The variation of the solar granulation structure in active and non-active regions

Details The variation of the solar granulation structure in active and non-active regions The variation of the solar granulation structure in active and non-active regions

Nov 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991a%26a...251..307h&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 251, no. 1, Nov. 1991, p. 307-311. Research supported by FFWF.

Astronomy and Astrophysics

Astrophysics

21

Photosphere, Solar Activity, Solar Granulation, Solar Magnetic Field, Solar Spectra, Solar Wind, Temperature Distribution, Velocity Distribution

Scientific paper

With the aid of a coherence analysis between line-center velocities, continuum-brightness variations and residual intensities the height-dependent evolution of overshooting convective elements in the solar photosphere is studied in magnetically active and nonactive regions. Evidence of a structuring influence of the magnetic field on the height dependent evolution of temperature and velocity patterns is found. From a comparison of intensity and velocity-frequency distributions in nonactive and active regions enhanced downward motions in active regions were found. The results are in agreement with small fluxtube concepts.

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