Astronomy and Astrophysics – Astrophysics
Scientific paper
Sep 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aipc..858..282c&link_type=abstract
PHYSICS OF THE INNER HELIOSHEATH: Voyager Observations, Theory, and Future Prospects; 5th Annual IGPP International Astrophysics
Astronomy and Astrophysics
Astrophysics
Heliopause And Solar Wind Termination, Energetic Particles, Neutral Particles
Scientific paper
Remote observation of the low energy end (up to few 100 keV) of the energetic ion spectrum in the heliosheath is possible by using the energetic neutral atoms (ENA) coming from neutralization of those ions. The ENA of possibly heliosheath origin were first detected by HSTOF/CELIAS on SOHO. Until recently, the interpretation of these data was difficult, because of large uncertainties concerning the ion spectrum in the heliosheath and in the heliosphere. In particular, this applied to the low energy anomalous cosmic ray ions, which cannot penetrate into the inner heliosphere. After the Voyager 1 crossing of the termination shock it become possible to compare the results deduced from the ENA observations to the ion spectra measured in situ. We show how the observations of the heliosheath ENA supplement Voyager 1 measurements by providing information about the regions of the heliosheath away from the Voyager trajectory.
Czechowski Andrzej
Hilchenbach Martin
Hsieh K. C.
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