Results 31 to 40 of about 320,186 (190)
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 ...
openaire +4 more sources
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
openaire +2 more sources
The Dispersion Velocity of Galactic Dark Matter Particles [PDF]
, 1996 The self-consistent spatial distribution of particles of Galactic dark matter is derived including their own gravitational potential, as also that of the visible matter of the Galaxy.
A. Gould +29 more
core +2 more sources
Galaxy rotation curve from classical Cepheids [PDF]
, 2018 The Galaxy rotation curve is usually assumed to be flat. However, some galaxies have rotation curves that are lower than the flat rotation curve. In our Galaxy the Keplerian rotation of interstellar clouds in the galactic longitude l=135 was observed. We use a kinematic approach to derive the rotational velocity of classical Cepheids.
arxiv +1 more source
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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On the Dwarf Galaxy Rotation Curve Diversity Problem [PDF]
Galaxies, 2018 In this paper, we show how baryonic physics can solve the problem of the striking diversity in dwarf galaxy rotation curves shapes. To this aim, we compare the distribution of galaxies of the SPARC sample, in the plane V2kpc-VRlast (V2kpc being the galaxy rotation velocity at 2 kpc, and VRlast being the outermost one), with that of galaxies that we ...
Del Popolo, Antonino +2 more
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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
openaire +5 more sources
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
openaire +3 more sources
A Simple Model for Explaining Galaxy Rotation Curves [PDF]
Galaxies, 2018 A new simple expression for the circular velocity of spiral galaxies is proposed and tested against HI Nearby Galaxy Survey (THINGS) data set. Its accuracy is compared with the one coming from MOND.
Aneta Wojnar +2 more
openaire +5 more sources
Declining Rotation Curve and Brown Dwarf MACHOs [PDF]
, 1998 If the Galactic rotation speed at the Solar circle is $\sim 200$ km s$^{-1}$ or smaller, which is supported by several recent studies, the rotation curve of the Galaxy could be declining in the outermost region.
Delfosse X. +8 more
core +2 more sources