Astronomy and Astrophysics – Astrophysics
Scientific paper
Jun 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001iscs.symp...59m&link_type=abstract
ISCS 2001 Symposium: Solar Variability, Climate, and Space Weather. Longmont, Colorado, USA, p. 59.
Astronomy and Astrophysics
Astrophysics
Scientific paper
UVCS/SOHO measurements of H I Ly-alpha and O VI (103.2 nm and 103.7 nm) intensities in the solar corona have been made from solar Cycle 23's minimum in 1996 to its current maximum. At solar minimum, the corona consisted of large coronal holes at the poles and quiescent streamers at the equator. During the approach to solar maximum, equatorial coronal holes and high latitude streamers became more conspicuous. Recently, coronal holes at higher latitudes have reappeared, allowing a comparison to be made of O VI intensities and line widths of coronal holes at different latitudes. We also characterize the variation of coronal hole properties with height, and location over the solar cycle. This work is supported by NASA under Grant NAG5-10093 to the Smithsonian Astrophysical Observatory, by the Italian Space Agency and by PRODEX (Swiss contribution)
Cranmer Steven R.
Gardner Larry D.
Kohl John L.
Miralles Mari Paz
Panasyuk Alexander V.
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