Results 31 to 40 of about 22,479 (200)
Effects of Emerging Bipolar Magnetic Regions in Mean-field Dynamo Model of Solar Cycles 23 and 24
The Astrophysical Journal, 2023 We model the physical parameters of Solar Cycles 23 and 24 using a nonlinear dynamical mean-field dynamo model that includes the formation and evolution of bipolar magnetic regions (BMRs). The Parker-type dynamo model consists of a complete MHD system in
V. V. Pipin +2 more
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External Forcing of the Solar Dynamo
Frontiers in Astronomy and Space Sciences, 2022 In this paper I examine whether external forcing of the solar dynamo on long timescales can produce detectable signal in the form of long term modulation of the magnetic cycle.
Paul Charbonneau
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Differential Rotation for Different-sized Sunspot Groups Early Observed by the OGAUC
The Astrophysical Journal, 2023 Solar differential rotation is an important ingredient of the solar dynamo model, not only because the solar rotation profile is one of the key inputs in a solar dynamo model, but also because it imposes constraints for the solar dynamo model.
Miao Wan +3 more
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Comptes Rendus. Physique, 2008 We shortly review the basic observational facts concerning the solar dynamo. Then, a brief overview of our current understanding of the large-scale evolution of the magnetic field of the Sun is proposed, showing, in particular, some successes and difficulties of the mean-field models.
N. O. Weiss, M. J. Thompson
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Current helicity constraints in solar dynamo models [PDF]
, 2012 We investigate to what extent the current helicity distribution observed in solar active regions is compatible with solar dynamo models. We use an advanced 2D mean-field dynamo model with dynamo action largely concentrated near the bottom of the ...
Gao, Yu +7 more
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The Solar Dynamo and Planetary Dynamo [PDF]
Symposium - International Astronomical Union, 1993 A dynamo driven by flows of differential rotation and global convection in a rotating sphere is reviewed as a model of the solar and planetary dynamos. The flows can amplify a magnetic field from an infinitesimal level and thus can generate a magnetic field.
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Duskside F-region dynamo currents: its relationship with prereversal enhancement of vertical plasma drift [PDF]
Annales Geophysicae, 2010 From magnetic field observations by CHAMP we estimate F-region dynamo current densities near the sunset terminator during solar maximum years from 2001 to 2002.
J. Park +4 more
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Electric Current Approach Studying Both Auroral Substorms and Solar Flares Together
Frontiers in Astronomy and Space Sciences, 2020 Auroral substorms and solar flares are basically various manifestations of electromagnetic energy dissipation processes, so it is useful to consider both phenomena in terms of a chain of processes, consisting of power supply (dynamo), transmission ...
Syun-Ichi Akasofu
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Buoyant Magnetic Loops in a Global Dynamo Simulation of a Young Sun [PDF]
, 2011 The current dynamo paradigm for the Sun and sun-like stars places the generation site for strong toroidal magnetic structures deep in the solar interior.
Brown +18 more
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Solar and stellar dynamos – latest developments [PDF]
Astronomische Nachrichten, 2002 6 pages, 4 figures, Astron Nachr (accepted; proceedings of "1st Potsdam Thinkshop on Sunspots and Starspots", Potsdam, Germany, May 2002)
Brandenburg, Albrecht, Dobler, Wolfgang
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