Results 41 to 50 of about 1,810 (211)
Rotation curve of our Galaxy and field galaxies [PDF]
Symposium - International Astronomical Union, 2004 We present a database of galaxies rotation curve (from Hα observations), including our Galaxy.
D. Russeil +3 more
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Relativistic corrections to the rotation curves of disk galaxies [PDF]
The European Physical Journal C, 2021 AbstractWe present a method to investigate relativistic effects arising from large masses. The method is non-perturbative and employs a mean-field approximation and gravitational lensing. Using this method and a basic model of disk galaxy, we find that relativistic corrections to the rotation curves of disk galaxies are significant at large galactic ...
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Mass Distribution in Rotating Thin-Disk Galaxies According to Newtonian Dynamics
Galaxies, 2014 An accurate computational method is presented for determining the mass distribution in a mature spiral galaxy from a given rotation curve by applying Newtonian dynamics for an axisymmetrically rotating thin disk of finite size with or without a central ...
James Q. Feng, C. F. Gallo
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Imprint of Pressure on Characteristic Dark Matter Profiles: The Case of ESO0140040
Galaxies, 2020 We investigate the dark matter distribution in the spiral galaxy ESO0140040, employing the most widely used density profiles: the pseudo-isothermal, exponential sphere, Burkert, Navarro-Frenk-White, Moore and Einasto profiles.
Kuantay Boshkayev +4 more
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An Updated View of the Milky Way from Maser Astrometry
Universe, 2022 Astrometric observations of maser sources in the Milky Way, using the Very Long Baseline Interferometry (VLBI) technique, have been exploited to determine the spiral structure of our Galaxy. Several major spiral arms have now been pinpointed in the first
Katharina Immer, Kazi L. J. Rygl
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The Astrophysical Journal, 2023 We investigate the resolved kinematics of the molecular gas, as traced by the Atacama Large Millimeter/submillimeter Array in CO (2−1), of 25 cluster member galaxies across three different clusters at a redshift of z ∼ 1.6.
W. J. Cramer +16 more
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The universal galaxy rotation curve
The Astrophysical Journal, 1991 From the analysis of an extended set of selected galaxy rotation curves, it is found that for a given luminosity the rotation curves of spiral galaxies within the optical radius are a universal function. This result implies strong systematic variations of both the amplitude and the profil of the circular velocity with luminosity faint (bright) galaxies
Persic, M., Salucci, P.
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Gravitomagnetism and galaxy rotation curves: a cautionary tale
Classical and Quantum Gravity, 2023 Abstract We investigate recent claims that gravitomagnetic effects in linearised general relativity can explain flat and rising rotation curves, such as those observed in galaxies, without the need for dark matter. If one models a galaxy as an axisymmetric, stationary, rotating, non-relativistic and pressureless ‘dust’ of stars in the ...
A N Lasenby, M P Hobson, W E V Barker
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The universal rotation curve of dwarf disc galaxies [PDF]
Monthly Notices of the Royal Astronomical Society, 2016 We use the concept of the spiral rotation curves universality to investigate the luminous and dark matter properties of the dwarf disc galaxies in the local volume (size $\sim11$ Mpc). Our sample includes 36 objects with rotation curves carefully selected from the literature.
Paolo Salucci +2 more
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Reports in Advances of Physical Sciences, 2020 It is an unsolved mystery that the rotation velocity of a galactic disc is same at any radial distances. The presence of dark matter is expected, but not observed.
Shigeto Nagao
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