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On the interpretation of some peculiarities observed in zeeman-split line contours in sunspots

✍ Scribed by Jürgen Staude

Publisher
Springer
Year
1973
Tongue
English
Weight
256 KB
Volume
32
Category
Article
ISSN
0038-0938

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✦ Synopsis

Strong line wings and the V-reversal in umbral countours of Fe~ 6302.5/~ and similar lines have been explained earlier by inhomogeneous magnetic models. It is shown that both effects may also be explained assuming a homogeneous magnetic field and homogeneous umbral model atmospheres.

A discussion of the difficulties arising in LTE calculations of Fe i 5250.2~-contours by means of umbral models recently derived suggests that the high layers of these models are strongly influenced by non-LTE, a temperature minimum occurring perhaps at larger depths than in the undisturbed photosphere.

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