Extended Inner Heliospheric Source of Pickup Ions

Details Extended Inner Heliospheric Source of Pickup Ions Extended Inner Heliospheric Source of Pickup Ions

Dec 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008agufm.u12a..03g&link_type=abstract

American Geophysical Union, Fall Meeting 2008, abstract #U12A-03

Physics

1060 Planetary Geochemistry (5405, 5410, 5704, 5709, 6005, 6008), 3672 Planetary Mineralogy And Petrology (5410), 5410 Composition (1060, 3672), 5494 Instruments And Techniques

Scientific paper

The Fast Imaging Plasma Spectrometer (FIPS), the plasma sensor of MESSENGER's Energetic Particle and Plasma Spectrometer, has provided unprecedented insights into the interactions of the solar wind and its inner heliospheric dust component. These novel measurements were taken on the way to and following MESSENGER's first flyby of Mercury in January 2008 and will be repeated during the second flyby in October. In addition to the previously anticipated solar wind components, we find an extended source of singly charged ions, which includes Na, Mg, Si, and Fe. The solar corona can be excluded as a source for these ion components because of the single charge of these ions. Rather, these ions are likely born near the Sun and within the inner heliosphere. We also report on the discovery of an extended source of water-group ions. Our presentation will focus on these new results and their interpretation related to inner heliospheric dust. We will also relate these measurements to pickup ion observations in the extended three-dimensional heliosphere, as measured by the Ulysses Solar Wind Ion Composition Spectrometer.

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