The interaction between the Moon and the solar wind
Document identifier: oai:DiVA.org:ltu-7795
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10.5047/eps.2011.06.040Keyword: Engineering and Technology,
Mechanical Engineering,
Aerospace Engineering,
Teknik och teknologier,
Maskinteknik,
Rymd- och flygteknikPublication year: 2012Abstract: We study the interaction between the Moon and the solar wind using a three-dimensional hybrid plasma solver. The proton fluxes and electromagnetical fields are presented for typical solar wind conditions with different magnetic field directions. We find two different wake structures for an interplanetary magnetic field that is perpendicular to the solar wind flow, and for one that is parallell to the flow. The wake for intermediate magnetic field directions will be a mix of these two extreme conditions. Several features are consistent with a fluid interaction, e.g., the presence of a rarefaction cone, and an increased magnetic field in the wake. There are however several kinetic features of the interaction. We find kinks in the magnetic field at the wake boundary. There are also density and magnetic field variations in the far wake, maybe from an ion beam instability related to the wake refill. The results are compared to observations by the WIND spacecraft during a wake crossing. The model magnetic field and ion velocities are in agreement with the measurements. The density and the electron temperature in the central wake are not as well captured by the model, probably from the lack of electron physics in the hybrid model.
Authors
Mats Holmström
Swedish Institute of Space Physics / Institutet för rymdfysik
Other publications
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Shahab Fatemi
Other publications
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Yoshifumi Futaana
Swedish Institute of Space Physics / Institutet för rymdfysik
Other publications
>>
Hans Nilsson
Swedish Institute of Space Physics / Institutet för rymdfysik
Other publications
>>
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identifier: oai:DiVA.org:ltu-7795
datestamp: 2021-04-19T12:41:33Z
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http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-7795
10.5047/eps.2011.06.040
637594b6-4571-413b-a455-6e6a40559c5b
titleInfo:
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lang: eng
title: The interaction between the Moon and the solar wind
abstract: We study the interaction between the Moon and the solar wind using a three-dimensional hybrid plasma solver. The proton fluxes and electromagnetical fields are presented for typical solar wind conditions with different magnetic field directions. We find two different wake structures for an interplanetary magnetic field that is perpendicular to the solar wind flow and for one that is parallell to the flow. The wake for intermediate magnetic field directions will be a mix of these two extreme conditions. Several features are consistent with a fluid interaction e.g. the presence of a rarefaction cone and an increased magnetic field in the wake. There are however several kinetic features of the interaction. We find kinks in the magnetic field at the wake boundary. There are also density and magnetic field variations in the far wake maybe from an ion beam instability related to the wake refill. The results are compared to observations by the WIND spacecraft during a wake crossing. The model magnetic field and ion velocities are in agreement with the measurements. The density and the electron temperature in the central wake are not as well captured by the model probably from the lack of electron physics in the hybrid model.
subject:
@attributes:
lang: eng
authority: uka.se
topic:
Engineering and Technology
Mechanical Engineering
Aerospace Engineering
@attributes:
lang: swe
authority: uka.se
topic:
Teknik och teknologier
Maskinteknik
Rymd- och flygteknik
language:
languageTerm: eng
genre:
publication/journal-article
ref
note:
Published
4
Upprättat; 2012; 20140320 (shafat)
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Holmström
Mats
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affiliation: Swedish Institute of Space Physics / Institutet för rymdfysik
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Fatemi
Shahab
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shafat
0000-0002-9450-6672
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namePart:
Futaana
Yoshifumi
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affiliation: Swedish Institute of Space Physics / Institutet för rymdfysik
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Nilsson
Hans
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roleTerm: aut
affiliation: Swedish Institute of Space Physics / Institutet för rymdfysik
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dateIssued: 2012
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titleInfo:
title: Earth Planets and Space
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1343-8832
1880-5981
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number: 64
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type: issue
number: 2
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