Physics
Scientific paper
Dec 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009agufmsh31b..03f&link_type=abstract
American Geophysical Union, Fall Meeting 2009, abstract #SH31B-03
Physics
[2124] Interplanetary Physics / Heliopause And Solar Wind Termination, [2126] Interplanetary Physics / Heliosphere/Interstellar Medium Interactions, [2151] Interplanetary Physics / Neutral Particles, [2152] Interplanetary Physics / Pickup Ions
Scientific paper
The Interstellar Boundary Explorer (IBEX) has obtained all-sky images of energetic neutral atoms (ENAs) emitted from the heliosheath, located between the termination shock of the solar wind and the local interstellar medium (LISM). The spectral variations over the energy range 0.2-6 keV in the ENA all-sky maps reveal an unexpected new picture of the outer boundary of the heliosphere: 1) spectral features suggesting global ordering by heliospheric latitude, 2) the dominant role played by the non-thermal proton populations, and 3) spatial features in the skymaps produced by variations in the estimated non-thermal ion pressure. The IBEX spectral measurements enable unprecedented insight into the underlying structure and dynamics of the heliosheath.
Allegrini Frederic
Crew Geoff B.
DeMajistre Robert
Frisch Priscilla C.
Funsten Herbert O.
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