Evidence for Collisional Depolarization in the MgH Lines of the Second Solar Spectrum
The analysis of the Hanle effect in solar molecular lines allows us to obtain empirical information on hidden, mixed-polarity magnetic fields at subresolution scales in the (granular) upflowing regions of the ``quiet'' solar photosphere. Here we report that collisions seem to be very efficient in depolarizing the rotational levels of MgH lines
Asensio Ramos, A. et al.
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12
2005