Evidence of a Quasiperiodic Global-scale Oscillation in the Near-surface Shear Layer of the Sun
The Astrophysical Journal Letters, 2023 We present evidence of hitherto undiscovered global-scale oscillations in the near-surface shear layer of the Sun. These oscillations are seen as large-scale variations of radial shear in both the zonal and meridional flows relative to their mean values.
Richard S. Bogart +4 more
doaj +1 more source
Influence of projection effects on the observed differential rotation rate in the UV corona
Journal of Advanced Research, 2013 Following previous investigations by Giordano and Mancuso [1] and Mancuso and Giordano [2,3] on the differential rotation of the solar corona as obtained through the analysis of the intensity time series of the O VI 1032 Å spectral line observed by the ...
Salvatore Mancuso, Silvio Giordano
doaj +1 more source
Solar cycle-related variation in solar differential rotation and meridional flow in solar cycle 24
Earth, Planets and Space, 2020 We studied temporal variation of the differential rotation and poleward meridional circulation during solar cycle 24 using the magnetic element feature tracking technique.
Shinsuke Imada +3 more
doaj +1 more source
Exploring the Temporal Variation of the Solar Quadrupole Moment J 2
The Astrophysical Journal, 2023 Recently, Rozelot & Eren pointed out that the first solar gravitational moment ( J _2 ) might exhibit a temporal variation. The suggested explanation is through the temporal variation of the solar rotation with latitude.
Saliha Eren, Jean-Pierre Rozelot
doaj +1 more source
MODELING OF DIFFERENTIAL ROTATION IN RAPIDLY ROTATING SOLAR-TYPE STARS [PDF]
The Astrophysical Journal, 2011 36 pages, 10 figures, accepted to ...
Hotta, Hideyuki, Yokoyama, Takaaki
openaire +2 more sources
Differential Rotation for Different-sized Sunspot Groups Early Observed by the OGAUC
The Astrophysical Journal, 2023 Solar differential rotation is an important ingredient of the solar dynamo model, not only because the solar rotation profile is one of the key inputs in a solar dynamo model, but also because it imposes constraints for the solar dynamo model.
Miao Wan +3 more
doaj +1 more source
Magnetic fields and differential rotation on the pre-main sequence – II. the early-G star HD 141943 – coronal magnetic field, Hα emission and differential rotation [PDF]
, 2011 Spectropolarimetric observations of the pre-main sequence early-G star HD 141943 were made at three observing epochs (2007, 2009 and 2010). The observations were made using the 3.9-m Anglo-Australian Telescope with the UCLES echelle spectrograph and the ...
Semel, Meir +33 more
core +1 more source
Activity and differential rotation of the early M dwarf Kepler-45 from transit mapping [PDF]
, 2020 Little is known of the activity and differential rotation of low luminosity, early M dwarfs from direct observation. We present the first stellar activity analysis of star-spots and faculae for the hot Jupiter hosting M1V dwarf Kepler-45 from Kepler ...
Zaleski, S. M. +3 more
core +1 more source
Surface differential rotation and photospheric magnetic field of the young solar-type star HD 171488 (V889 Her) [PDF]
, 2006 We present spectropolarimetric observations of the young, single early G-dwarf HD 171488. These observations were obtained over a five-night period in 2004 September at the 3.9-m Anglo-Australian Telescope using the SEMPOL spectropolarimeter visitor ...
Donati, J-F. +7 more
core +1 more source
Optical control of solar sails using distributed reflectivity [PDF]
, 2014 The dynamics of solar sails with a variable surface reflectivity distribution are investigated. When changing the reflectivity across the sail film, which can be achieved using electro-chromic coatings, the solar radiation pressure forces and torques ...
Jeannette Heiligers +12 more
core +3 more sources