Results 101 to 110 of about 3,487 (215)

Stellar Cycle Variability in Mount Wilson Stars and Dynamo Models: Rotation Rate and Dynamo Number Dependency

The Astrophysical Journal
Similar 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, Rohan B. Mandrai, Bidya Binay Karak   +2 more
doaj   +1 more source

Solar Dynamo

, 1999
A dynamo is a mechanism for a star or planet to create magnetic field. One type of solar dynamo is turbulent convection, which researchers have simulated on a supercomputer.
Anshu Dubey, Fausto Cattaneo
core  

Discriminating between Babcock–Leighton-type Solar Dynamo Models by Torsional Oscillations

The Astrophysical Journal
The 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

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

Percolation and the Solar Dynamo

The Astrophysical Journal Supplement Series, 2007
The origin of magnetic field sources in the Sun’s dynamo is central to this paper. The Babcock-Leighton dynamo was originally envisaged as a shallow dynamo. The source of the Sun’s magnetism is now generally thought to reside near the base of the convection zone and that these fields rise by buoyancy to initiate sunspots.
openaire   +1 more source

Parallel and perpendicular cascades in solar wind turbulence

, 2005
MHD-scale fluctuations in the velocity, magnetic, and density fields of the solar wind are routinely observed. The evolution of these fluctuations, as they are transported radially outwards by the solar wind, is believed to involve both wave and ...
Matthaeus, William H., Oughton, Sean, S. Oughton, W. H. Matthaeus, Oughton, S., Matthaeus, W. H.   +5 more
core   +1 more source

On the Origin of Long-term Modulation in the Sun’s Magnetic Activity Cycle

The Astrophysical Journal Letters
One 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, Suprabha Mukhopadhyay, Dibyendu Nandy   +2 more
doaj   +1 more source

An elementary introduction to solar dynamo theory

, 2007
The cyclically varying magnetic field of the Sun is believed to be produced by the hydromagnetic dynamo process. We first summarize the relevant observational data pertaining to sunspots and solar cycle.
Choudhuri, Arnab Rai
core  

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  

Solar dynamo models

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