Astronomy and Astrophysics – Astronomy
Scientific paper
May 1997
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997spd....28.0105b&link_type=abstract
American Astronomical Society, SPD meeting #28, #01.05; Bulletin of the American Astronomical Society, Vol. 29, p.880
Astronomy and Astrophysics
Astronomy
Scientific paper
The Ca II K spectral line serves as a diagnostic for plasma properties, activity levels and magnetic influence of the chromosphere in the Sun and stars. Traditionally, the K line exhibits a double reversal with well identified spectral features, K1, K2 and K3. This research note presents observations to show that the K line exhibits multiple spectral reversals in addition to the well known features. These multiple reversals are seen only at high spatial and spectral resolution, in solar active regions. The locations of these multiple reversals are cospatial with local H-alpha brightenings that appear at foot-points of dark active region H-alpha fibrils (or active region filaments). The magnetic field structure at the photosphere at the spatial locations where these multiple reversals are observed, are either bipoles (small opposite polarity magnetic nodules) or neutral lines. A compendium of Ca II K spectral lines are presented to demonstrate the nature of these these multiple reversals.
No associations
LandOfFree
Multiple Reversals in CA II K Profiles does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Multiple Reversals in CA II K Profiles, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multiple Reversals in CA II K Profiles will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1146468