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Chromospheric diagnosis with forward scattering polarization

Published online by Cambridge University Press:  24 July 2015

E. S. Carlin
E. S. Carlin*
Affiliation:
Istituto Ricerche Solari Locarno, Monti Locarno 6600, Switzerland email: edgar@irsol.ch
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Abstract

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Is it physically feasible to perform the chromospheric diagnosis using spatial maps of scattering polarization at the solar disk center? To investigate it we synthesized polarization maps (in 8542 Å) resulting from MHD solar models and NLTE radiative transfer calculations that consider Hanle effect and vertical macroscopic motions. After explaining the physical context of forward scattering and presenting our results, we arrive at the definition of Hanle polarity inversion lines. We show how such features can give support for a clearer chromospheric diagnosis in which the magnetic and dynamic effects in the scattering polarization could be disentangled.

Keywords

Polarizationradiative transferscatteringstars: atmospheresstars: kinematicsSun: chromospheremagnetic fieldsSun: atmospheric motions
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 10 , Symposium S305: Polarimetry: From the Sun to Stars and Stellar Environments , December 2014 , pp. 146 - 153
Copyright
Copyright © International Astronomical Union 2015 

References

Anusha, L. S., Nagendra, K. N., Bianda, M., Stenflo, J. O., Holzreuter, R., Sampoorna, M., Frisch, H., Ramelli, R., & Smitha, H. N. 2011, ApJ 737, 95 Google Scholar
Bianda, M., Ramelli, R., Anusha, L. S., Stenflo, J. O., Nagendra, K. N., Holzreuter, R., Sampoorna, M., Frisch, H., & Smitha, H. N. 2011, Astron. Lett. 530, L13 CrossRefGoogle Scholar
Bommier, V. 1997, A&A 328, 726 Google Scholar
Bommier, V. 2009, in: Berdyugina, S. V., Nagendra, K. N., & Ramelli, R. (eds.), Solar Polarization 5: In Honor of Jan Stenflo, ASP Conf. Series 405 (San Francisco: ASP), p. 335 Google Scholar
Carlin, E. S., Asensio Ramos, A., & Trujillo Bueno, J. 2013, ApJ 764, 40 Google Scholar
Carlin, E. S. & Asensio Ramos, A. 2015, ApJ 801, 16 Google Scholar
Carlsson, M. & Stein, R. F. 1997, ApJ, 481, 500 Google Scholar
Derouich, M., Trujillo Bueno, J., & Manso Sainz, R. 2007, A&A 472, 269 Google Scholar
Hansteen, V. H., Carlsson, M., & Gudiksen, B. 2007, in: Heinzel, P., Dorotovič, I., & Rutten, R. J. (eds.), The Physics of Chromospheric Plasmas, ASP Conf. Series 368 (San Francisco: ASP), p. 107 Google Scholar
Holzreuter, R., Fluri, D. M., & Stenflo, J. O. 2005, A&A 434, 713 Google Scholar
Landi Degl'Innocenti, E. 1984, Solar Phys. 91, 1 CrossRefGoogle Scholar
Landi Degl'Innocenti, E. & Landolfi, M. 2004, Polarization in spectral lines, Kluwer, Dordrecht (LL04)CrossRefGoogle Scholar
Leenaarts, J., Carlsson, M., Hansteen, V. & Rouppe van der Voort, L. 2009, Ap. Lett. 694, L128 Google Scholar
Manso Sainz, R. & Trujillo Bueno, J. 2003, in: Trujillo-Bueno, J. & Sanchez Almeida, J. (eds.), Solar Polarization, ASP Conf. Series 307 (San Francisco: ASP), p. 251 Google Scholar
Manso Sainz, R. & Trujillo Bueno, J. 2010, ApJ 722, 1416 Google Scholar
Milić, I. & Faurobert, M. 2012, A&A 539, A10 Google Scholar
Shine, R. A. & Linsky, J. L. 1974, Solar Phys. 39, 49 Google Scholar
Stenflo, J. O. & Keller, C. U. 1997, A&A 321, 927 Google Scholar
Stenflo, J. O. 2006, in: Casini, R. & Lites, B. W. (eds.), Solar Polarization 4, ASP Conf. Series 358 (San Francisco: ASP), p. 215 Google Scholar
Trujillo Bueno, J. 2001, in: Sigwarth, M. (ed.), Advanced Solar Polarimetry – Theory, Observation, and Instrumentation, ASP ASP Conf. Series 236 (San Francisco: ASP), p. 161 Google Scholar
Trujillo Bueno, J. 2003, in: Trujillo-Bueno, J. & Sanchez Almeida, J. (eds.), Solar Polarization, ASP Conf. Series 307 (San Francisco: ASP), p. 407 Google Scholar