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Astrophysical Spectropolarimetry and Magnetic Field Diagnostics

Published online by Cambridge University Press:  26 May 2016

J. Trujillo Bueno
J. Trujillo Bueno*
Affiliation:
Instituto de Astrofísica de Canarias, 38200 La Laguna, Tenerife, Spain

Abstract

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This paper highlights the increasing interest of astrophysical spectropolarimetry by showing how remote sensing techniques based on the Hanle and Zeeman effects are allowing us to investigate the magnetism of the extended solar atmosphere. Particular emphasis is given to the development of new diagnostic windows on the weakest magnetic fields of the photosphere, chromosphere and corona. Spectropolarimetry in the He i 10830 Å multiplet is allowing us to infer the three-dimensional geometry of the magnetic fields that confine the plasma of solar prominences. Multilevel modelling of the Hanle and Zeeman effects in the Ca II IR triplet and other chromospheric lines is helping us to decipher the strength and topology of chromospheric magnetic fields in regions where photospheric magnetograms show the well-known ‘salt and pepper’ patterns of mixed polarities. The Hanle effect in molecular lines, as well as in atomic lines of rare-earth elements like Ce II, offers a novel diagnostic tool for empirical investigations of ‘turbulent’ magnetic fields in relatively deep regions of the ‘quiet’ solar photosphere.

Type
Session D. Atmospheric Inhomogeneities
Information
Symposium - International Astronomical Union , Volume 210: Modelling of Stellar Atmospheres , 2003 , pp. 243 - 258
Copyright
Copyright © Astronomical Society of the Pacific 2003 

References

Asplund, M., Ludwig, H.G., Nordlund, Å & Stein, R.F. 2000, A&A, 359, 669 Google Scholar
Berdyugina, S.V., Stenflo, J.O. & Gandorfer, A. 2002, A&A, 388, 1062 Google Scholar
Canfield, R.C. 1971, A&A, 10, 64 Google Scholar
Emonet, T. & Cattaneo, F. 2001, ApJ, 560, L197 CrossRefGoogle Scholar
Gandorfer, A. 2000, The Second Solar Spectrum, Vol. 1, ETH, Zürich.Google Scholar
Gandorfer, A. 2001, in Advanced Solar Polarimetry, Sigwarth, M. (ed.), ASP Conf. Series, Vol. 236, 109 Google Scholar
Gandorfer, A. 2002, The Second Solar Spectrum, Vol. 2, ETH, Zürich.Google Scholar
Khomenko, E.V. et al. 2002, A&A, submitted Google Scholar
Landi Degl'Innocenti, E. 1983, Sol. Phys., 85, 3 CrossRefGoogle Scholar
Landi Degl'Innocenti, E. & Landi Degl'Innocenti, M. 1981, Il Nuovo Cimento, 62, 1 CrossRefGoogle Scholar
Landau, L.D. & Lifshitz, E.M. 1982, Quantum Mechanics, Pergamon, Oxford Google Scholar
Lin, H., & Rimmele, T. 1999, ApJ, 514, 448 Google Scholar
Manso Sainz, R., & Trujillo Bueno, J. 2001, in Advanced Solar Polarimetry, Sigwarth, M. (ed.), ASP Conf. Series, Vol. 236, 213–220.Google Scholar
Manso Sainz, R., & Landi Degl'Innocenti, E. 2002, A&A, 394, 1093 Google Scholar
Priest, E.R. 1989, in ‘Dynamics and Structure of Quiescent Solar Prominences’, Priest, E. R. (ed.), Kluwer, 1 CrossRefGoogle Scholar
Almeida, Sánchez & Lites, B. 2000, ApJ, 532, 1215 Google Scholar
Scharmer, G.B. et al. 2002, Nature, 420, 151 Google Scholar
Stenflo, J.O. 1994, Solar Magnetic Fields: Polarized Radiation Diagnostics, Kluwer Academic Publishers Google Scholar
Stenflo, J.O. 1999, in Solar Polarization, Nagendra, K. N. & Stenflo, J. O. (eds.), Kluwer Academic Publishers, 1 Google Scholar
Stenflo, J.O., & Keller, C. 1997, A&A, 321, 927 Google Scholar
Stenflo, J.O., Keller, C., & Gandorfer, A. 2000, A&A, 355, 789 Google Scholar
Trujillo Bueno, J. 1999, in Solar Polarization, Nagendra, K. N. & Stenflo, J. O. (eds.), Kluwer Academic Publishers, 73–96 CrossRefGoogle Scholar
Trujillo Bueno, J. 2001, in Advanced Solar Polarimetry, Sigwarth, M. (ed.), ASP Conf. Series, Vol. 236, 161–195 Google Scholar
Trujillo Bueno, J. 2002, in Stellar Atmosphere Modeling, Hubeny, I., Mihalas, D. & Werner, K. (eds.), ASP Conf. Series, in press Google Scholar
Trujillo Bueno, J. & Landi Degl'Innocenti, E. 1997, ApJ Letters, 482, L183 Google Scholar
Trujillo Bueno, J., Collados, M., Paletou, F., & Molodij, G. 2001, in Advanced Solar Polarimetry, Sigwarth, M. (ed.), ASP Conf. Series, Vol. 236, 141 Google Scholar
Trujillo Bueno, J. & Manso Sainz, R. 2002, Il Nuovo Cimento C, Vol. 25 Google Scholar
Trujillo Bueno, J., Moreno Insertis, F., & Sánchez, F., (eds.) 2002a, Astrophysical Spectropolarimetry, Cambridge University Press Google Scholar
Trujillo Bueno, J. et al. 2002b, Nature, 415, 403 Google Scholar