Plasma acceleration above Martian magnetic anomalies

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dc.contributor.author Winningham, D.
dc.contributor.author Grande, Manuel
dc.contributor.author Lundin, R.
dc.contributor.author Barabash, S.
dc.date.accessioned 2008-12-04T09:52:35Z
dc.date.available 2008-12-04T09:52:35Z
dc.date.issued 2006
dc.identifier.citation Winningham , D , Grande , M , Lundin , R & Barabash , S 2006 , ' Plasma acceleration above Martian magnetic anomalies ' Science , vol 311 , pp. 980-983 . en
dc.identifier.issn 0036-8075
dc.identifier.other PURE: 90005
dc.identifier.other dspace: 2160/1334
dc.identifier.uri http://hdl.handle.net/2160/1334
dc.identifier.uri http://www.sciencemag.org/cgi/content/abstract/311/5763/980 en
dc.description Grande, Manuel, et al., 'Plasma acceleration above Martian magnetic anomalies', Science (2006) 311(5763) pp.980-983 RAE2008 en
dc.description.abstract Auroras are caused by accelerated charged particles precipitating along magnetic field lines into a planetary atmosphere, the auroral brightness being roughly proportional to the precipitating particle energy flux. The Analyzer of Space Plasma and Energetic Atoms experiment on the Mars Express spacecraft has made a detailed study of acceleration processes on the nightside of Mars. We observed accelerated electrons and ions in the deep nightside high-altitude region of Mars that map geographically to interface/cleft regions associated with martian crustal magnetization regions. By integrating electron and ion acceleration energy down to the upper atmosphere, we saw energy fluxes in the range of 1 to 50 milliwatts per square meter per second. These conditions are similar to those producing bright discrete auroras above Earth. Discrete auroras at Mars are therefore expected to be associated with plasma acceleration in diverging magnetic flux tubes above crustal magnetization regions, the auroras being distributed geographically in a complex pattern by the many multipole magnetic field lines extending into space. en
dc.format.extent 4 en
dc.language.iso eng
dc.relation.ispartof Science en
dc.title Plasma acceleration above Martian magnetic anomalies en
dc.type Text en
dc.type.publicationtype Article (Journal) en
dc.identifier.doi http://dx.doi.org/10.1126/science.1122071
dc.contributor.institution Institute of Mathematics & Physics (ADT) en
dc.contributor.institution Mathematics and Physics en
dc.description.status Peer reviewed en


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