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Hanle and Zeeman effects: from solar to stellar diagnostics

Published online by Cambridge University Press:  07 August 2014

A. López Ariste
A. López Ariste*
Affiliation:
THEMIS - CNRS UPS 853 C/ Vía Láctea s/n 38205 - La Laguna, Spain email: [email protected]
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Résumé

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We suggest the use of the area asymmetries of the Stokes V profile of a line sensitive to the Zeeman effect to diagnose variatios of the magnetic field along the line of sight in stellar atmospheres. This tool could allow to disentangle the magnetic topology of the observed stellar features in analogy to the solar case: a fibril topology as in plage and netwrok magnetic fields vs. a homogeneous and strong field as in sunspots. We also suggest the use of the Hanle effect as a means to observe weak global dipoles.

Keywords

PolarimetryMagnetic Fields
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 9 , Symposium S302: Magnetic Fields throughout Stellar Evolution , August 2013 , pp. 130 - 133
Copyright
Copyright © International Astronomical Union 2014 

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