Hostname: page-component-848d4c4894-pjpqr Total loading time: 0 Render date: 2024-06-17T03:29:15.294Z Has data issue: false hasContentIssue false
  • English
  • Français

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: arturo@themis.iac.es
Rights & Permissions [Opens in a new window]

Résumé

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

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 

References

Carroll, T. A. & Staude, J. 2005. Astronomische Nachrichten 326, 296–300.Google Scholar
Casini, R., López Ariste, A., Tomczyk, S., & Lites, B. W. 2003. The Astrophysical Journal Letters 598, L67–L70.Google Scholar
Grossmann-Doerth, U., Schüssler, M., Sigwarth, M., & Steiner, O. 2000. Astronomy and Astrophysics 357, 351–358.Google Scholar
Landi Degl'Innocenti, E. & Landolfi, M. 2004. Polarization in Spectral Lines. volume 307. Kluwer Academic Publishers, Dordrecht.Google Scholar
López Ariste, A. 2002. The Astrophysical Journal 564, 379–384.Google Scholar
López Ariste, A., Asensio Ramos, A. & González Fernández, C. 2011. Astronomy and Astrophysics 527, 120.Google Scholar
Petit, P., Aurière, M., Konstantinova-Antova, R., Morgenthaler, A., Perrin, G., Roudier, T., & Donati, J. F. 2013, p. 231.Google Scholar
Tsvetkova, S., Petit, P., Aurière, M., Konstantinova-Antova, R., Wade, G. A., Charbonnel, C., Decressin, T., & Bogdanovski, R. 2013. Astronomy and Astrophysics 556, 43.CrossRefGoogle Scholar
Westendorp Plaza, C., del Toro Iniesta, J. C., Ruiz Cobo, B. & Martínez Pillet, V. 2001a. The Astrophysical Journal 547, 1148–1158.CrossRefGoogle Scholar
Westendorp Plaza, C., del Toro Iniesta, J. C., Ruiz Cobo, B., Martínez Pillet, V., Lites, B. W., & Skumanich, A. 2001b. The Astrophysical Journal 547, 1130–1147.Google Scholar