Results 31 to 40 of about 2,129 (213)
The galaxy rotation curves in the $f(R,T)$ modified gravity formalism [PDF]
, 2022 Astronomical data have shown that the galaxy rotation curves are mostly flat in the far distance of the galactic cores, which reveals the insufficiency of our knowledges about how gravity works in these regimes. In this paper we introduce a resolution of
Moraes, P. H. R. S., Shabani, H.
core +2 more sources
Baryonic clues to the puzzling diversity of dwarf galaxy rotation curves [PDF]
, 2020 We use a compilation of disc galaxy rotation curves to assess the role of the luminous component (‘baryons’) in the rotation curve diversity problem. As in earlier work, we find that rotation curve shape correlates with baryonic surface density: high ...
Navarro, Julio F. +9 more
core +2 more sources
Confronting the Diversity Problem: The Limits of Galaxy Rotation Curves as a Tool to Understand Dark Matter Profiles [PDF]
The Astrophysical JournalWhile galaxy rotation curves (RCs) provide one of the most powerful methods for measuring dark matter profiles in the inner regions of rotation-supported galaxies, at the dwarf scale there are factors that can complicate this analysis.
Isabel S. Sands +11 more
doaj +3 more sources
Rotation Curves of High-Luminosity Spiral Galaxies and the Rotation Curve of our Galaxy [PDF]
Symposium - International Astronomical Union, 1979 Rotation curves of high luminosity spiral galaxies are flat, to distances as great as r=49 kpc. This implies a significant mass at large r. Rotational velocities increase about 20 km/s across a spiral arm, as predicted by the density wave theory. By analogy, it is suggested that our Galaxy has a flat rotation curve out to r∼60 kpc, with V ∼ constant at
openaire +1 more source
Rotation Curves of Spiral Galaxies [PDF]
Annual Review of Astronomy and Astrophysics, 2001 ▪ Abstract Rotation curves of spiral galaxies are the major tool for determining the distribution of mass in spiral galaxies. They provide fundamental information for understanding the dynamics, evolution, and formation of spiral galaxies. We describe various methods to derive rotation curves and review the results obtained.
Sofue, Yoshiaki, Rubin, Vera
openaire +2 more sources
The Rotation Curves of Galaxies [PDF]
Symposium - International Astronomical Union, 1975 Currently available data on rotation curves are reviewed. For curves derived from optical measurements the distribution of the ratios: the last measured point on a rotation curve to the optical radius of the galaxy has a median value of if Reference Catalogue radii are used and if Holmberg radii are used.
openaire +2 more sources
Imprints of Chameleon f(R) Gravity on Galaxy Rotation Curves [PDF]
, 2018 Current constraints on gravity are relatively weak on galactic and intergalactic scales. Screened modified gravity models can exhibit complex behaviour there without violating stringent tests of gravity within our Solar System.
Naik, Aneesh P. +3 more
core +2 more sources
Cotton gravity and 84 galaxy rotation curves [PDF]
, 2022 Recently, as a generalization of general relativity, a gravity theory has been proposed in which gravitational field equations are described by the Cotton tensor.
Harada, Junpei
core +2 more sources
Galaxy rotation curves in the light of the Spinor Theory of Gravity [PDF]
, 2021 We analyze the recently obtained static and spherically symmetric solutions of the Spinor Theory of Gravity (STG) which, in the weak field limit, presents an effective Newtonian potential that contains an extra logarithmic behavior.
da Silva Hartmann A. E. +2 more
core +1 more source
The Astronomical Journal, 2023 We report VLA B-configuration observations of the H i 21 cm line on the close disk galaxy pair NGC 5595 and NGC 5597. At the angular resolution of the observations, ∼7.″1 × 4.″2, while most of the H i 21 cm in NGC 5595 and NGC 5597 has the same extent as
J. Antonio Garcia-Barreto +1 more
doaj +1 more source