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Titolo:
Simulation of the heliosphere: Generalized charge-exchange cross sections
Autore:
McNutt, RL; Lyon, J; Goodrich, CC;
Indirizzi:
Johns Hopkins Univ, Appl Phys Lab, Laurel, MD 20723 USA Johns Hopkins Univ Laurel MD USA 20723 ppl Phys Lab, Laurel, MD 20723 USA Dartmouth Coll, Dept Phys & Astron, Hanover, NH 03755 USA Dartmouth Coll Hanover NH USA 03755 Phys & Astron, Hanover, NH 03755 USA Univ Maryland, Dept Astron, College Pk, MD 20742 USA Univ Maryland College Pk MD USA 20742 pt Astron, College Pk, MD 20742 USA
Titolo Testata:
JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
fascicolo: A7, volume: 104, anno: 1999,
pagine: 14803 - 14809
SICI:
0148-0227(19990701)104:A7<14803:SOTHGC>2.0.ZU;2-S
Fonte:
ISI
Lingua:
ENG
Soggetto:
LOCAL INTERSTELLAR-MEDIUM; SOLAR-WIND; H-ATOMS; INTERFACE; SYSTEM; MODEL;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
27
Recensione:
Indirizzi per estratti:
Indirizzo: McNutt, RL Johns Hopkins Univ, Appl Phys Lab, Johns Hopkins Rd, Laurel, MD20723 USA Johns Hopkins Univ Johns Hopkins Rd Laurel MD USA 20723 723 USA
Citazione:
R.L. McNutt et al., "Simulation of the heliosphere: Generalized charge-exchange cross sections", J GEO R-S P, 104(A7), 1999, pp. 14803-14809

Abstract

The interaction of the solar wind with the very local interstellar medium depends strongly on charge exchange between the neutral and ionized hydrogen outside of the heliopause, While the protons are diverted by the heliosphere obstacle, the neutral atomic hydrogen sees no immediate change in environment and continues its free streaming. The ensuing difference in flow velocities results in resonant charge exchange that tends to divert the neutral flow around the heliosphere as well. Large mean free paths strictly require a kinetic approach, yet some idea of the interaction can be gleaned froma much less computationally complex fluid treatment. We show that the momentum- and energy-exchange operators between the charge and neutral fluids can be evaluated in a near-exact fashion for the charge-exchange cross section. This new formulation can be used both to provide a better fluid description and to test how robust the fluid picture is.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 05/12/20 alle ore 12:20:27