Results 81 to 90 of about 1,023,827 (208)

Is there a phase constraint for solar dynamo models?

, 2005
The spatio-temporal relationship between the sign of the observed radial component of the magnetic field at the solar surface and the sign of the toroidal field as inferred from Hale's polarity rules for sunspots is usually interpreted as signifying the ...
Schüssler, M., M. Schüssler
core   +1 more source

A Synchronized Two-Dimensional α-Ω Model of the Solar Dynamo. [PDF]

Sol Phys, 2023
Klevs M, Stefani F, Jouve L.
europepmc   +1 more source

The kinematic theory of solar dynamo

, 2003
Generation of the Sun's magnetic fields by self-inductive processes in the solar electrically conducting interior, the solar dynamo theory, is a fundamentally important subject in astrophysics.
Liao, XH, Zhang, KK
core  

Production of Sunspots and Their Effects on the Corona and Solar Wind: Insights from a New 3D Flux-Transport Dynamo Model

Frontiers in Astronomy and Space Sciences, 2018
We present a three-dimensional numerical model for the generation and evolution of the magnetic field in the solar convection zone, in which sunspots are produced and contribute to the cyclic reversal of the large-scale magnetic field. We then assess the
Rohit Kumar, Laurène Jouve, Rui F. Pinto, Alexis P. Rouillard   +3 more
doaj   +1 more source

Investigating Variations in Solar Differential Rotation by Helioseismology

The Astrophysical Journal
Helioseismic signatures of dynamo waves have recently been discovered in variations of the solar differential rotation, offering valuable insights into the type of dynamo mechanism operating in the solar convection zone. To characterize these variations,
Krishnendu Mandal, Alexander G. Kosovichev, Valery V. Pipin, Sylvain G. Korzennik   +3 more
doaj   +1 more source

Magnetic twist: a source and property of space weather

Journal of Space Weather and Space Climate, 2012
Aim: We present evidence for finite magnetic helicity density in the heliosphere and numerical models thereof, and relate it to the magnetic field properties of the dynamo in the solar convection zone.
Mitra Dhrubaditya, Brandenburg Axel, Warnecke Jörn   +2 more
doaj   +1 more source

A solar mean field dynamo benchmark [PDF]

, 2008
Context. The solar magnetic activity and cycle are linked to an internal dynamo. Numerical simulations are an efficient and accurate tool to investigate such intricate dynamical processes. Aims.
P. Gilman, A. Bonanno, A. S. Brun, M. J. Korpi, D. Moss, M. Dikpati, P. J. Käpylä, A. G. Kosovichev, L. Jouve, A. Brandenburg, R. Arlt, M. Rempel   +11 more
core   +1 more source

Nonlinear mean-field dynamo and prediction of solar activity [PDF]

, 2018
We apply a nonlinear mean-field dynamo model which includes a budget equation for the dynamics of Wolf numbers to predict solar activity. This dynamo model takes into account the algebraic and dynamic nonlinearities of the$\unicode[STIX]{x1D6FC}$effect ...
Saullin, N.,, I. Rogachevskii, Safiullin, N., Kleeorin, N., Rogachevskii, Igor,, A. Ruzmaikin, N. Kleeorin, Ruzmaikin, A., Ruzmaikin, A.,, Porshnev, S.,, Saullin, N., Porshnev, S., Kleeorin, Nathan,, Rogachevskii, I., S. Porshnev, N. Safiullin   +15 more
core   +1 more source

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

Long-term solar activity and its implications to the heliosphere, geomagnetic activity, and the Earth’s climate

Journal of Space Weather and Space Climate, 2013
The Sun’s long-term magnetic variability is the primary driver of space climate. This variability is manifested not only in the long-observed and dramatic change of magnetic fields on the solar surface, but also in the changing solar radiative output ...
Tanskanen Eija, Nandy Dibyendu, Manoharan Periasamy, Mursula Kalevi, Verronen Pekka   +4 more
doaj   +1 more source