Nonstochastic prompt proton acceleration by fast magnetosonic shocks in the solar plasma
Theoretical and numerical analyses are carried out for plasma heating and proton acceleration (V x B) due to magnetosonic shock waves (MSW) in the solar plasma. A simple model is developed for V x B acceleration by examining a single-particle orbit in a high-amplitude monochromatic electrostatic wave moving in a direction perpendicular to an external magnetic field. The particle can attain the E x B drift velocity. The model is used to derive the maximum velocity a particle can attain when driven by quasi-parallel and quasi-perpendicular MSW. Acceleration is found to be significantly stronger witn the latter, as is demonstrated with results of a 2.5 dimension simulation of acceleration by a quasi-perpendicular MSW. Implications of the results for modeling coronal heating and proton acceleration by MSWs produced by solar flares are discussed. 39 references.
- Research Organization:
- Nagoya Univ., Japan; Toyama Univ., Japan
- OSTI ID:
- 6465271
- Journal Information:
- Astrophys. J.; (United States), Journal Name: Astrophys. J.; (United States) Vol. 313; ISSN ASJOA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ACCELERATION
ATMOSPHERES
BARYONS
ELEMENTARY PARTICLES
FERMIONS
HADRONS
HEATING
HYDROMAGNETIC WAVES
MAGNETOACOUSTIC WAVES
MATHEMATICAL MODELS
NUCLEONS
PROTONS
RADIATIONS
SOLAR ACTIVITY
SOLAR CORONA
SOLAR FLARES
SOLAR PARTICLES
SOLAR PROTONS
SOLAR RADIATION
SOLAR WIND
STAR MODELS
STELLAR ATMOSPHERES
STELLAR CORONAE
STELLAR RADIATION
WAVE PROPAGATION