Results 21 to 30 of about 2,991,320 (323)
V889 Her: abrupt changes in the magnetic field or differential rotation? [PDF]
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 +4 more
doaj +2 more sources
INTERNAL-CYCLE VARIATION OF SOLAR DIFFERENTIAL ROTATION [PDF]
The Astrophysical Journal Supplement Series, 2013 The latitudinal distributions of the yearly mean rotation rates measured by Suzuki in 1998 and 2012 and Pulkkinen & Tuominen in 1998 are utilized to investigate internal-cycle variation of solar differential rotation.
K.-J. Li, J.-L. Xie, X.-J. Shi
semanticscholar +4 more sources
The Astrophysical JournalThe daily measurements of the disk-integrated solar radio flux, observed by the Radio Solar Telescope Network, at 245, 410, 610, 1415, 2695, 4995, and 8800 MHz during the time interval of 1989 January 1 to 2019 December 17, are used to investigate the ...
N. B. Xiang +5 more
doaj +2 more sources
Measurements of Solar Differential Rotation Using the Century Long Kodaikanal Sunspot Data [PDF]
, 2021 The rotational profile of the Sun is considered to be one of the key inputs in a solar dynamo model. Hence, precise and long-term measurements of this quantity is important for our understanding of solar magnetism and its variability.
B. K. Jha +4 more
semanticscholar +1 more source
Periodic Change of Solar Differential Rotation
Periodic Change of Solar Differential Rotation"The periodic oscillation of the inhomogeneous rotation of the sun is studied by use of the MHD dynamo theory. There exists a turbulent electromotive force which is driven by the vorticity of the flow (i.e., the gamma dynamo).
Yokoi, N." +3 more
openaire +2 more sources
Fluids, 2023 Contemporary three-dimensional physics-based simulations of the solar convection zone disagree with observations. They feature differential rotation substantially different from the true rotation inferred by solar helioseismology and exhibit a conveyor ...
Parag Gupta +2 more
doaj +1 more source
Long–Term Variations in Solar Differential Rotation and Sunspot Activity, II: Differential Rotation Around the Maxima and Minima of Solar Cycles 12 – 24 [PDF]
Solar Physics, 2020 Studies of variations in the solar differential rotation are important for understanding the underlying mechanism of solar cycle and other variations of solar activity.
J. Javaraiah
semanticscholar +1 more source
Solar-like to Antisolar Differential Rotation: A Geometric Interpretation [PDF]
Astrophysical Journal, 2022 The solar convection zone rotates differentially, with its equatorial region rotating more rapidly than the polar regions. This form of differential rotation, also observed in many other low-mass stars, is understood to arise when Coriolis effects are ...
M. Camisassa, N. Featherstone
semanticscholar +1 more source
Differential rotation of the solar transition region from STEREO/EUVI 30.4-nm images [PDF]
Monthly notices of the Royal Astronomical Society, 2021 The solar photosphere, chromosphere, and corona are known to rotate differentially as a function of latitude. To date, it is unclear whether the solar transition region also rotates differentially.
Jaidev Sharma +3 more
semanticscholar +1 more source
Transition of latitudinal differential rotation as a possible cause of weakened magnetic braking of solar-type stars [PDF]
, 2022 We investigate the role of latitudinal differential rotation (DR) in the spin evolution of solar-type stars. Recent asteroseismic observation detected the strong equator-fast DR in some solar-type stars. Numerical simulations show that the strong equator-
Takato Tokuno, T. Suzuki, M. Shoda
semanticscholar +1 more source