Physics
Scientific paper
Dec 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009agufmsh31b..07k&link_type=abstract
American Geophysical Union, Fall Meeting 2009, abstract #SH31B-07
Physics
[2114] Interplanetary Physics / Energetic Particles, [2126] Interplanetary Physics / Heliosphere/Interstellar Medium Interactions, [2151] Interplanetary Physics / Neutral Particles, [2152] Interplanetary Physics / Pickup Ions
Scientific paper
The Ion and Neutral Camera (INCA), part of the Magnetospheric Imaging Instrument (MIMI) sensor suite on the Cassini orbiter at Saturn, is an energetic neutral atom (ENA) imager designed to obtain measurements of magnetospheric phenomena and has done so for more than five years. When not pointing at the planet, INCA can sense ENA from other sources, notably those traversing the interplanetary medium from the heliosheath. Maps of such emissions have now been constructed spanning the energy range ~ 6 ≤ E ≤ 55 keV. These maps, on the main, do not conform with standard models of expected shape of the heliosphere. The distributions of the emissions are clearly influenced by factors over and above those estimated from the flow of interstellar plasma. Spectra of the ENA-deduced proton populations in the heliosheath will be presented and compared with in situ measurements of the Voyager 1 and 2 spacecraft.
Hsieh Ken
Krimigis Stamatios M.
McComas David John
Mitchell Donald G.
Roelof Edmond C.
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