On the central core in MHD winds and jets
نویسندگان
چکیده
منابع مشابه
On the central core in MHD winds and jets
We demonstrate that the 1D cylindrical version of the Grad-Shafranov equation is more rich than classical self-similar ones, and more suitable for the astrophysical jets we observe. In particular, it allows us to describe the central (and, hence, the most energetic) part of the flow. Both relativistic and non-relativistic versions are discussed. It is shown that taking into account the finite p...
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چکیده ندارد.
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We present general and global analytical solutions, valid from pole to equator, for the asymptotic structure of non-relativistic, rotating, stationary, axisymmetric, polytropic, unconfined, perfect MHD winds. The standard five lagrangian first integrals along field lines are assumed known. The asymptotic structure of such winds consists of field-regions virtually devoid of poloidal current. We ...
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We show that the formal asymptotic limit for all rotating polytropic axisymmetric perfect MHD flows is a kinetic energy dominated wind which collimates to paraboloids around the symmetry axis. We reach this result by showing that another, a priori possible, solution with finite Poynting flux can be excluded on the following physical grounds: (1) the wind velocity does not exceed the fast mode s...
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ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 2009
ISSN: 0035-8711,1365-2966
DOI: 10.1111/j.1365-2966.2009.14964.x