Results 51 to 60 of about 3,457 (163)
Spectroscopic Observations of Differential Rotation With Height in the Solar Envelope [PDF]
International Astronomical Union Colloquium, 1970 AbstractThe problem of determining the spectroscopic rotation of the sun is not one of instrumental sensitivity, which can be about 10 m/sec, but rather of abstracting the rotational component from the hierarchy of long-lived surface currents. Required are continued daily observations over long periods of time and this task is not presently feasible at
openaire +1 more source
Differential Rotation of CoRoT Stars and a Kepler Binary Star from Starspot Transit Mapping
The Astrophysical JournalWhile direct magnetic field measurements are rare for slowly rotating stars, spots observed during planetary transits provide a potential indicator of magnetic activity on stellar surfaces.
Adriana Valio +2 more
doaj +1 more source
Detection and Characterization of Thermal Rossby Waves in the Solar Interior
The Astrophysical Journal LettersSeveral classes of inertial waves have recently been detected in the Sun, with their dispersion relations providing a robust diagnostic for characterizing these modes.
Krishnendu Mandal
doaj +1 more source
Discriminating between Babcock–Leighton-type Solar Dynamo Models by Torsional Oscillations
The Astrophysical JournalThe details of the dynamo process in the Sun are an important aspect of research in solar-terrestrial physics and astrophysics. The surface part of the dynamo can be constrained by direct observations, but the subsurface part lacks direct observational ...
Congyi Zhong, Jie Jiang, Zebin Zhang
doaj +1 more source
3D pressure-corrected ballistic extrapolation of solar wind speed in the inner heliosphere
Journal of Space Weather and Space ClimateSolar wind parameters at different locations in the inner heliosphere can be estimated using various solar wind extrapolation methods. The simple ballistic method extrapolates solar wind parameters from the point of measurement to a chosen heliospheric ...
Timar Aniko +7 more
doaj +1 more source
Міжнародний науково-технічний журнал "Проблеми керування та інформатики", 2006 The Fourier analysis method of the time series is applied to the estimation of the rotation of structural formations in the Sun atmosphere, which are observed in the line НeI of 1083 nanometers from the Earth.
Ya.I. Zyelyk +2 more
doaj
The Astrophysical JournalWe carry out an unprecedented high-resolution simulation for the solar convection zone. Our calculation reproduces the fast equator and near-surface shear layer (NSSL) of differential rotation and the near-surface poleward meridional flow simultaneously.
H. Hotta
doaj +1 more source
The Astrophysical JournalWe suggest a physically motivated model of the uncorrelated background, which can be used to improve the accuracy of helioseismic frequency measurements when the background contributes significantly to the formation of spectral lines of acoustic ...
Sergei V. Vorontsov +2 more
doaj +1 more source
A Study of Solar Rotation and Differential Rotation
Journal of Applied Mathematics and Physics, 2023 openaire +1 more source
Solar Tachocline Confinement by the Nonaxisymmetric Modes of a Dynamo Magnetic Field
The Astrophysical JournalWe recently presented the first 3D numerical simulation of the solar interior for which tachocline confinement was achieved by a dynamo-generated magnetic field. In this follow-up study, we analyze the degree of confinement as the magnetic field strength
Loren I. Matilsky +3 more
doaj +1 more source