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Titolo:
Three-dimensional hybrid simulation of solar wind interaction with unmagnetized planets
Autore:
Shimazu, H;
Indirizzi:
Commun Res Lab, Div Space Sci, Koganei, Tokyo 1848795, Japan Commun Res Lab Koganei Tokyo Japan 1848795 Koganei, Tokyo 1848795, Japan
Titolo Testata:
JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
fascicolo: A5, volume: 106, anno: 2001,
pagine: 8333 - 8342
SICI:
0148-0227(20010501)106:A5<8333:THSOSW>2.0.ZU;2-Y
Fonte:
ISI
Lingua:
ENG
Soggetto:
ORBITER MAGNETIC-FIELD; VENUS-LIKE INTERACTION; BOW SHOCK; PLASMA OBSERVATIONS; MHD SIMULATION; ION PICKUP; FLOW PAST; MARS; LOCATION; ASYMMETRIES;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
40
Recensione:
Indirizzi per estratti:
Indirizzo: Shimazu, H Commun Res Lab, Div Space Sci, 4-2-1 Nukui Kita, Koganei, Tokyo1848795, Japan Commun Res Lab 4-2-1 Nukui Kita Koganei Tokyo Japan 1848795pan
Citazione:
H. Shimazu, "Three-dimensional hybrid simulation of solar wind interaction with unmagnetized planets", J GEO R-S P, 106(A5), 2001, pp. 8333-8342

Abstract

The interaction between the solar wind and unmagnetized planets was investigated using computer simulation and a three-dimensional hybrid code that treats kinetic ions and massless fluid electrons. In the simulation the planet was treated as an ionized gaseous body with uniform and constant supply of plasma. The results given in this paper showed that the shock size and magnetic barrier intensity are asymmetrical in the direction of the convection electric field because of oxygen ions escaping from the side of the planet to which the electric field was pointing. The calculated asymmetry in the magnetic barrier intensity was consistent with observations, although thedirection of the calculated asymmetry in the shock size did not match the asymmetry observed near either Venus or Mars. When the planet size was comparable to the Larmor radius of protons, a multiple-shock structure was observed in the simulation. It is suggested that this structure is due to dispersion of the magnetosonic waves caused by the finite Larmor radius of protons. The simulation results also showed that ions escaped to the magnetotailthrough the tail rays and that the tail rays were connected with the plasma sheet.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 20/01/20 alle ore 10:16:52