Astronomy and Astrophysics – Astrophysics
Scientific paper
Feb 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991ap%26ss.176...21m&link_type=abstract
Astrophysics and Space Science (ISSN 0004-640X), vol. 176, no. 1, Feb. 1991, p. 21-46.
Astronomy and Astrophysics
Astrophysics
68
Interstellar Matter, Monte Carlo Method, Particle Trajectories, Solar System, Charge Exchange, Gravitational Effects, Interplanetary Medium, Ionization, Magnetohydrodynamics, Radiation Pressure
Scientific paper
The penetration of neutral interstellar H atoms into the solar system is investigated by means of iterative Monte Carlo simulations based on the gasdynamic difference code, plasma flowfields, and interaction-region structure of Baranov et al. (1979) but allowing for resonance charge exchange and ionization processes. The theoretical basis and implementation of the trajectory-splitting model are explained, and typical results are presented in graphs. It is shown that the Monte Carlo approach (but not the gasdynamic equations alone) gives relatively accurate results for realistic values of the interstellar-medium parameters, and that the present trajectory-splitting simulation is several hundred times more efficient than a direct-imitation Monte Carlo method.
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