Results 11 to 20 of about 22,479 (200)

Evaluating solar-like behavior in turbulent alpha and Babcock–Leighton mechanisms using non-kinematic nonlinear flux-transport solar dynamos [PDF]

Scientific Reports
In this study, we simulate 30,000 years of solar activity using turbulent-alpha (TA) and Babcock–Leighton (BL) mechanisms in a non-kinematic, nonlinear mean field flux-transport solar dynamo model.
Fadil Inceoglu, Rainer Arlt
doaj   +2 more sources

Helioseismic evidence that the solar dynamo originates near the tachocline [PDF]

Scientific Reports
The exact location of the solar dynamo remains uncertain–whether it operates primarily in the near-surface shear layer, throughout the entire convection zone, or near the tachocline - a region of sharp transition in the solar rotation, located at the ...
Krishnendu Mandal, Alexander G. Kosovichev   +1 more
doaj   +2 more sources

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
doaj   +2 more sources

Magnetic Helicity and the Solar Dynamo [PDF]

Entropy, 2019
Solar magnetism is believed to originate through dynamo action in the tachocline. Statistical mechanics, in turn, tells us that dynamo action is an inherent property of magnetohydrodynamic (MHD) turbulence, depending essentially on magnetic helicity ...
John V. Shebalin
doaj   +2 more sources

Solar-type dynamo behaviour in fully convective stars without a tachocline [PDF]

Nature, 2016
In solar-type stars (with radiative cores and convective envelopes), the magnetic field powers star spots, flares and other solar phenomena, as well as chromospheric and coronal emission at ultraviolet to X-ray wavelengths.
A Brandenburg, A Fruscione, A Muñoz-Jaramillo, AA Pevtsov, AA West, AN Cox, BP Brown, BR Durney, C Garraffo, CM Johns-Krull, DJ Mullan, DL Moss, EA Speigel, EN Parker, EN Parker, ER Newton, G Guerrero, GF Benedict, GP Garmire, GS Vaiana, HC Spruit, HW Babcock, IN Reid, J Irwin, JD Kirkpatrick, Jeremy J. Drake, JHMM Schmitt, KA Arnauld, KL Cruz, M Dikpati, M Kiraga, MC Weisskopf, MK Browning, MK Browning, MS Bessell, Nicholas J. Wright, NJ Nelson, NJ Wright, O Vilhu, P Charbonneau, R Pallavicini, RD Jeffries, RK Smith, RW Noyes, W Cash, W Dobler, Y Fan   +46 more
core   +4 more sources

Solar dynamo [PDF]

, 2013
No abstract ...
Arlt, R., Bonanno, A., Brandenburg, A., Brun, A. S., Busse, F. H., Dikpati, M., Gilman, P. A., Hara, H., Hill, F., Kitiashvili, I. N., Kleeorin, N., Komm, R., Kosovichev, A. G., Mansour, N. N., Miesch, M., Nordlund, A., Pevtsov, A. A., Pipin, V. V., Rempel, M., Rogachevskii, I., Ruediger, G., Sekii, T., Simitev, R., Stein, R. F., Stenflo, J. O., Thompson, M. J., Ulrich, R. K., Wray, A. A., Yokoi, N., Yokoyama, T., Zhao, J.   +30 more
core   +3 more sources

Predicting solar cycle 24 with a solar dynamo model [PDF]

Physical Review Letters, 2007
Whether the upcoming cycle 24 of solar activity will be strong or not is being hotly debated. The solar cycle is produced by a complex dynamo mechanism. We model the last few solar cycles by `feeding' observational data of the Sun's polar magnetic field ...
A. R. Choudhuri, A. R. Choudhuri, Arnab Rai Choudhuri, Jie Jiang, K. H. Schatten, Piyali Chatterjee, S. D’Silva   +6 more
core   +5 more sources

Dynamo Models of the Solar Cycle

Living Reviews in Solar Physics, 2010
This paper reviews recent advances and current debates in modeling the solar cycle as a hydromagnetic dynamo process. Emphasis is placed on (relatively) simple dynamo models that are nonetheless detailed enough to be comparable to solar cycle ...
Paul Charbonneau
doaj   +2 more sources

Dynamo Models of the Solar Cycle

Living Reviews in Solar Physics, 2005
This paper reviews recent advances and current debates in modeling the solar cycle as a hydromagnetic dynamo process. Emphasis is placed on (relatively) simple dynamo models that are nonetheless detailed enough to be comparable to solar cycle ...
Charbonneau Paul
doaj   +2 more sources

The solar dynamo [PDF]

International Astronomical Union Colloquium, 1991
AbstractThe traditionalαΩ-dynamo as a model for the solar cycle has been successful in explaining the butterfly diagram, phase relations between poloidal and toroidal field, and polar branch migration features. Observational and theoretical achievements in recent years have however shaken this picture.
Axel Brandenburg, Ilkka Tuominen
openaire   +2 more sources