Results 91 to 100 of about 972,333 (200)
Solar Dynamo Driven by Periodic Flow Oscillation
, 2001 We have proposed that the periodicity of the solar magnetic cycle is determined by wave mean flow interactions analogous to those driving the Quasi Biennial Oscillation in the Earth's atmosphere. Upward propagating gravity waves would produce oscillating
Einaudi, Franco +2 more
core
The Astrophysical JournalSimilar to the solar cycle, the magnetic cycles of other solar-type stars are also variable. How the variability of the stellar cycle changes with the rotation rate or the dynamo number is valuable information for understanding the stellar dynamo process.
Suyog Garg +2 more
doaj +1 more source
Discriminating between Babcock–Leighton-type Solar Dynamo Models by Torsional Oscillations
The Astrophysical JournalThe details of the dynamo process in the Sun are an important aspect of research in solar-terrestrial physics and astrophysics. The surface part of the dynamo can be constrained by direct observations, but the subsurface part lacks direct observational ...
Congyi Zhong, Jie Jiang, Zebin Zhang
doaj +1 more source
Journal of Physics: Conference Series, 2008 Mean-field dynamo models and 3D magnetohydrodynamic (MHD) simulations of global-scale solar convection provide complementary insights into the origins of cyclic magnetic activity in the Sun. One particular class of mean-field dynamo models, known as the Babcock-Leighton Flux-Transport (BL-FT) modeling approach, has enjoyed much success recently in ...
openaire +1 more source
LARGE-SCALE MAGNETIC AND VORTEX STRUCTURES IN A TURBULENT MEDIUM
East European Journal of Physics, 2016 The survey covers a main achievements in the field of dynamo theory. Applications of the model of turbulent convective dynamo to the problem of generation of a large-scale vortexes and magnetic structures in the solar photosphere are discussed ...
V. V. Yanovsky, A. V. Tur, M. I. Kopp
doaj
On the Origin of Long-term Modulation in the Sun’s Magnetic Activity Cycle
The Astrophysical Journal LettersOne of the most striking manifestations of orderly behavior emerging out of complex interactions in any astrophysical system is the 11 yr cycle of sunspots.
Chitradeep Saha +2 more
doaj +1 more source
Solar Field Mapping and Dynamo Behavior
Advances in Astronomy, 2012 We discuss the importance of the Sun’s large-scale magnetic field to the Sun-Planetary environment. This paper narrows its focus down to the motion and evolution of the photospheric large-scale magnetic field which affects many environments throughout ...
Kenneth H. Schatten
doaj +1 more source
Tidal Control of Equatorial Vertical E × B Drift Under Solar Minimum Conditions
Geophysical Research LettersObservations show that equatorial ionospheric vertical drifts during solar minimum differ from the climatology between late afternoon and midnight. By analyzing WACCM‐X simulations, which reproduce this solar cycle dependence, we show that the interplay ...
H.‐L. Liu, A. Maute
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Variations of the solar cycle profile in a solar dynamo with fluctuating dynamo governing parameters
, 2012 Context. Solar cycles vary in their amplitude and shape. There are several empirical relations between various parameters that link the cycle’s shape and amplitude, foremost these of the Waldmeier relations. Aims.
D. D. Sokoloff +2 more
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Tidal Triggers and the Predictability of Solar Activity
The Astrophysical JournalMagneto–Rossby waves in the solar tachocline are currently considered to be one of the main determinants of solar activity. In particular, they can give rise to the quasi-biennial oscillation (QBO).
Frank Stefani +3 more
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