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Three-dimensional full-kinetic simulation of the solar wind interaction with a vertical dipolar lunarmagnetic anomaly
Univ Colorado, Lab Atmospher & Space Phys, Boulder, CO 80309 USA.;NASA, Inst Modeling Plasma Atmospheres & Cosm Dust, SSERVI, Boulder, CO 80305 USA.;Univ Versailles St Quentin, Observat Spatiales, Lab Atmospheres, Milieux, Guyancourt, France..
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Swedish Institute of Space Physics, Uppsala Division. St Petersburg State Univ, Dept Phys, St Petersburg 199034, Russia..
Univ Colorado, Lab Atmospher & Space Phys, Boulder, CO 80309 USA.;NASA, Inst Modeling Plasma Atmospheres & Cosm Dust, SSERVI, Boulder, CO 80305 USA..
Univ Versailles St Quentin, Observat Spatiales, Lab Atmospheres, Milieux, Guyancourt, France..
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2016 (English)In: Geophysical Research Letters, ISSN 0094-8276, E-ISSN 1944-8007, Vol. 43, no 9, 4136-4144 p.Article in journal (Refereed) PublishedText
Abstract [en]

A detailed understanding of the solar wind interaction with lunar magnetic anomalies (LMAs) is essential to identify its implications for lunar exploration and to enhance our physical understanding of the particle dynamics in a magnetized plasma. We present the first three-dimensional full-kinetic electromagnetic simulation case study of the solar wind interaction with a vertical dipole, resembling a medium-size LMA. In contrast to a horizontal dipole, we show that a vertical dipole twists its field lines and cannot form a minimagnetosphere. Instead, it creates a ring-shaped weathering pattern and reflects up to 21% (four times more as compared to the horizontal case) of the incoming solar wind ions electrostatically through the normal electric field formed above the electron shielding region surrounding the cusp. This work delivers a vital piece to fully comprehend and interpret lunar observations, as we find the amount of reflected ions to be a tracer for the underlying field structure.

Place, publisher, year, edition, pages
2016. Vol. 43, no 9, 4136-4144 p.
National Category
Astronomy, Astrophysics and Cosmology Meteorology and Atmospheric Sciences
Identifiers
URN: urn:nbn:se:uu:diva-299794DOI: 10.1002/2016GL068535ISI: 000378339200008OAI: oai:DiVA.org:uu-299794DiVA: diva2:950153
Funder
EU, European Research Council, 284461
Available from: 2016-07-28 Created: 2016-07-27 Last updated: 2016-07-28Bibliographically approved

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Swedish Institute of Space Physics, Uppsala Division
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Geophysical Research Letters
Astronomy, Astrophysics and CosmologyMeteorology and Atmospheric Sciences

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