Hostname: page-component-6bf8c574d5-8gtf8 Total loading time: 0 Render date: 2025-02-19T19:14:30.307Z Has data issue: false hasContentIssue false
  • English
  • Français

Radiative transfer modeling of the Hanle effect in convective atmospheres

Published online by Cambridge University Press:  01 August 2006

Javier Trujillo Bueno
Javier Trujillo Bueno*
Affiliation:
Instituto de Astrofísica de Canarias, 38205 La Laguna, Tenerife, Spain Consejo Superior de Investigaciones Científicas (Spain) email: [email protected]
Rights & Permissions [Opens in a new window]

Abstract

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.

This paper summarizes the results of a recent investigation on the Hanle effect in atomic and molecular lines, which indicates that there is a vast amount of “hidden” magnetic energy and (unsigned) magnetic flux in the internetwork regions of the quiet solar photosphere. This hidden magnetic energy, localized in the (intergranular) downflowing plasma of the solar photosphere, is carried mainly by tangled fields at sub-resolution scales with strengths between the equipartition field values and ∼1 kG, and is more than sufficient to compensate the radiative energy losses of the solar outer atmosphere.

Keywords

Sun: magnetic fieldsSun: atmospherepolarizationscatteringconvectionline: formationradiative transferstars: magnetic fields
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 2 , Symposium S239: Convection in Astrophysics , August 2006 , pp. 44 - 51
Copyright
Copyright © International Astronomical Union 2007

References

Anderson, I. S., & Athay, R. G. 1989, ApJ 346, 1010CrossRefGoogle Scholar
Asensio Ramos, A., & Trujillo Bueno, J. 2005, ApJ Letters, 635, L112CrossRefGoogle Scholar
Asplund, M., Nordlund, Å., Trampedach, R., Allende-Prieto, C., & Stein, R. F. 2000, A&A, 359, 729Google Scholar
Cattaneo, F. 1999, ApJ, 515, L39CrossRefGoogle Scholar
Faurobert-Scholl, M., Feautrier, N., Machefert, F., Petrovay, K., & Spielfiedel, A. 1995, A&A, 298, 289Google Scholar
Gandorfer, A. 2000, The Second Solar Spectrum: A High Spectral Resolution Polarimetric Survey of Scattering Polarization at the Solar Limb in Graphical Representation. Vol. I: 4625 Å to 6995 Å (Zurich: vdf ETH)Google Scholar
Priest, E. 2006, in The Many Scales in the Universe, eds. Iniesta, J. C. del Toro et al. (Dordrecht: Kluwer), 197.CrossRefGoogle Scholar
Sánchez Almeida, J., Emonet, T., & Cattaneo, F. 2003, ApJ, 585, 536CrossRefGoogle Scholar
Shchukina, N., & Trujillo Bueno, J. 2001, ApJ, 550, 970CrossRefGoogle Scholar
Shchukina, N., & Trujillo Bueno, J. 2003, in ASP Conf. Ser. Vol. 307, Solar Polarization 3, ed. Bueno, J. Trujillo & Almeida, J. Sánchez (San Francisco: ASP), 336Google Scholar
Stein, R. F., & Nordlund, Å. 2006, ApJ, 642, 1246CrossRefGoogle Scholar
Stenflo, J. O. 1994, Solar Magnetic Fields: Polarized Radiation Diagnostics (Dordrecht: Kluwer)CrossRefGoogle Scholar
Stenflo, J. O., & Keller, C. U. 1997, A&A, 321, 927Google Scholar
Trujillo Bueno, J. 2001, in ASP Conf. Ser. Vol. 236, Advanced Solar Polarimetry: Theory, Observation and Instrumentation, ed. Sigwarth, M. (San Francisco: ASP), 161Google Scholar
Trujillo Bueno, J. 2003a, in ASP Conf. Ser. Vol. 307, Solar Polarization 3, ed. Bueno, J. Trujillo & Almeida, J. Sánchez (San Francisco: ASP), 407Google Scholar
Trujillo Bueno, J. 2003b, in ASP Conf. Ser. Vol. 288, Stellar Atmosphere Modeling, ed. Hubeny, I., Mihalas, D. & Werner, K. (San Francisco: ASP), 551Google Scholar
Trujillo Bueno, J., Shchukina, N., & Asensio Ramos, A. 2004, Nature, 430, 326CrossRefGoogle Scholar
Trujillo Bueno, J., Asensio Ramos, A., & Shchukina, N. 2006, in ASP Conf. Ser. Vol. in press, Solar Polarization 4, ed. Casini, R. & Lites, B. (San Francisco: ASP), in pressGoogle Scholar