Astronomy and Astrophysics – Astrophysics
Scientific paper
Nov 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009a%26a...507..469s&link_type=abstract
Astronomy and Astrophysics, Volume 507, Issue 1, 2009, pp.469-480
Astronomy and Astrophysics
Astrophysics
Sun: Corona, Sun: Particle Emission, Sun: Coronal Mass Ejections (Cmes)
Scientific paper
We present a novel explanation for the ^3He-rich solar energetic particle events. We suggest that at low latitudes the coronal magnetic field is largely closed out to several solar radii. Quasi-continuous magnetic reconnection provides conditions suitable for resonant acceleration of ^3He which essentially accelerates all the ambient ions up to energies around 1 MeV/nucleon, which are largely trapped in the closed field. Electrons are also accelerated together with a relatively small number of ions which also satisfy the resonance condition. Ultra-heavy ions may also be accelerated, although details of how this is achieved are not known at this time. Reconnection in the outer region of the closed magnetic field injects the trapped particles from time to time into the interplanetary medium as impulsive events, while leakage provides a dribble of ions into the interplanetary medium, to provide the quiet time background. The trapped ions may also be seed particles for acceleration in a chromospheric flare. The flare acceleration does not preferentially accelerate ^3He nor ultra-heavy ions.
No associations
LandOfFree
On the timescale and location of ^3He acceleration 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 On the timescale and location of ^3He acceleration, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and On the timescale and location of ^3He acceleration will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1535238