Bibcode
López Ariste, A.; Asensio-Ramos, A.; González Fernández, C.
Bibliographical reference
Astronomy and Astrophysics, Volume 527, id.A120
Advertised on:
3
2011
Journal
Citations
13
Refereed citations
10
Description
Aims: We propose and explore a new diagnostic technique based
upon the linear polarization emitted in Hanle-sensitive lines in
disk-integrated stars where a dipolar magnetic field breaks the
rotational symmetry of the resonance scattering polarization
Methods: A star with a simple dipolar field and a 1-0 spectral line were
used to compute polarization amplitudes and angles. Results:
Predicted amplitudes are low but within reach of present instruments Conclusions: A new application of the Hanle effect is proposed and
analyzed as a tool that allows measuring of some of the weakest stellar
magnetic fields.
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