Results 141 to 150 of about 71,111 (245)
, 2022 The most important theory of the spiral arms of galaxies is the density wave theory based on the Lin-Shu dispersion relation. However, the density waves move with the group velocity towards the inner Lindblad resonance and tend to disappear. Various mechanisms to replenish the spiral waves have been proposed.
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Can the Dynamo of Spiral-arm Galaxies Be Explained by Anisotropic Conductivity?
The Astrophysical JournalThe possibility of generating a magnetic field by a dynamo effect with anisotropic electrical conductivity rather than turbulent flow has been demonstrated theoretically and experimentally.
Paul Gomez +2 more
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Radio Properties of Active Nearby Spiral Galaxies [PDF]
, 1978 A. G. de Bruyn
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The Astrophysical JournalThe majority of disk galaxies manifest spirals and/or bars that are believed to result from dynamical instabilities. However, some galaxies have featureless disks, which are therefore inferred to be dynamically stable.
J. A. Sellwood, R. G. Carlberg
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Distribution of Dust and H II Regions in Spiral Galaxies [PDF]
, 1972 B. T. Lynds
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Structure of the Spiral Galaxy NGC 300 [PDF]
Journal of Astronomy and Space Sciences, 1992 In 1963, Toomre built up classes of mass models for the highly flattened galaxies which have free parameters n, an and Cn. In order to keep the universal dimension, we adopt parameters bn(Cn2 = an2n+2*bn2/(n-1)!) instead of Cn.
Myung-Hyun Rhee, Mun-Suk Chun
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Rotation curves of high-luminosity spiral galaxies and the rotation curve of our galaxy [PDF]
, 1979 Vera Rubin
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Polarized thermal emission from dust in a galaxy at redshift 2.6. [PDF]
Nature, 2023 Geach JE +7 more
europepmc +1 more source
Remarks on the reduction of radial velocities within spiral galaxies
, 1955 Jürgen Stock
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Causal Discovery in Astrophysics: Unraveling Supermassive Black Hole and Galaxy Coevolution
The Astrophysical JournalCorrelation does not imply causation, but patterns of statistical association between variables can be exploited to infer a causal structure (even with purely observational data) with the burgeoning field of causal discovery.
Zehao Jin +11 more
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