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The solar differential rotation from the eightteenth solar cycle
Astrophysics and Space Science, 1982The sidereal daily rotation of the Sun, ζ(φ), depends on the data used. From an appropriate selection of the data — sunspots with regular motion — it is found that ζ(φ)=14.31–2.70 sin2 φ, where φ denotes the heliographic latitude. Moreover, it seems that there is a variation, of the order of 3%, with the solar activity.
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The solar differential rotation: a historical view
Astrophysics and Space Science, 2009This brief historical review covers the period preceding the advent of helioseismology, when the author actively worked in the field of solar differential rotation and knowledge of the Sun’s dynamics was limited to the observations of surface phenomena, while the interpretation of the internal rotation was demanded solely to theoretical conjectures ...
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Models of solar differential rotation
1984o-.rr rcdels give the deperrdence of the angular velocity at the Sunis equator on the depth of the convecÈion zcne. In order to drive differential rotation we ccnsidered two different rnechanisxns: latirude depe:rience of the n:xj"ng length and the anisoircpy of :ie turbulent viscosity.
Pidatella, Rosa Maria +3 more
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CCD-Doppler measurements of solar differential rotation
Solar Physics, 1996Using the AT1 CCD camera at the Echelle spectrograph of the GCT at Tenerife, solar Doppler rotation measurements in the photospheric lines Fe I 6301.5 A and 6302.5 A and in the chromospheric line Na-D2 5890.0 A have been made. The line shifts measured at different heliographic latitudes around the limb were corrected for observer motion and converted ...
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Differential coronal rotation and solar activity
2012We investigated the latitudinal variation in the coronal rotation by using observations taken with Nobeyama Radioheliograph (NoRH) at 17 GHz. The time series bins are formed on different latitude regions of the solar full disc (SFD) radio image, which extend up to ±60◦ in both the hemispheres.
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Hydrodynamical Investigation of the Solar Differential Rotation
Publications of the Astronomical Society of Japan, 1966Abstract The differential rotation of the sun is investigated from Biermann’s viewpoint which ascribes its cause to the non-isotropy of the eddy viscosity. The hydrogen convection layer is considered to be a thin layer rotating independently of the inner stable region, and its rotational motion is investigated on the basis of Wasiutyński’
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Solar differential rotation reproduced with high-resolution simulation
Nature Astronomy, 2021Hideyuki Hotta, Kanya Kusano
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Solar differential rotation analysis from Kanzelhöhe sunspot drawings
2014Within the project intended to investigate the behavior of the solar differential rotation during several cycles we plan to process Kanzelhöhe sunspot drawings (Sonnenobservatorium Kanzelhöhe, University of Graz, Austria) for solar cycles nos. 20 - 24. As part of this analysis, we present here the results for the solar cycles no. 20 and no. 22.
Jurdana-Šepić, Rajka +3 more
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Asteroseismic detection of latitudinal differential rotation in 13 Sun-like stars
Science, 2018Othman Benomar +2 more
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Hypercalcemia and cancer: Differential diagnosis and treatment
Ca-A Cancer Journal for Clinicians, 2018Sarah B Fisher, Nancy D Perrier, Facs
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