Results 21 to 30 of about 242,574 (198)
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.
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Solar rotation rate and its gradients during cycle 23 [PDF]
, 2008 Available helioseismic data now span almost the entire solar activity cycle 23 making it possible to study solar-cycle related changes of the solar rotation rate in detail.
Antia H. M. +8 more
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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
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Rotation suppresses giant-scale solar convection [PDF]
Proceedings of the National Academy of Sciences, 2021 Significance The entire Sun completes a full rotation in roughly 28 d. Within the outer 30% of the solar interior, turbulent thermal convection powers fluid outward. Rotation deflects the fluid and determines the morphology of eddies and large-scale shear.
Geoffrey M. Vasil +2 more
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Solar-cycle-related variation of solar differential rotation [PDF]
Monthly Notices of the Royal Astronomical Society, 2013 19 pages, 8 figures, accepted by MNRAS.
Li, K. J. +6 more
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Flare differentially rotates sunspot on Sun's surface [PDF]
, 2016 Sunspots are concentrations of magnetic field visible on the solar surface (photosphere). It was considered implausible that solar flares, as resulted from magnetic reconnection in the tenuous corona, would cause a direct perturbation of the dense ...
Cao, Wenda +9 more
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Changes in Solar Rotation over Two Solar Cycles [PDF]
The Astrophysical Journal, 2019 Abstract We use helioseismic data from ground- and space-based instruments to analyze how solar rotation has changed since the beginning of solar Cycle 23 with emphasis on studying the differences between Cycles 23 and 24. We find that the nature of solar rotation is indeed different for the two cycles.
Sarbani Basu, H. M. Antia
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The Relative Position of the Solar Magnetic Dipole Axis and Rotation Axis of the Sun
GalaxiesWe estimated the relative location of the solar rotation axis and the magnetic axis of the solar dipole, which were defined as centers of polar coronal holes.
Alexandr Riehokainen +3 more
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Transactions of the International Astronomical Union, 1985 The study of solar rotation using the Doppler effect in solar spectrum lines continues to be an active and fruitful area of research. Duvall (1982) has confirmed a slower rotation rate for the photosphere than for sunspots, which bears on an earlier controversy regarding this point between the Stanford Solar Observatory and some other observatories ...
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Solar surface rotation: N-S asymmetry and recent speed-up
, 2015 Context. The relation between solar surface rotation and sunspot activity still remains open. Sunspot activity has dramatically reduced in solar cycle 24 and several solar activity indices and flux measurements experienced unprecedentedly low levels ...
Mursula, K., Usoskin, I., Zhang, L.
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