Determining the Source of Neutral Helium in the Corona from Spectropolarimetric Observations with SOLARC

Details Determining the Source of Neutral Helium in the Corona from Spectropolarimetric Observations with SOLARC Determining the Source of Neutral Helium in the Corona from Spectropolarimetric Observations with SOLARC

Jan 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aas...21349203c&link_type=abstract

American Astronomical Society, AAS Meeting #213, #492.03; Bulletin of the American Astronomical Society, Vol. 41, p.472

Astronomy and Astrophysics

Astronomy

Scientific paper

On the summit of Haleakala, spectropolarimetic ground observations from the coronagraph of the Scattered-light Observatory for Limb Active Regions and Coronae (SOLARC) and infrared imaging spectropolarimeter detect a spectrally resolved surface brightness flux at the 10830 Å wavelength. The polarization signal indicates scattered light off of He I particles. Under investigation is the origin of this neutral helium. Its presence in the corona could be due to the local interstellar medium (LISM) helium wind (LISW) or a zodiacal dust related "inner source."

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