Studies of granular velocities. VII - Granular velocities around sunspots

Details Studies of granular velocities. VII - Granular velocities around sunspots Studies of granular velocities. VII - Granular velocities around sunspots

Dec 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976soph...50..255m&link_type=abstract

Solar Physics, vol. 50, Nov.-Dec. 1976, p. 255-258.

Physics

10

Solar Atmosphere, Solar Granulation, Solar Spectra, Sunspots, Image Intensifiers, Line Spectra, Power Spectra, Spectrum Analysis, Vertical Distribution

Scientific paper

Vertical small-scale velocities deduced from highly resolved spectra in the center of the solar disk, obtained with an image intensifier tube, are discussed. As a main result, it is found that the velocities of small elements (less than 2 arcsec) are remarkably larger in active regions around sunspots than in the quiet sun. In both cases, the velocities decrease with height in the solar atmosphere.

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