Results 31 to 40 of about 3,457 (163)
The Astrophysical JournalDifferential rotation is one of the basic characteristics of the Sun, and it plays an important role in generating the magnetic fields and its activities.
Hema Kharayat +3 more
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The solar differential rotation in the 18th century [PDF]
Astronomy & Astrophysics, 2012 The sunspot drawings of Johann Staudacher of 1749--1799 were used to determine the solar differential rotation in that period. These drawings of the full disk lack any indication of their orientation. We used a Bayesian estimator to obtain the position angles of the drawings, the corresponding heliographic spot positions, a time offset between the ...
Arlt, R., Froehlich, H. -E.
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Frontiers in Astronomy and Space Sciences, 2022 Rossby waves have been recently recognised for their role in the large-scale spatio-temporal organisation of the solar magnetic activity. Here, we study the propagation of magnetohydrodynamic Rossby waves in a thin layer, representing the solar ...
André S. W. Teruya +2 more
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DIFFERENTIAL ROTATION OF THE ULTRAVIOLET CORONA AT SOLAR MAXIMUM
The Astrophysical Journal, 2011 Synoptic observations of the O VI 1032 A spectral line from the UltraViolet Coronagraph Spectrometer (UVCS) telescope on board the Solar and Heliospheric Observatory (SOHO) have been analyzed in order to establish the rotational characteristics of the solar corona in the time interval from 1999 March 18 to 2002 December 31, corresponding to the maximum
Salvatore Mancuso, Silvio Giordano
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The Astrophysical JournalChromospheric differential rotation is a key component in comprehending the atmospheric coupling between the chromosphere and the photosphere at different phases of the solar cycle. In this study, we therefore utilize the newly calibrated multidecadal Ca
Dibya Kirti Mishra +7 more
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Towards inertial-mode helioseismology: Direct sensing of solar rotation at 75° latitude and 0.8 R⊙
Astronomy & AstrophysicsContext. Because solar global inertial modes are highly sensitive to differential rotation, they may provide new diagnostics of internal rotation at high latitudes, where acoustic-mode helioseismology provides only weak constraints. Aims.
Dey Prithwitosh +2 more
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SoHO/EIT, Stereo-A, and SDO/AIA View for Solar Coronal Differential Rotation [PDF]
Iranian Journal of Astronomy and AstrophysicsDifferential rotation of the solar corona is challenging due to the nature of short-wavelength emissions. In this study, we aim to measure coronal differential rotation from different perspectives using observations from SoHO/EIT at 195 Å, Stereo-A/EUVI ...
Zahra Shokri +4 more
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Periodic Change of Solar Differential Rotation [PDF]
The Astrophysical Journal, 2005 The periodic oscillation of the inhomogeneous rotation of the Sun is studied by use of the MHD dynamo theory. There exists a turbulent electromotive force that is driven by the vorticity of the flow (i.e., the γ dynamo). In addition, its counterpart exists in the vorticity equation, that is, the rotation is induced by an inhomogeneous magnetic field in
S.‐I. Itoh +3 more
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The Differential Rotation of the Solar Surface
The Astrophysical Journal, 1974 The large-scale flow in the solar convection zone is discussed. The objective is to deduce from observation the principal physical balances in the governing equations. The simplest set of equations that seem potentially realistic are utilized.
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The Astrophysical JournalThe daily measurements of the disk-integrated solar radio flux, observed by the Radio Solar Telescope Network, at 245, 410, 610, 1415, 2695, 4995, and 8800 MHz during the time interval of 1989 January 1 to 2019 December 17, are used to investigate the ...
N. B. Xiang +5 more
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