Statistics – Computation
Scientific paper
Nov 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985a%26a...152l...5r&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 152, no. 1, Nov. 1985, p. L5-L8. Research supported by the Ministero della Pub
Statistics
Computation
8
Electron Beams, Momentum Transfer, Solar Electrons, Solar Flares, Computational Astrophysics, Light Curve, Velocity Distribution
Scientific paper
Numerical experiments were carried out to determine if the momentum deposited by electron beams is significant in the evolution of a solar flare. The Palermo-Harvard numerical model, with its hydrodynamic differential equations of conservation of mass, momentum and energy for a solar magnetic loop, was modified to include thick target heating by nonthermal electrons. The model was used to simulate flares forming 20,000 km loops, both with and without inclusion of beam momentum transfer. The results of the simulation were compared to Ca XIX spectral data for a solar flare event. Inclusion of the momemtum transfer factor caused significant changes in the simulated impulsive phase and in the associated spectral signature. Downward pressure from the electron beam reduced the upward moving velocity by as much as 50 km/sec. The results underscore the necessity of considering electron beam momentum transfer effects in modeling of solar flare events.
Peres Giovanni
Reale Fabio
Serio Salvatore
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