Twisted flux tube emergence evidenced in longitudinal magnetograms: magnetic tongues

ML Luoni, P Démoulin, CH Mandrini… - Solar Physics, 2011 - Springer
Bipolar active regions (ARs) are thought to be formed by twisted flux tubes, as the presence
of such twist is theoretically required for a cohesive rise through the whole convective zone …

On the injection of helicity by the shearing motion of fluxes in relation to flares and coronal mass ejections

P Vemareddy, A Ambastha, RA Maurya… - The Astrophysical …, 2012 - iopscience.iop.org
An investigation of helicity injection by photospheric shear motions is carried out for two
active regions (ARs), NOAA 11158 and 11166, using line-of-sight magnetic field …

Large-scale magnetic helicity fluxes estimated from MDI magnetic synoptic charts over the solar cycle 23

S Yang, H Zhang - The Astrophysical Journal, 2012 - iopscience.iop.org
To investigate the characteristics of large-scale and long-term evolution of magnetic helicity
with solar cycles, we use the method of Local Correlation Tracking to estimate the magnetic …

Multiscale dynamics of solar magnetic structures

VM Uritsky, JM Davila - The Astrophysical Journal, 2012 - iopscience.iop.org
Multiscale topological complexity of the solar magnetic field is among the primary factors
controlling energy release in the corona, including associated processes in the photospheric …

Propagating oscillations in the lower atmosphere under coronal holes

A Chelpanov, N Kobanov, M Chelpanov, A Kiselev - Solar Physics, 2021 - Springer
The subject of this study is oscillations in the lower atmosphere in coronal-hole regions,
where the conditions are favorable for propagation between the atmospheric layers. Based …

Propagating Oscillations in the Lower Atmosphere Under Coronal Holes

C Andrei, K Nikolai, C Maksim, K Aleksandr - Solar Physics, 2021 - search.proquest.com
The subject of this study is oscillations in the lower atmosphere in coronal-hole regions,
where the conditions are favorable for propagation between the atmospheric layers. Based …

Asymmetry of Magnetic Helicity Flux in Emerging Bipolar Active Regions

D Yang, Y Jiang, J Yang, Y Bi… - Journal of The Korean …, 2014 - koreascience.kr
We apply differential affine velocity estimator (DAVE) to the Solar Dynamics Observatory
(SDO)/Helioseismic and Magnetic Imager (HMI) 12-min line-of-sight magnetograms, and …

Dynamics of active region flux tubes in the solar convection zone

Y Fan - First Asia-Pacific Solar Physics Meeting ASI …, 2011 - adsabs.harvard.edu
I review recent results on modeling the buoyant rise of active region scale flux tubes in the
solar convective envelope based on both a thin flux tube model incorporating the effects of …