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| Titel |
Effects of pickup ions on the lunar plasma environment: 3D hybrid modeling |
| VerfasserIn |
A. S. Lipatov, J. F. Cooper, E. C. Jr. Sittler, R. E. Hartle, M. Sarantos |
| Konferenz |
EGU General Assembly 2012
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 14 (2012) |
| Datensatznummer |
250066377
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| Zusammenfassung |
| The hybrid kinetic model used here supports comprehensive simulation of the interaction
between different spatial and energetic elements of the moon-solar wind-magnetosphere of
the Earth system. There is a set of MHD, kinetic, hybrid, drift kinetic, electrostatic and full
kinetic modeling of the lunar plasma environment [1]. However, observations show the
existence of several species of the neutrals and pickup ions like Na, He, K, O
etc., (see e.g., [2,3,4]). The solar wind parameters are chosen from the ARTEMIS
observations [5]. The O+, Na+, He+ lunar exosphere’s parameters are chosen from
[6,7]. The hybrid kinetic model allows us to take into account the finite gyroradius
effects of pickup ions and to correctly estimate the ions velocity distribution and
the fluxes along the magnetic field, and on the lunar surface. Modeling shows the
formation of the asymmetric Mach cone, the structuring of the pickup ion tails, and
it presents another type of lunar-solar wind interaction. We shall investigate the
effects of wave-particle interactions and a weak conductivity of the lunar core on the
Mach cone structure. We shall compare the results of our modeling with observed
distributions.
References
[1] Lipatov, A.S., and Cooper, J.F., In: Lunar Dust, Plasma and Atmosphere: The Next Steps,
January 27-29, 2010, Boulder, Colorado, Abstracts/lpa2010.colorado.edu/.
[2] Potter, A.E., and Morgan, T.H., Science, 241, 1988.
[3] Tyler, A.L., et al., Geophys. Res. Lett., 15(10), 1141-1144, 1988.
[4] Tanaka, T., et al., Geophys. Res. Lett., 36, L22106, 2009.
[5] Wiehle, S., et al., Planet. Space Sci., Vol. 59(8), 661-671, 2011.
[6] Hartle, R.E., and Killen, R., Geophys. Res. Lett., Vol. 33, L05201, 2006.
[7] Lee, D.-W., et al., J. Geophys. Res., Vol. 116, A07213, 2011. |
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