Results 71 to 80 of about 1,810 (211)
Role of Gaseous Disk in the Formation of the Spiral Structure of the Milky Way Galaxy
Open Astronomy, 2016 We use observational gaseous and stellar density distributions in the disk of the Milky Way (MW) galaxy together with the disk rotation curve and measured disk velocity dispersion to build collisionless and combined collisionless-gaseous equilibrium ...
Korchagin V. I. +2 more
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On the Rotation Curve of Disk Galaxies in General Relativity
The Astrophysical Journal, 2022 Abstract Recently, it has been suggested that the phenomenology of flat rotation curves observed at large radii in the equatorial plane of disk galaxies can be explained as a manifestation of general relativity (GR) instead of the effect of dark matter (DM) halos.
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The Astrophysical JournalWe use the IllustrisTNG cosmological hydrodynamical simulation to study the rotation curves of galaxies in the local universe. To do that, we first select the galaxies with 9.4
Daeun Jeong +3 more
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Square–torsion gravity, dark matter halos and the baryonic Tully–Fisher relation
European Physical Journal C: Particles and Fields, 2020 Square–torsion gravity is applied to the long standing dark matter problem. In this context the theory reduces to General Relativity complemented by a dark stress–energy tensor due to the torsion of spacetime and is studied under the simplifying ...
Elias A. S. Mégier
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Towards the Explanation of Flatness of Galaxies Rotation Curves
Universe, 2022 We suggest a new explanation of the flatness of galaxies rotation curves without invoking dark matter. For this purpose, a new gravitational tensor field is introduced in addition to the metric tensor.
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An Edge-on Regular Disk Galaxy at z = 5.289
The Astrophysical JournalWhile rotation-supported gas disks are known to exist as early as at z ≈ 7, it is still a general belief that stellar disks form late in the Universe.
Haojing Yan +2 more
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Central Rotation Curves of Galaxies
, 2000 4 pages, 4 figures, in "Galaxy Disks and Disk Galaxies", ASP Conf. Series, Vatical Conf. Rome 2000, eds. J.
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The Survival of the Sagittarius Dwarf Galaxy and the Flatnessof the Rotation Curve of the Galaxy [PDF]
The Astrophysical Journal, 1998 How has the ``fluffy'' core of the Sgr dwarf galaxy survived multiple strong shocks from the tidal force of the Galactic halo and disc since the formation of the core a Hubble time ago? A scenario that Sgr was deflected to its current orbit by the Magellanic Clouds after a rendezvous on the north Galactic pole 2-3 Gyrs ago is examined. It is shown that
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Galaxy rotation curves. The theory
, 2013 The non-gauge vector field with as simple as possible Lagrangian (\ref{Lagrangian}) turned out an adequate tool for macroscopic description of the main properties of dark matter. The dependence of the velocity of a star on the radius of the orbit $V\left(r\right) $ -- galaxy rotation curve -- is derived analytically from the first principles ...
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On the formation of galaxies with flat rotation curves
The Astrophysical Journal, 1986 The dynamical development of a gravitationally unstable, initially uniform, collision-free medium has been studied by means of fully self-consistent three-dimensional numerical experiments. The system is encouraged to form just one blob by means of a small density bump, and its collapse is followed until a steady state has been reached.
R. H. Miller, B. F. Smith
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