scholarly journals Importance of Magnetic Helicity in Dynamos

2007 ◽  
pp. 219-253 ◽  
Author(s):  
Axel Brandenburg
Keyword(s):  
Magnetic Helicity

Solar Filaments as Tracers of Subsurface Processes

2000 ◽  
Vol 179 ◽  
pp. 177-183
Author(s):  
D. M. Rust
Keyword(s):  
Magnetic Fields ◽  
Magnetic Flux ◽  
Coronal Mass Ejections ◽  
Interplanetary Space ◽  
Intermediate Stage ◽  
Coronal Plasma ◽  
Magnetic Helicity ◽  
The Sun ◽  
New Paradigm ◽  
Solar Filaments

AbstractSolar filaments are discussed in terms of two contrasting paradigms. The standard paradigm is that filaments are formed by condensation of coronal plasma into magnetic fields that are twisted or dimpled as a consequence of motions of the fields’ sources in the photosphere. According to a new paradigm, filaments form in rising, twisted flux ropes and are a necessary intermediate stage in the transfer to interplanetary space of dynamo-generated magnetic flux. It is argued that the accumulation of magnetic helicity in filaments and their coronal surroundings leads to filament eruptions and coronal mass ejections. These ejections relieve the Sun of the flux generated by the dynamo and make way for the flux of the next cycle.

Inverse cascade in simulated MHD turbulence driven by small scale source of magnetic helicity

2016 ◽  
Vol 52 (1) ◽  
pp. 261-268
Author(s):  
R. Stepanov ◽  
◽  
V. Titov ◽  
◽  
Keyword(s):  
Magnetic Helicity ◽  
Small Scale ◽  
Mhd Turbulence ◽  
Inverse Cascade

Magnetic helicity in non-axisymmetric mean-field dynamo

2016 ◽  
Vol 52 (1) ◽  
pp. 145-154
Author(s):  
V. V. Pipin ◽  
Keyword(s):  
Mean Field ◽  
Magnetic Helicity ◽  
Mean Field Dynamo

Magnetic helicity and electromagnetic vortex filament flows under the influence of Lorentz force in MHD

Optik ◽  
2021 ◽  
pp. 167302
Author(s):  
Talat Körpınar ◽  
Rıdvan Cem Demirkol ◽  
Zeliha Körpınar
Keyword(s):  
Lorentz Force ◽  
Vortex Filament ◽  
Magnetic Helicity

scholarly journals The magnetic helicity density patterns from non-axisymmetric solar dynamo

2021 ◽  
Vol 87 (1) ◽  
Author(s):  
Valery V. Pipin
Keyword(s):  
Magnetic Field ◽  
Differential Rotation ◽  
Conservation Law ◽  
Large Scale ◽  
Solar Dynamo ◽  
Magnetic Helicity ◽  
Dynamo Model ◽  
Density Distributions ◽  
Large Scale Magnetic Field ◽  
Helicity Conservation

We study the helicity density patterns which can result from the emerging bipolar regions. Using the relevant dynamo model and the magnetic helicity conservation law we find that the helicity density patterns around the bipolar regions depend on the configuration of the ambient large-scale magnetic field, and in general they show a quadrupole distribution. The position of this pattern relative to the equator can depend on the tilt of the bipolar region. We compute the time–latitude diagrams of the helicity density evolution. The longitudinally averaged effect of the bipolar regions shows two bands of sign for the density distributions in each hemisphere. Similar helicity density patterns are provided by the helicity density flux from the emerging bipolar regions subjected to surface differential rotation.

scholarly journals Primordial magnetic helicity evolution with a homogeneous magnetic field from inflation

2020 ◽  
Vol 102 (2) ◽  
Author(s):  
Axel Brandenburg ◽  
Ruth Durrer ◽  
Yiwen Huang ◽  
Tina Kahniashvili ◽  
Sayan Mandal ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Homogeneous Magnetic Field ◽  
Magnetic Helicity

The Dynamo-Driven Magnetic Helicity Transport

1998 ◽  
Vol 29 (1) ◽  
pp. 125-132
Author(s):  
X.M. Qiu ◽  
A.K. Wang
Keyword(s):  
Magnetic Helicity

scholarly journals Magnetic Field Confinement in the Corona: The Role of Magnetic Helicity Accumulation

2006 ◽  
Vol 644 (1) ◽  
pp. 575-586 ◽  
Author(s):  
Mei Zhang ◽  
Natasha Flyer ◽  
Boon Chye Low
Keyword(s):  
Magnetic Field ◽  
Magnetic Helicity
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