Abstract
This work gathers new evidences which support the MISMA hypothesis, i.e., this conjecture on the highly irregular nature of most photospheric magnetic fields. It is discussed how the magnetic flux conservation in sunspots demands penumbrae pervaded by kilometer-wide irregularities. The diagnosis of this type of tiny scales requires special tools. One of such tools is briefly described here, namely, an inversion code which allows for optically thin irregularities when fitting the Zeeman induced polarization (i.e., when fitting the so-called Stokes profiles) . This technique has been systematically applied to observed quiet Sun magnetic elements. As a first result, all observed Stokes profiles can be reproduced with a single physical scenario. The scenario includes two magnetic components embedded in a non-magnetic medium, and it is actually the same needed to account for the asymmetries of the Stokes profiles in plage regions. Mixed polarities in the resolution element are frequently required for a proper inversion. All in all, MISMAs seem to provide a fairly consistent picture of the quiet Sun magnetic fields.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
Bellot Rubio, L. R., Ruiz Cobo, B., and Collados, M.: 1997, ApJ 478, L45
Cattaneo, F.: 1998, private communication
del Toro Iniesta, J. C., Tarbell, T. D., and Ruiz Cobo, B.: 1994, ApJ 436, 400
Elmore, D. F., Lites, B. W., Tomczyk, S., Skumanich, A., et al.: 1992, Proc. SPIE 1746, 22
Frutiger, C. and Solanki, S. K.: 1998, A&A 336, L65
Gingerich, O., Noyes, R. W., Kalkofen, W., and Cuny, Y.: 1971, Solar Phys. 18, 347
Lites, B. W., Leka, K. D., Skumanich, A., Martínez Pillet, V., and Shimizu, T.: 1996, ApJ 460, 1019
Moreno-Insertis, F.: 1986, A&A 166, 291
Muller, R.: 1985, Solar Phys. 100, 237
Sánchez Almeida, J.: 1997, ApJ 491, 993
Sánchez Almeida, J.: 1998, ApJ 497, 967
Sánchez Almeida, J. and Bonet, J. A.: 1998, ApJ 505, 1010
Sánchez Almeida, J., Landi Degl’Innocenti, E., Martínez Pillet, V., and Lites B. W.: 1996, ApJ 446, 537
Sánchez Almeida, J. and Lites, B. W.: 1992, ApJ 398, 359
Sánchez Almeida, J. and Lites, B. W.: 1999, ApJ, in preparation
Skumanich, A., Lites, B. W., Martínez Pillet, V., and Seagraves, P.: 1997, ApJS 110, 357
Solanki, S. K.: 1993, Space Science Rev. 63, 1
Solanki, S. K. and Montavon, C. A. P.: 1993, A &A 275, 283
Spruit, H. C.: 1981, A&A 98, 155
Stenflo, J. O., Harvey, J. W., Brault, J. W., and Solanki, S. K.: 1984, A&A 131, 333
Title, A. M. and Berger, T. E.: 1996, ApJ 463, 797
Topka, K. P., Tarbell, T. D., and Title, A. M.: 1992, ApJ 396, 351
Westendorp Plaza, C., del Toro Iniesta, J. C., Ruiz Cobo, B., Martínez Pillet, V., Lites, B. W., and Skumanich, A.: 1997, Nat 389, 47
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 1999 Springer Science+Business Media Dordrecht
About this chapter
Cite this chapter
Sánchez Almeida, J. (1999). The Current Status of the MISMA Hypothesis. In: Nagendra, K.N., Stenflo, J.O. (eds) Solar Polarization. Astrophysics and Space Science Library, vol 243. Springer, Dordrecht. https://doi.org/10.1007/978-94-015-9329-8_19
Download citation
DOI: https://doi.org/10.1007/978-94-015-9329-8_19
Publisher Name: Springer, Dordrecht
Print ISBN: 978-90-481-5261-2
Online ISBN: 978-94-015-9329-8
eBook Packages: Springer Book Archive