Synoptic program - Variations of the Turbulent magnetic field

Details Synoptic program - Variations of the Turbulent magnetic field Synoptic program - Variations of the Turbulent magnetic field

Sep 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008espm...12.2.71k&link_type=abstract

"12th European Solar Physics Meeting, Freiburg, Germany, held September, 8-12, 2008. Online at http://espm.kis.uni-freiburg.de/,

Physics

Scientific paper

We have initiated a synoptic program at the Istituto Ricerche Solari Locarno (IRSOL) to observe variations of the turbulent magnetic field with the solar cycle. Our main target are C2 molecular lines at 5141 A which are excellent for employing the differential Hanle effect to determine the strength of the turbulent magnetic field (see Berdyugina & Fluri 2004). These lines are monitored about twice per month at five position angles around the solar limb (N, NW, W, SW, S) at mu=0.1. Several other lines, for example the Cr I triplet at 5206 A, have also been chosen for our observations. This is the first systematic study of temporal variations of the second solar spectrum, and we have already noticed significant differences between single measurements taken at the solar maximum and minimum. We present a description of the synoptic program and first observations.

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