Dependence of the correlation of small scale photospheric structures upon resolution

Details Dependence of the correlation of small scale photospheric structures upon resolution Dependence of the correlation of small scale photospheric structures upon resolution

Jun 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979soph...62..241t&link_type=abstract

Solar Physics, vol. 62, June 1979, p. 241-251.

Physics

Line Spectra, Nonuniform Plasmas, Photosphere, Solar Spectra, Correlation, Inhomogeneity, Manganese, Resolution, Spectral Line Width

Scientific paper

Correlations between continuum intensity, velocity, and equivalent widths of two Mn I lines as observed with two different entrance apertures tend to deteriorate with improvement in spatial resolution. The KPNO multichannel magnetograph was used to make area scans at the center of the disk with entrance apertures 3.5 x 2.5 arcsec and 1 x 1 arcsec. A coherence analysis shows that this effect is caused by marked differences of fluctuations in temperature and temperature gradients as well as in the velocity structure of photospheric elements of various sizes.

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