Astronomy and Astrophysics – Astronomy
Scientific paper
Nov 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993pasp..105.1366k&link_type=abstract
Publications of the Astronomical Society of the Pacific, v.105, p.1366
Astronomy and Astrophysics
Astronomy
Scientific paper
We have analysed a large number of Ca II line profiles at the site of the bright points in the interior of the network using a 35-minute long time sequence spectra obtained at hte Vacuum Tower Telesope (VTT) of hte Sacramento Peak Observatory on a quiet region of the solar disc and studied the dynamical processes associated with these structures. Our analysis shows that the profiles can be grouped into three classes in terms of their evolutionary behavior. It is surmised that the differences in their behavior is directly linked with the inner network photospheric magnetic points to which they have been observed to bear a spatial correspondence. The light curves of these bright points give the impression that the"main pulse" which is the upward propagating disturbance carrying energy throws the medium within the bright point into a resonant mode of oscillation that are seen as the follower pulses. The main pulse as well as the follower pulses have identical periods of intensity oscillations, with a mean value around 190 +/- 20 secs. We show that the energy transported by these main pulses at the sits of the bright points over the entire visible solar surface can account for a substantial freedom of the radiative loss from the quiet chromosphere according to current models. (SECTION: Dissertation Summaries)
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