Results 41 to 50 of about 4,752 (297)

Rotating Turbulent Thermal Convection and Solar Differential Rotation

, 2022
The expansion of the rotating fluid will change the vorticity and rotational speed of the expanding region. In turbulent thermal convection, this microscopic effect is preserved. Tracking the fluid micelles shows that the average vorticity varies with density, producing vorticity transport and angular momentum transport from the low-density area to the
Chen, Haibin, Wu, Rong
openaire   +2 more sources

The impact of differential rotation on the stochastic excitation of acoustic modes in solar-like pulsators

Astronomy & Astrophysics
Context. Acoustic modes are excited by turbulent convection in the outer convective envelope of solar-like stars. Observational results from asteroseismic studies have shown that 44% of solar-like stars do not present detectable stochastically excited ...
Biscarrat G., Bessila L., Mathis S.
doaj   +1 more source

V889 Her: abrupt changes in the magnetic field or differential rotation?

The Open Journal of Astrophysics, 2022
We have applied Zeeman-Doppler imaging (ZDI) to an extensive spectropolarimetric HARPSpol data set of the magnetically active young solar analogue V889 Her, covering 35 spectra obtained during six nights in May 2011.
Teemu Willamo, Thomas Hackman, Jyri J. Lehtinen, Maarit Korpi-Lagg, Oleg Kochukhov   +4 more
doaj   +1 more source

Magnetically controlled stellar differential rotation near the transition from solar to anti-solar profiles

, 2015
VK: Karhunen, J.; ReSoLVEContext. Late-type stars rotate differentially owing to anisotropic turbulence in their outer convection zones. The rotation is called solar-like (SL) when the equator rotates fastest and anti-solar (AS) otherwise.
Pelt, J., M. J. Käpylä, Käpylä, Maarit J., Brandenburg, Axel,, Olspert, N., Karak, Bidya Binay,, B. B. Karak, A. Brandenburg, Kapyla, P. J., J. Pelt, Karak, Bidya B., Brandenburg, Axel, P. J. Käpylä, Käpylä, Petri J., Kapyla, M. J., Karak, B. B., N. Olspert   +16 more
core   +1 more source

Ray Tracing of MHD Rossby Waves in the Solar Tachocline: Meridional Propagation and Implications for the Solar Magnetic Activity

Frontiers in Astronomy and Space Sciences, 2022
Rossby waves have been recently recognised for their role in the large-scale spatio-temporal organisation of the solar magnetic activity. Here, we study the propagation of magnetohydrodynamic Rossby waves in a thin layer, representing the solar ...
André S. W. Teruya, Breno Raphaldini, Carlos F. M. Raupp   +2 more
doaj   +1 more source

Encyclopedia of 2D β′‐In2Se3 Growth Using Chemical Vapor Deposition: The Effects of Synthesis Parameters Onto Material Quality

Advanced Engineering Materials, EarlyView.
A distinct semi‐confined inner‐tube chemical vapor deposition geometry enables reproducible, large‐area growth of phase‐pure 2D β′‐In2Se3 from InI + Se precursors. Engineering local vapor transport and optimizing precursor delivery and temperature–time conditions yield uniform continuous films.
Dasun P. W. Guruge, P. Sanju S. Panawala, Joseph F. S. Fernando, Zhenhuan Chen, Chao Zhang, Dong‐Chen Qi, Liangzhi Kou, Konstantin L. Firestein, Dmitri V. Golberg   +8 more
wiley   +1 more source

Biomass Native Structure Into Functional Carbon‐Based Catalysts for Fenton‐Like Reactions

Advanced Functional Materials, EarlyView.
This study indicates that eight biomasses with 2D flaky and 1D acicular structures influence surface O types, morphology, defects, N doping, sp2 C, and Co nanoparticles loading in three series of carbon, N‐doped carbon, and cobalt/graphitic carbon. This work identifies how these structural factors impact catalytic pathways, enhancing selective electron
Wenjie Tian, Jingkai Lin, Zhihao Tian, Selusiwe Ncube, Huayang Zhang, Emiliano Cortés, Hongqi Sun, Shaobin Wang   +7 more
wiley   +1 more source

Solar Rotation and Activity for Cycle 24 from SDO/AIA Observations

The Astrophysical Journal
Differential rotation plays a crucial role in the dynamics of the Sun. We study the solar rotation and its correlation with solar activity by applying a modified machine learning algorithm to identify and track coronal bright points (CBPs) from the Solar
Zahra Shokri, Nasibe Alipour, Hossein Safari   +2 more
doaj   +1 more source

Differential rotation of the solar corona: A new data-adaptive multiwavelength approach

, 2020
Context. The characterization of the differential rotation of the extended corona is still lacking conclusive results about the actual rotation rate profiles, and it is also expected to vary along the solar cycle.
S. Mancuso, D. Barghini, D. Telloni, S. Giordano   +3 more
core   +1 more source

Equator to Pole Solar Chromospheric Differential Rotation Using Ca-K Features Derived from Kodaikanal Data

The Astrophysical Journal
Differential rotation is one of the basic characteristics of the Sun, and it plays an important role in generating the magnetic fields and its activities.
Hema Kharayat, Jagdev Singh, Muthu Priyal, B. Ravindra   +3 more
doaj   +1 more source