Morphology of Ca II K bright points and their link to G band bright points

Details Morphology of Ca II K bright points and their link to G band bright points Morphology of Ca II K bright points and their link to G band bright points

Mar 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000basi...28..123k&link_type=abstract

Bulletin of the Astronomical Society of India, Vol. 28, p. 123 (2000)

Astronomy and Astrophysics

Astronomy

Scientific paper

We present the results of a preliminary analysis of a time series of a sequence of Ca II K bright points and G band bright points observed co-spatially and co-temporally. Inspection of these images shows that the larger Ca II K bright points occur between two G band bright points suggesting a loop structure with the top of the loop housing the Ca II K bright point. The velocities of the center of mass of G band pair and that of the corresponding K line bright point seem to be correlated even though these features appear at different heights in the solar atmosphere. The velocity of the K line bright point is estimated to lie between 0.5 km/sec to 5.0km/ sec, while that of G band bright points between 3.0 km/sec and 8.0 km/sec. The diffuse K line brightenings are found to trace out the boundary of photospheric granulation. We estimate the sizes of the cells enclosed by Ca II K brightenings.

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