Planning magneto-optical filters for the study of magnetic oscillations of the Sun
Abstract
VAMOS is a Magneto-Optical Filter (MOF) that can acquire nearly simultaneous Dopplergrams and magnetograms with high cadence in the K I 7699 Å line. We performed an accurate set-up of this instrument in view of its use for studying oscillations in solar magnetic regions. The optimal set-up for VAMOS was achieved and an extra result of the spectral transmission measurements was found. The MOF and Wing Selector (WS) bandpasses depend not only on the cell temperature and magnetic field but also on the radiation intensity entering the cell, when this radiation exceeds a suitable level. We call this effect The Intensity Effect.
- Publication:
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Astrophysics and Space Science
- Pub Date:
- July 2010
- DOI:
- 10.1007/s10509-010-0360-8
- Bibcode:
- 2010Ap&SS.328..325O
- Keywords:
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- Magneto-optical filter;
- Solar oscillations