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| Titel |
Energetic Neutral Atoms of Heliospheric Origin Observed by SOHO/CELIAS/HSTOF |
| VerfasserIn |
R. Kallenbach, M. Hilchenbach |
| Konferenz |
EGU General Assembly 2012
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 14 (2012) |
| Datensatznummer |
250063670
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| Zusammenfassung |
| Data from the CELIAS/HSTOF sensor onboard SOHO indicate an enhancement of the H and
the He neutral atom flux at energies of 58-88 keV/amu and of 28-58 keV/amu, respectively, at
heliolongitudes between 80Ë and 100Ë near the heliographic equator. An all-sky image of
neutral atoms at energies larger than 6 keV recorded by the INCA instrument onboard
Cassini revealed that the heliosheath contains a broad belt of energetic protons with a
non-thermal pressure comparable to that of the local interstellar magnetic field. The
belt is centered at about 260Ë ecliptic longitude extending from north to south,
loops back through at about 80Ë ecliptic longitude, and appears to be ordered
by the local interstellar magnetic field. We discuss explanations for the apparent
differences in the observations of SOHO/CELIAS/HSTOF and of Cassini/INCA
in the context of theoretical models on the asymmetric shape of the heliosphere.
Furthermore, we discuss the source of the Anomalous Component of Cosmic Rays on the
basis of combined data from the Voyager, IBEX, Cassini, and SOHO missions. |
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