| Issue |
EAS Publications Series
Volume 55, 2012
4th French-Chinese Meeting on Solar Physics - Understanding Solar Activity: Advances and Challenges
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|
|---|---|---|
| Page(s) | 79 - 82 | |
| Section | Magnetic Field and Polarization Measurements and Theory | |
| DOI | https://doi.org/10.1051/eas/1255010 | |
| Published online | 27 June 2012 | |
M. Faurobert, C. Fang and T. Corbard (eds)
EAS Publications Series, 55 (2012) 79-82
Height of the granulation contrast inversion layer derived from a cross-correlation method
Laboratoire Lagrange, UMR 7293, Université de Nice Sophia
Antipolis, CNRS, Observatoire de la Côte d’Azur, Campus Valrose, 06108
Nice,
France
Using spectroscopic data from Hinode/SOT we have obtained monochromatic images of the solar granulation at different levels in the Fe i 603 nm lines. The granulation contrast inversion is clearly detected as a negative peak in the cross-correlation of images at the continuum level and at line center levels. Taking advantage of the perspective effect which appears in images taken out of the solar disk center, we were able to measure the formation heights of the lines and the height of the contrast inversion layer.
© EAS, EDP Sciences 2012