Results 11 to 20 of about 14,717 (257)
Symposium - International Astronomical Union, 1997 The rotation of the sun affects the wave propagation in the solar cavity. The measurement of the effect can be used to infer the internal rotation of the sun, and indeed much of what we know today about the dynamics of the solar interior has been derived from observation and interpretation of the rotationally induced splitting of solar p-mode ...
openaire +1 more source
Earth's Rotation and Solar Activity [PDF]
Geophysical Journal International, 1989 Summary The 11-yr signal in the variation of length of day has been successfully identified and significantly linked to solar activity. A physical mechanism involving meteorological and oceanic variation is proposed.
MAZZARELLA, ADRIANO, PALUMBO A.
openaire +3 more sources
On the Rotation of the Solar Chromosphere [PDF]
The Astrophysical Journal, 2020 Abstract Rotation is a significant characteristic of the Sun and other stars, and it plays an important role in understanding their dynamo actions and magnetic activities. In this study, the rotation of the solar chromospheric activity is investigated from a global point of view with an over 40 yr Mg ii index.
Jing-Chen Xu +2 more
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
The Rotation of the Deep Solar Layers [PDF]
The Astrophysical Journal, 2003 From the analysis of low-order GOLF+MDI sectoral modes and LOWL data (l > 3), we derive the solar radial rotation profile assuming no latitudinal dependance in the solar core. These low-order acoustic modes contain the most statistically significant information about rotation of the deepest solar layers and should be least influenced by internal ...
Couvidat, S. +5 more
openaire +2 more sources
Study on the relation of the solar coronal rotation with magnetic field structures
Scientific Reports, 2023 Daily solar spectral irradiances (SSIs) at the spectral intervals 1–40, 116–264 and 950–1600 nm and four categories of solar small-scale magnetic elements ( $$MF_{no}$$ M F no , $$MF_{anti}$$ M F anti , $$MF_{tran}$$ M F tran and $$MF_{in}$$ M F in ) are
N. B. Xiang +4 more
doaj +1 more source
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
The 27-Day Oscillation in Ionospheric Total Electron Content Observed by GNSS
AtmosphereThe 27-day oscillation in total electron content (TEC) is analysed by means of world maps of TEC. The TEC maps are derived from measurements of the ground receiver network of the Global Navigation Satellite System (GNSS) and are provided by the ...
Klemens Hocke, Guanyi Ma
doaj +1 more source
The mechanism of magnetic flux rope rotation during solar eruption
Frontiers in Physics, 2023 Solar eruptions often show the rotation of filaments, which is a manifestation of the rotation of erupting magnetic flux rope (MFR). Such a rotation of MFR can be induced by either the torque exerted by a background shear-field component (which is an ...
Zhenjun Zhou +9 more
doaj +1 more source
Field-aligned currents are strongly modulated by corotating solar wind high-speed streams
Journal of Space Weather and Space ClimateBirkeland field-aligned currents (FACs) are associated with solar wind-magnetosphere energy coupling leading to substorms/convection events. FAC intensity enhancements have been studied during geomagnetic storms driven by interplanetary coronal mass ...
Hajra Rajkumar +8 more
doaj +1 more source