✦ LIBER ✦

Dependence of the correlation of small scale photospheric structures upon resolution

✍ Scribed by R. G. Teske; G. H. Elste

Publisher: Springer
Year: 1979
Tongue: English
Weight: 596 KB
Volume: 62
Category: Article
ISSN: 0038-0938
DOI: 10.1007/bf00155356

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✦ Synopsis

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 muitichannel magnetograph was used to make area scans at the center of the disk with entrance apertures 3.5" • 2.5" arc and 1" • 1" arc. 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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