Energetic Neutral Atoms from the Heliotail Direction and their Potential Source Regions

Details Energetic Neutral Atoms from the Heliotail Direction and their Potential Source Regions Energetic Neutral Atoms from the Heliotail Direction and their Potential Source Regions

Dec 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aipc.1302...86h&link_type=abstract

PICKUP IONS THROUGHOUT THE HELIOSPHERE AND BEYOND: Proceedings of the 9th Annual International Astrophysics Conference. AIP Con

Astronomy and Astrophysics

Astrophysics

Solar Wind, Pickups, Solar Activity, Heliopause And Solar Wind Termination, Pickup Ions, Solar Activity

Scientific paper

The particle instrument CELIAS/HSTOF onboard SOHO is observing the energetic neutral atom (ENA) flux in the ecliptic plane since 1996. During quiet time periods, the ENA flux is well separated from the energetic ion flux, originating in the solar corona and/ or heliosphere. The instrument is capable to measure the energetic neutral hydrogen (ENH) and helium (ENHe) fluxes along the line-of-sight of the instrument field-of-view. We will discuss the neutral energetic flux measurements of hydrogen and helium in the 28 to 88 keV/n energy/mass range of CELIAS/HSTOF, focusing on the frequently increased fluxes from the tail direction of the heliosphere. Potential source regions might be co-rotating interaction regions (CIRs) and the helium cone in the inner heliosphere, solar energetic particle events, accelerated pick-up ions in the outer heliosphere and energetic neutral particles originating from the heliosheath region and beyond.

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