Coronal heating and flaring in QSLs
نویسندگان
چکیده
منابع مشابه
Recent advances in coronal heating.
The solar corona, the tenuous outer atmosphere of the Sun, is orders of magnitude hotter than the solar surface. This 'coronal heating problem' requires the identification of a heat source to balance losses due to thermal conduction, radiation and (in some locations) convection. The review papers in this Theo Murphy meeting issue present an overview of recent observational findings, large- and ...
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Popular models for the formation of X-ray spectra in AGN assume that a large fraction of the disk’s angular momentum dissipation takes place in a hot corona that carries a small amount of the accreting mass. Here I discuss the formation of a magnetically–structured accretion disk corona, generated by buoyancy instability in the disk and the heating of localized flare regions up to the canonical...
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The relativistically broadened iron K-α line at 6.4 keV observed in the Seyfert 1 galaxy MCG–6-30-15 has provided a probe of the strong-gravity environment near a black hole, in particular suggesting that it is rapidly spinning. An important variable in such analyses is the geometry of the illuminating source. We present a new technique which constrains this geometry based on the spectral line ...
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Magnetic helicity of solar active regions is quantified by the twist and writhe of their underlying flux tubes. The twist component, in particular, is believed to be an important determinant of the energetics and dynamics of active regions that ultimately lead to coronal heating and solar eruptive activity. Here, I review the role of active region twist in the context of solar activity – laying...
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ژورنال
عنوان ژورنال: Proceedings of the International Astronomical Union
سال: 2010
ISSN: 1743-9213,1743-9221
DOI: 10.1017/s1743921311015304