Results 121 to 130 of about 64,819 (265)

Galaxy Rotation Curves from String Theory

, 2007
15 pages, 1 table, 3 figures,1 appendix, LaTex in JHEP ...
Cheung, Yeuk-Kwan E., Savvidy, Konstantin, Kao, Hsien-Chung   +2 more
openaire   +2 more sources

Constraining String Gauge Field by Planet Perihelion Precession and Galaxy Rotation Curves [PDF]

, 2010
Feng Xu
openalex   +1 more source

Global monopoles in Horndeski theory

European Physical Journal C: Particles and Fields
In this article, global monopole solutions will be presented for the Horndeski theory by solving linearized field equations. We obtain two different classes of solutions depending on whether the Horndeski scalar field is massless or massive.
M. Haluk Seçuk, Özgür Delice
doaj   +1 more source

Hydrostatic Equilibrium Constraints in X-COP Galaxy Clusters: Testing Hyperconical Modified Gravity in Hot-gas-dominated Regions

The Astrophysical Journal
Modified Newtonian dynamics (MOND) was originally proposed to model galaxy rotation curves without dark matter. However, MOND presents difficulties in explaining the radial acceleration relation observed in galaxy clusters, and moreover, it does not ...
Robert Monjo
doaj   +1 more source

Raising galaxy rotation curves via dressing

Physical Review D
We present a manifestly diffeomorphism-invariant simple model of galaxy dynamics obtained by applying the Dressing Field Method (DFM) to a general-relativistic system comprising the metric and four scalar fields, phenomenologically representing the four-velocity of a cosmological fluid or dust field.
J. François, L. Ravera
openaire   +2 more sources

Decoding the Galactic Twirl: The Downfall of Milky Way–Mass Galaxy Rotation Curves in the FIRE Simulations

The Astrophysical Journal
Recent measurements of the Milky Way rotation curve found a sharp decline at around 15–20 kpc from the center of the Galaxy, suggesting that the Galactic dark matter halo is much less massive than predicted by other dynamical tracers.
Xiaowei Ou, Lina Necib, Andrew Wetzel, Anna Frebel, Jeremy Bailin, Micah Oeur   +5 more
doaj   +1 more source

Rotation curves and dynamical masses of MaNGA barred galaxies [PDF]

, 2023
E. O. Schmidt, D. Mast, Gaia Gaspar, W. A. Weidmann   +3 more
openalex   +1 more source

Galaxy rotation curves: the effect of $\vec{j} \times\vec{B}$ force [PDF]

, 2011
D. Tsiklauri
openalex   +1 more source

The Nearly Universal Disk Galaxy Rotation Curve

The Astrophysical Journal
The universal rotation curve (URC) of disk galaxies was originally proposed to predict the shape and amplitude of any rotation curve (RC) based solely on photometric data.
Raj Patel, Nikhil Arora, Stéphane Courteau, Connor Stone, Matthew Frosst, Lawrence Widrow   +5 more
doaj   +1 more source

Perfect fluid dark matter: a viability test with galaxy rotation curves

European Physical Journal C: Particles and Fields
The anomalous rotation curves of galaxies provide compelling evidence for dark matter, yet its fundamental nature and distribution remain key unresolved issues in astrophysics.
Jan Kuncewicz
doaj   +1 more source