The interpretation of center-limb profiles of weak Fraunhofer lines

Details The interpretation of center-limb profiles of weak Fraunhofer lines The interpretation of center-limb profiles of weak Fraunhofer lines

Jun 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981azh....58..604k&link_type=abstract

Astronomicheskii Zhurnal, vol. 58, May-June 1981, p. 604-609. In Russian.

Astronomy and Astrophysics

Astronomy

2

Fraunhofer Lines, Photosphere, Solar Atmosphere, Solar Spectra, Asymmetry, Convection

Scientific paper

Profiles of weak Fraunhofer lines have been analyzed under the assumption that nonthermal broadening and asymmetry of the lines are caused by wave and convective motions. A comparison of computed and observed line profiles shows that a horizontal flow with a velocity of 2.7 km/s exists on the major part of the sun's surface. The upflow velocity is 0.9 km/s, and the granule-intergranule temperature difference is about 330 K.

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