Proton acceleration in a single-loop disrupted during collision of two moving solitary magnetic kinks

Details Proton acceleration in a single-loop disrupted during collision of two moving solitary magnetic kinks Proton acceleration in a single-loop disrupted during collision of two moving solitary magnetic kinks

Oct 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004a%26a...425..333s&link_type=abstract

Astronomy and Astrophysics, v.425, p.333-343 (2004)

Astronomy and Astrophysics

Astrophysics

1

Acceleration Of Particles, Magnetohydrodynamics (Mhd), Plasmas, Sun: Flares

Scientific paper

We investigate a new model of single-loop flare based on the fact that a magnetic flux tube with axial current can be explosively disrupted during collision of two moving solitary magnetic kinks (MoSMaK), particularly paying attention to an acceleration mechanism of high energy protons. By using three-dimensional electromagnetic fields obtained from a resistive three-dimensional MHD equations during the single-loop flare, we investigate the orbit of many protons to obtain their energy spectra. We found that the protons can be accelerated to γ-ray-emitting energies (>1 MeV) with double power-law spectra up to about 25 MeV. There appears a breaking point of the index of the power-law spectra from 1.8 to 2.1 near 10 MeV. The protons are accelerated mainly in one direction along the loop by the electric field produced near the three-dimensional localized current associated with the magnetic reconnection process in the disrupted loop. We study the loop disruption for two different plasma beta in the center of the loop; β=0.5 and β=0.05. In a high beta case (β=0.5), the disruption of the loop is more violent than that of β=0.05. We found that the proton acceleration for the case of β=0.5 occurs mainly at two different regions; one is inside the loop and the other is in the upper part of the disrupting loop. However, the energy spectra of protons are very similar for both cases.

Affiliated with

Also associated with

No associations

Rating

Proton acceleration in a single-loop disrupted during collision of two moving solitary magnetic kinks 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 Proton acceleration in a single-loop disrupted during collision of two moving solitary magnetic kinks, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Proton acceleration in a single-loop disrupted during collision of two moving solitary magnetic kinks will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-894949