slightly higher than present observations. It is also shown that shocks must be driven by a mass of material which would be visible in coronal lines such as Ca XIX for them to be energetically important in proton acceleration. Stochastic acceleration is also examined. It is shown that this is a viable acceleration mechanism within a large range of presently observed turbulence. It is concluded that although present observations favor stochastic acceleration, no definitive conclusion can be made without higher spatial resolution observations and additional theoretical work.

Affiliated with

Also associated with

No associations

Rating

Shock versus stochastic acceleration of impulsive solar flare protons 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 Shock versus stochastic acceleration of impulsive solar flare protons, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Shock versus stochastic acceleration of impulsive solar flare protons will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1693102