Astronomy and Astrophysics – Astrophysics
Scientific paper
Jun 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986apj...305..909d&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 305, June 15, 1986, p. 909-919.
Astronomy and Astrophysics
Astrophysics
33
Particle Acceleration, Shock Wave Propagation, Solar Electrons, Solar Flares, Solar Protons, Energy Spectra, Interplanetary Medium, Magnetohydrodynamic Waves, Relativistic Particles, Resonance Scattering
Scientific paper
A model for second-phase acceleration in solar flares is presented. It is argued that particles are accelerated by the flare shock wave as it passes through the corona, and that the combined effects of first-order Fermi acceleration at shock waves and second-order Fermi acceleration by resonant scattering off hydromagnetic waves successfully explain the observed interplanetary proton and electron spectra. The model reproduces quantitatively the correlations of nonrelativistic with relativistic electron spectral indices and the correlation of nonrelativistic electrons with proton indices as a function of one parameter, the Alfvenic shock wave Mach number MA. The range in MA needed to fit the observations is 1.1-3.6, indicating shock velocities of 1000-2000 km/s. It is shown that the model allows the acceleration of electrons to tens, and of protons to hundreds, of MeV in times on the order of seconds.
Droege Wolfgang
Schlickeiser Reinhard
No associations
LandOfFree
Particle acceleration in solar flares 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 solar flares, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Particle acceleration in solar flares will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1830337