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Statistical Analysis of the very Quiet Sun Magnetism

Bibcode
2010ApJ...711L..57M
DOI
10.1088/2041-8205/711/2/L57
Martínez-González, M. J.; Manso-Sainz, R.; Asensio-Ramos, A.; López Ariste, A.; Bianda, M.
Bibliographical reference

The Astrophysical Journal Letters, Volume 711, Issue 2, pp. L57-L60 (2010).

Advertised on:
3
2010
Number of authors
5
IAC number of authors
3
Citations
12
Refereed citations
10
Description
The behavior of the observed polarization amplitudes with spatial resolution is a strong constraint on the nature and organization of solar magnetic fields below the resolution limit. We study the polarization of the very quiet Sun at different spatial resolutions using ground- and space-based observations. It is shown that 80% of the observed polarization signals do not change with spatial resolution, suggesting that, observationally, the very quiet Sun magnetism remains the same despite the high spatial resolution of space-based observations. Our analysis also reveals a cascade of spatial scales for the magnetic field within the resolution element. It is manifest that the Zeeman effect is sensitive to the microturbulent field usually associated with Hanle diagnostics. This demonstrates that Zeeman and Hanle studies show complementary perspectives of the same magnetism.
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Magnetic fields are at the base of star formation and stellar structure and evolution. When stars are born, magnetic fields brake the rotation during the collapse of the mollecular cloud. In the end of the life of a star, magnetic fields can play a key role in the form of the strong winds that lead to the last stages of stellar evolution. During

Tobías
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In progress
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Magnetism, Polarization and Radiative Transfer in Astrophysics

Magnetic fields pervade all astrophysical plasmas and govern most of the variability in the Universe at intermediate time scales. They are present in stars across the whole Hertzsprung-Russell diagram, in galaxies, and even perhaps in the intergalactic medium. Polarized light provides the most reliable source of information at our disposal for the

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In progress
Type
Refereed
Solar Physics (FS)

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