| MESSENGER observations of the spatial distribution of planetary ions near Mercury. | |
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MedLine Citation:
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PMID: 21960628 Owner: NLM Status: In-Process |
Abstract/OtherAbstract:
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Global measurements by MESSENGER of the fluxes of heavy ions at Mercury, particularly sodium (Na(+)) and oxygen (O(+)), exhibit distinct maxima in the northern magnetic-cusp region, indicating that polar regions are important sources of Mercury's ionized exosphere, presumably through solar-wind sputtering near the poles. The observed fluxes of helium (He(+)) are more evenly distributed, indicating a more uniform source such as that expected from evaporation from a helium-saturated surface. In some regions near Mercury, especially the nightside equatorial region, the Na(+) pressure can be a substantial fraction of the proton pressure. |
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Authors:
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Thomas H Zurbuchen; Jim M Raines; James A Slavin; Daniel J Gershman; Jason A Gilbert; George Gloeckler; Brian J Anderson; Daniel N Baker; Haje Korth; Stamatios M Krimigis; Menelaos Sarantos; David Schriver; Ralph L McNutt; Sean C Solomon |
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Publication Detail:
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Type: Journal Article; Research Support, U.S. Gov't, Non-P.H.S. |
Journal Detail:
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Title: Science (New York, N.Y.) Volume: 333 ISSN: 1095-9203 ISO Abbreviation: Science Publication Date: 2011 Sep |
Date Detail:
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Created Date: 2011-09-30 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0404511 Medline TA: Science Country: United States |
Other Details:
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Languages: eng Pagination: 1862-5 Citation Subset: IM |
Affiliation:
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Department of Atmospheric, Oceanic and Space Sciences, University of Michigan, Ann Arbor, MI 48109-2143, USA. thomasz@umich.edu |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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