Particle Acceleration in Multiple Dissipation Regions

Details Particle Acceleration in Multiple Dissipation Regions Particle Acceleration in Multiple Dissipation Regions

2004-02-25

arxiv.org/abs/astro-ph/0402605v1

Astrophys.J. 605 (2004) L69-L72

Astronomy and Astrophysics

Astrophysics

12 pages, 5 figures, to appear in ApJL

Scientific paper

10.1086/392506

The sharp magnetic discontinuities which naturally appear in solar magnetic flux tubes driven by turbulent photospheric motions are associated with intense currents. \citet{Par83} proposed that these currents can become unstable to a variety of microscopic processes, with the net result of dramatically enhanced resistivity and heating (nanoflares). The electric fields associated with such ``hot spots'' are also expected to enhance particle acceleration. We test this hypothesis by exact relativistic orbit simulations in strong random phase magnetohydrodynamic (MHD) turbulence which is forming localized super-Dreicer Ohm electric fields ($E_\Omega/E_D$ = $10^2 ... 10^5$) occurring in 2..15 % of the volume. It is found that these fields indeed yield a large amplification of acceleration of electrons and ions, and can effectively overcome the injection problem. We suggest in this article that nanoflare heating will be associated with sporadic particle acceleration.

Affiliated with

Also associated with

No associations

Rating

Particle Acceleration in Multiple Dissipation Regions 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 Particle Acceleration in Multiple Dissipation Regions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Particle Acceleration in Multiple Dissipation Regions will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-129498