Abstract
Observations made at NSO/Sacramento Peak Observatory with the 16″ Coronagraph allow the analysis of fast impulsive events. Broad-band Hα filtergrams and CCD-spectra taken at 1 to 45 arcsec above the solar chromospheric-limb are used. A deep well-developed Coronal Hole was chosen above a Polar Region, during years of minimum of sunspot activity. We present a whole range of impulsive events observed there in 1988. They are tentatively analyzed using statistical methods and the results strongly suggest they could be the source of the fast wind. The recurrence of impulsive events is reported for the first time.
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© 1991 Springer-Verlag Berlin Heidelberg
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Koutchmy, S., Loucif, M.L. (1991). Properties of Impulsive Events in a Polar Coronal Hole. In: Ulmschneider, P., Priest, E.R., Rosner, R. (eds) Mechanisms of Chromospheric and Coronal Heating. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-87455-0_33
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DOI: https://doi.org/10.1007/978-3-642-87455-0_33
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-87457-4
Online ISBN: 978-3-642-87455-0
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