Results 41 to 50 of about 638,953 (318)
Solar Vortices and Magnetic Fields [PDF]
Nature, 1908 SEVERAL weeks ago I discussed with Prof. Hale the matter of solar vortices and magnetic fields, with reference to his recent discoveries, briefly described in NATURE for August 20 (p. 368). It did not seem to me probable that the effects could be accounted for by unequal diffusivity of the positive and negative ions, or by centrifugal separation, nor ...
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Scaling laws of free magnetic energy stored in a solar emerging flux region [PDF]
, 2014 This Letter reports scaling laws of free magnetic energy stored in a solar emerging flux region which is a key to understanding the energetics of solar active phenomena such as solar flares and coronal mass ejections. By performing 3-dimensional magnetohydrodynamic simulations that reproduce several emerging flux regions of different magnetic ...
arxiv +1 more source
Extreme solar storms based on solar magnetic field [PDF]
Journal of Atmospheric and Solar-Terrestrial Physics, 2018 Many questions have to be answered before understanding the relationship between the emerging magnetic flux through the solar surface and the extreme geoeffective events. Which threshold determines the onset of the eruption? What is the upper limit in energy for a flare? Is the size of sunspot the only criteria to get extreme solar events?
Brigitte Schmieder, Brigitte Schmieder
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A Statistical Study on Property of Spatial Magnetic Field for Solar Active Region [PDF]
, 2014 Magnetic fields dominate most solar activities, there exist direct relations between solar flare and the distributions of magnetic field, and also its corresponding magnetic energy. In this paper, the statistical results about the relationships between the spatial magnetic field and solar flare are given basing on vector magnetic field observed by the ...
arxiv +1 more source
Global Coronal Equilibria with Solar Wind Outflow [PDF]
, 2021 Given a known radial magnetic field distribution on the Sun's photospheric surface, there exist well-established methods for computing a potential magnetic field in the corona above. Such potential fields are routinely used as input to solar wind models, and to initialize magneto-frictional or full magnetohydrodynamic simulations of the coronal and ...
arxiv +1 more source
The Measurement of Solar Magnetic Fields [PDF]
Symposium - International Astronomical Union, 1971 The different methods which have been used, or which may be used in the future, to measure solar magnetic fields are described and discussed. Roughly these can be divided into three groups (a) those which use the influence of the magnetic field on the electromagnetic radiation, (b) those which use the influence of the field on the structure of the ...
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Solar Magnetism in the Polar Regions
Living Reviews in Solar Physics, 2015 This review describes observations of the polar magnetic fields, models for the cyclical formation and decay of these fields, and evidence of their great influence in the solar atmosphere.
Gordon J. D. Petrie
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Manifestations of Solar Magnetic Fields [PDF]
Highlights of Astronomy, 1998 AbstractThe magnetism of the Sun manifests itself in innumerable ways, many of which constitute what is referred to as solar magnetic activity, while others are counted among the phenomena of the quiet Sun. After a brief overview of the structure of the solar magnetic field, a few examples of its manifestations are pointed out.
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Advanced Engineering Materials, EarlyView.This article provides a comprehensive overview of fundamentals and recent advances of transparent thin‐film surface acoustic wave technologies on glass substrates for monitoring and prevention/elimination of fog, ice, and frost. Fogging, icing, or frosting on optical lenses, optics/photonics, windshields, vehicle/airplane windows, and solar panel ...
Hui Ling Ong +11 more
wiley +1 more source
Fractality of Magnetic Helicity Distribution in the Solar Corona
The Astrophysical JournalWe find a universal power-law scaling of magnetic helicity distribution in the solar corona. Magnetic helicity is a dynamical invariant for ideal magnetohydrodynamics (MHD) and characterizes complex magnetic field structure by measuring the degree of ...
Anda Xiong +3 more
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