Contrast of Coronal Holes and Parameters of Associated Solar Wind Streamsстатья
Информация о цитировании статьи получена из
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Scopus
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Дата последнего поиска статьи во внешних источниках: 12 февраля 2014 г.
Аннотация:It is shown that the contrast of coronal holes, just as their size, determines the
velocity of the solar wind streams. Fully calibrated EIT images of the Sun have been used.
About 450 measurements in 284Å have been analyzed. The time interval under examination
covers about 1500 days in the declining phase of cycle 23. All coronal holes recorded for this
interval in the absence of coronal mass ejections (CMEs) have been studied. The comparison
with some other parameters (e.g. density, temperature, magnetic field) was carried out. The
correlations with the velocity are rather high (0.70 – 0.89), especially during the periods of
moderate activity, and could be used for everyday forecast. The contrast of coronal holes is
rather small.