Results 31 to 40 of about 84,923 (296)
Doppler Imaging of stellar magnetic fields [PDF]
Astronomy & Astrophysics, 2002 We present an investigation of the magnetic field geometries and inhomogeneous distribution of chemical elements in the atmospheres of peculiar A and B stars. Our study combines high-quality spectroscopic and spectropolarimetric stellar observations with the development and application of novel techniques for theoretical interpretation of the shapes ...
N. Piskunov, O. Kochukhov
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Catalog of Magnetic White Dwarfs with Hydrogen Dominated Atmospheres
The Astrophysical Journal, 2023 White dwarfs are excellent research laboratories as they reach temperatures, pressures, and magnetic fields that are unattainable on Earth. To better understand how these three physical parameters interact with each other and with other stellar features,
L. L. Amorim +4 more
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Recent Measurements of Stellar Magnetic Fields [PDF]
Symposium - International Astronomical Union, 1991 High resolution, high S/N spectra have been successfully modeled to yield information on the magnetic properties of cool stars for some 15 years now. These analyses yield estimates of the intensity weighted surface filling factor of active regions, f, and the mean unsigned field strength in these regions), B.
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M-dwarf stellar winds: the effects of realistic magnetic geometry on rotational evolution and planets [PDF]
, 2013 We perform three-dimensional numerical simulations of stellar winds of early-M dwarf stars. Our simulations incorporate observationally reconstructed large-scale surface magnetic maps, suggesting that the complexity of the magnetic field can play an ...
Donati, J. F. +5 more
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On the Effect of Magnetic Spots on Stellar Winds and Angular Momentum Loss
, 2009 We simulate the effect of latitudinal variations in the location of star spots, as well as their magnetic field strength, on stellar angular momentum loss to the stellar wind.
Antia +32 more
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Origin and evolution of magnetic fields in PMS stars : influence of rotation and structural changes
, 2017 During stellar evolution, especially in the PMS, stellar structure and rotation evolve significantly causing major changes in the dynamics and global flows of the star.
Brun, Allan Sacha +1 more
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18. Stellar magnetic fields [PDF]
Symposium - International Astronomical Union, 1958 A report is given of a ten-year observational program directed toward the discovery and investigation of the magnetic fields of stars through the Zeeman effect in their spectra. The emphasis has been on the sharp-line stars of type A, of which ten have been found to show irregular magnetic fluctuations without reversal of polarity, ten others to ...
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Masers and Stellar Magnetic Fields [PDF]
Symposium - International Astronomical Union, 1990 Observations of circular polarization of molecular masers associated with late type giant and supergiant stars can be used to estimate the magnetic field strength in the masing region. Magnetic field strengths of ~ 5 mG are deduced for OH masers in circumstellar envelopes at distances of ~ 1016 cm from the star, and magnetic field strengths of ~ 50 G ...
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Simulations of facular magnetic fields on cool stars
Astronomy & AstrophysicsContext. Stellar convection in the presence of magnetic field affects the emergent intensity, as well as the structure and evolution of cool main-sequence dwarfs. Aims.
Singh Bhatia Tanayveer +6 more
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What is the magnetic field distribution for the equation of state of magnetized neutron stars?
Physics Letters B, 2017 In this Letter, we report a realistic calculation of the magnetic field profile for the equation of state inside strongly magnetized neutron stars. Unlike previous estimates, which are widely used in the literature, we find that magnetic fields increase ...
V. Dexheimer +5 more
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