نتایج جستجو برای: solar prominence
تعداد نتایج: 127155 فیلتر نتایج به سال:
Solar prominences are cool 10(4) kelvin plasma clouds supported in the surrounding 10(6) kelvin coronal plasma by as-yet-undetermined mechanisms. Observations from Hinode show fine-scale threadlike structures oscillating in the plane of the sky with periods of several minutes. We suggest that these represent Alfvén waves propagating on coronal magnetic field lines and that these may play a role...
Can the magnetic orientation of driver gas in the interplanetary medium observed at Earth be predicted when its solar source is identified? Based on the exploratory assumption that the free magnetic energy present when a coronal mass ejection (CME) is initiated is transferred almost totally to other forms of energy by the time the CME stops acceleration, the potential field model can appropriat...
Magnetic dips are generally assumed to be basic equilibrium con-gurations in quiescent solar prominences. Here we discuss two types of the magnetic dips which were considered in the literature: (1) dips resulting from a force-free magnetic equilibrium in the corona, and (2) magnetic dips which are formed in situations where the Lorentz force balances the weight of the prominence plasma. An impo...
The instructions under which raters quantify syllable prominence perception need to be simple in order to maintain immediate reactions. This leads to noise in the rating data that can be dealt with by normalization, e.g. setting central tendency = 0 and dispersion = 1 (as in Z-score normalization). Questions arise such as: Which parameter is adequate here to capture central tendency? Which refe...
Context. Prominences are cool, dense clouds suspended within the solar corona. Their in situ formation through levitation-condensation mechanism is a textbook example of thermal instability, where slight energy imbalance leads to runaway process resulting condensed filamentary structures embedded concave-up portions flux rope. The detailed interplay between local radiative losses and global hea...
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