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Probability distribution functions for solar and stellar magnetic fields

  • Jan O. Stenflo (a1)
Abstract

Magneto-convection structures the magnetic field in solar and stellar atmospheres over scales that for the Sun span about 8 orders of magnitudes, down to the magnetic diffusion scale of order 10 m. The statistical properties of this structuring are governed by probability density functions (PDFs), for the vertical and transverse field components as well as for the field inclination. Due to the fractal nature of the field pattern these PDFs appear to have a high degree of scale invariance. There are serious pitfalls in the derivations of empirical PDFs, pitfalls that are particularly severe in the case of the field inclination. This explains the fragmentary and rather unreliable PDF information available in the published literature. Here we discuss the nature of these pitfalls and indicate how they may be avoided, using Hinode quiet-sun Stokes vector data to derive PDFs for the field strength and field inclination.

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References
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de Wijn, A. G., Stenflo, J. O., Solanki, S. K., & Tsuneta, S. 2009, Space Science Reviews, 144, 275
Faurobert-Scholl, M. 1993, A&A, 268, 765
Lites, B. W., Kubo, M., Socas-Navarro, H., et al. 2008, ApJ, 672, 1237
Schüssler, M. & Vögler, A. 2008, A&A, 481, L5
Stenflo, J. O. 1973, Solar Phys. 32, 41
Stenflo, J. O. 1982, Solar Phys. 80, 209
Stenflo, J. O. 1994, Solar Magnetic Fields — Polarized Radiation Diagnostics. (Kluwer)
Stenflo, J. O. 2009, in: Nagendra, K. N., Ludwig, H.-G., & Bonifacio, P. (eds.), 3D views on cool stellar atmospheres: theory meets observation, Proc. JD10 at IAU General Assembly, Rio, Aug. 10–11, 2009, MemSAI, 80, 690
Stenflo, J. O. & Holzreuter, R. 2002, in: Sawaya-Lacoste, H. (ed.), Magnetic Coupling of the Solar Atmosphere, ESA Publ. SP-505, 101
Stenflo, J. O. & Holzreuter, R. 2003, in: Pevtsov, A. A. & Uitenbroek, H. (eds.), Current Theoretical Models and High Resolution Solar Observations, Proc. 21st International NSO/SP Workshop, ASP Conf. Ser. (San Francisco: ASP), vol. 286, 169
TrujilloBueno, J. Bueno, J., Shchukina, N., & Asensio Ramos, A. 2004, Nature, 430, 326
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Proceedings of the International Astronomical Union
  • ISSN: 1743-9213
  • EISSN: 1743-9221
  • URL: /core/journals/proceedings-of-the-international-astronomical-union
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