Results 11 to 20 of about 243,256 (287)
Helioseismic evidence that the solar dynamo originates near the tachocline [PDF]
Scientific ReportsThe exact location of the solar dynamo remains uncertain–whether it operates primarily in the near-surface shear layer, throughout the entire convection zone, or near the tachocline - a region of sharp transition in the solar rotation, located at the ...
Krishnendu Mandal +1 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
openaire +4 more sources
Solar Dynamics, Rotation, Convection and Overshoot [PDF]
Space Science Reviews, 2015 We discuss recent observational, theoretical and modeling progress made in understanding the Sun's internal dynamics, including its rotation, meridional flow, convection and overshoot.
Hanasoge, S. +5 more
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Solar Interior Rotation and its Variation
Living Reviews in Solar Physics, 2009 This article surveys the development of observational understanding of the interior rotation of the Sun and its temporal variation over approximately forty years, starting with the 1960s attempts to determine the solar core rotation from oblateness and ...
Howe Rachel
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Radial gradient of the solar rotation rate in the near-surface shear layer of the Sun
Frontiers in Astronomy and Space Sciences, 2022 We study the radial gradient of the solar rotation rate in the near-surface shear layer (NSSL) from about .950 R⊙ to the solar surface and its variation during Solar Cycles 23 and 24 with ring-diagram analysis applied to Global Oscillation Network Group (
Rudolf Komm
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Rotational Characteristics of the Solar Transition Region Using SDO/AIA 304 Å Images
The Astrophysical Journal, 2023 To date, the rotational characteristics of the solar transition region remain unclear. In this work, by applying the flux modulation method to the images derived from the Solar Dynamics Observatory/Atmospheric Imaging Assembly between 2011 and 2022 at ...
Qian-Rui Wu +6 more
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Temporal Variation of the Rotation in the Solar Transition Region
The Astrophysical Journal Letters, 2023 The temporal variations of solar rotation in the photosphere, chromosphere, and corona have been widely investigated, whereas the rotation of the solar transition region is rarely studied. Here, we perform a primary study about the long-term variation of
Xiaojuan Zhang +4 more
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Aerospace, 2022 An attitude control strategy for an under-actuated spacecraft with two reaction wheels is proposed, using the active assistance of solar radiation pressure torque.
Lei Jin, Yingjie Li
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Solar rotation over solar cycle 21 [PDF]
International Astronomical Union Colloquium, 1991 Abstract Having measured the rotation rate of sunspots through solar cycle 21, from 1977 to 1983, we have found that the mean differential rotation averaged over this seven year record is similar to the grand average differential rotation determined by Howard et al. (1984) over the period 1921-1982.
Elisabeth Ribes +3 more
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Design of a deployment rotation mechanism for microsatellite [PDF]
International Journal for Simulation and Multidisciplinary Design Optimization, 2009 Solar array rotation mechanism provides a hinged joint between the solar panel and satellite body, smooth rotation of the solar array into deployed position and its fixation in this position.
Abdelal G. F., Bakr Elhady A., Kassab M.
doaj +1 more source