منابع مشابه
Self-Similar Magnetic Arcades
We study self-similar analytical solutions for force-free magnetic field in azimuthal symmetry and arcade topology. We assume the existence of a poloidal magnetic field, anchored on a heavy spherical conductor. The field is changed by shearing the foot points of the arcade due to differential rotation. This rotation gives rise to a toroidal component in the magnetic structure which reacts by ex...
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X-ray spectroscopy performed by diierent astronomical spacecrafts has shown that many active late-type stars possess coronae. For such reason, the magnetic structure of stellar coronae has raised considerable interest and, by analogy with the Sun, it is generally assumed that stellar coronae are structured by magnetic elds having the shape of arcades. Most of those coronal magnetic eld conngura...
متن کاملMagnetohydrodynamic Modeling of Solar Magnetic Arcades Using Exponential Propagation Methods
Advanced numerical methods based on exponential propagation have been applied to mag netohydrodynamic MHD simulations This recently developed numerical technique e volves the system of nonlinear equations using exponential propagation of the Jacobian matrix The exponential of the matrix is approximated by projecting it onto the Krylov subspace using the Arnoldi algorithm The primary advantage o...
متن کاملمروری بر کتاب self-similar groups
خودسانی یا فرکتالی بودن پدیده ای مهم در طبیعت است که در بسیاری از وجوه تمدن جدید انعکاس یافته است. این پدیده علاوه بر هنر، در فیزیک، شیمی علوم پزشکی و علوم کامپیوتر نیز رخ می نماید. خودسانی در مباحث مختلفی از ریاضیات و مدلسازی ریاضی از جمله دستگاههای دینامیکی و آشوب، فرآیندهای تصادفی و فیزیک آماری، توپولوژی و هندسه فرکتالی نیز ظاهر می شود.
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ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 2008
ISSN: 0035-8711,1365-2966
DOI: 10.1111/j.1365-2966.2008.12858.x