Results 11 to 20 of about 972,333 (200)
, 1999 It is believed that the magnetic field of the Sun is produced by the dynamo process, which involves nonlinear interactions between the solar plasma and the magnetic field. After summarizing the main characteristics of solar magnetic fields, the basic ideas of dynamo theory are presented.
Choudhuri, Arnab Rai
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Turbulent 3D MHD dynamo model in spherical shells: regular oscillations of the dipolar field [PDF]
, 2010 We report the results of three-dimensional numerical simulations of convection-driven dynamos in relatively thin rotating spherical shells that show a transition from an strong non-oscillatory dipolar magnetic field to a weaker regularly oscillating ...
Simitev, R.D. +2 more
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Solar cycle variations in equatorial ionospheric zonal electric fields near sunrise
Earth and Planetary Physics, 2023 In this study, we investigate the solar cycle dependence of the sunrise ionospheric zonal electric fields at the equator under geomagnetically quiet conditions.
JunJie Chen +3 more
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The 8‐Year Solar Cycle During the Maunder Minimum
AGU Advances, 2023 The presence of grand minima, characterized by significantly reduced solar and stellar activity, brings a challenge to the understanding of solar and stellar dynamo. The Maunder Minimum (1645–1715 AD) is a representative grand solar minimum.
Limei Yan +10 more
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Universal dynamo paradigm for solar activity, Higgs fields and disasters [PDF]
EPJ Web of Conferences, 2021 There is still a problem of a correct and accurate description of the dynamo and its uses in various fields of physics. To solve this problem, a special and universal representation of dynamo is proposed.
Shevtsov Boris
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The role of the bow shock in solar wind-magnetosphere coupling [PDF]
Annales Geophysicae, 2011 In this paper we examine the role of the bow shock in coupling solar wind energy to the magnetosphere using global magnetohydrodynamic simulations of the solar wind-magnetosphere interaction with southward IMF.
R. E. Lopez, V. G. Merkin, J. G. Lyon
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Nonlinearity, time delay, and Grand Maxima in supercritical Babcock-Leighton dynamos
Journal of Space Weather and Space Climate, 2023 The physical origin of centennial and millennial-scale variations in solar activity remains ill-understood. Although stochastic fluctuations of the solar dynamo are unavoidable in view of the turbulent nature of the solar convection zone, the ...
Thibeault Christian +2 more
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Theoretical study of the ionospheric dynamo region inside the South Atlantic Anomaly
Earth and Planetary Physics, 2023 The South Atlantic Anomaly (SAA) is a region where the geomagnetic field is significantly lower than that of the surrounding area. On the basis of the models of CHAOS-7.8, Mass Spectrometer Incoherent Scatter Model (NRLMSISE-00), and International ...
SiQi Yi +7 more
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Models for the long-term variations of solar activity
Living Reviews in Solar Physics, 2023 One obvious feature of the solar cycle is its variation from one cycle to another. In this article, we review the dynamo models for the long-term variations of the solar cycle.
Bidya Binay Karak
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Heartbeat of the sun from principal component analysis and prediction of solar activity on a millenium timescale [PDF]
, 2015 We derive two principal components (PCs) of temporal magnetic field variations over the solar cycles 21-24 from full disk magnetograms covering about 39% of data variance, with σ = 0.67. These PCs are attributed to two main magnetic waves travelling from
Shepherd, Simon J. +10 more
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