Results 141 to 150 of about 64,819 (265)

Confronting the Diversity Problem: The Limits of Galaxy Rotation Curves as a Tool to Understand Dark Matter Profiles

The Astrophysical Journal
While 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, Philip F. Hopkins, Xuejian Shen, Michael Boylan-Kolchin, James Bullock, Claude-André Faucher-Giguère, Francisco J. Mercado, Jorge Moreno, Lina Necib, Xiaowei Ou, Sarah Wellons, Andrew Wetzel   +11 more
doaj   +1 more source

Galaxy rotation curves in the $\mu$-deformation based approach. [PDF]

, 2019
A. M. Gavrilik, І. І. Качурик, M. V. Khelashvili   +2 more
openalex  

Modelling the rotational curves of spiral galaxies with a scalar field [PDF]

, 2004
J. P. Mbelek
openalex   +1 more source

Chameleon gravity as an alternative to dark matter

European Physical Journal C: Particles and Fields
By studying the chameleon gravity on galaxy scales, we investigate the effects of the chameleon dark matter. To perform this task, we consider the dynamics of the chameleon scalar field in the region of galactic halos in static spherically symmetric ...
Raziyeh Zaregonbadi, Nasim Saba, Mehrdad Farhoudi   +2 more
doaj   +1 more source

Indefinitely Flat Circular Velocities and the Baryonic Tully–Fisher Relation from Weak Lensing

The Astrophysical Journal Letters
We use a new deprojection formula to infer the gravitational potential around isolated galaxies from weak gravitational lensing. The results imply circular velocity curves that remain flat for hundreds of kiloparsecs, greatly extending the classic result
Tobias Mistele, Stacy McGaugh, Federico Lelli, James Schombert, Pengfei Li   +4 more
doaj   +1 more source

The Survival of the Sagittarius Dwarf Galaxy and the Flatnessof the Rotation Curve of the Galaxy [PDF]

, 1998
Hongsheng Zhao
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Discs no more: the morphology of low-mass simulated galaxies in FIREbox. [PDF]

Mon Not R Astron Soc
Benavides JA, Sales LV, Wetzel A, Moreno J, Feldmann R, Mercado FJ, Bullock JS, Hopkins PF, Faucher-Giguère CA, Stern J, Wheeler C, Kereš D.   +11 more
europepmc   +1 more source

On the Three Laws of Rotationally Supported Galaxies: The Observed Flattening of Rotation Curves, the Baryonic Tully-Fischer Relation and the Mass Discrepancy-acceleration Relation

, 2020
José Alcauza
openalex   +2 more sources

Gravitational Hamiltonian Systems and the Retarded Gravity Inequality. [PDF]

Entropy (Basel)
Yahalom A.
europepmc   +1 more source

A giant disk galaxy two billion years after the Big Bang. [PDF]

Nat Astron
Wang W, Cantalupo S, Pensabene A, Galbiati M, Travascio A, Steidel CC, Maseda MV, Pezzulli G, de Beer S, Fossati M, Fumagalli M, Gallego SG, Lazeyras T, Mackenzie R, Matthee J, Nanayakkara T, Quadri G.   +16 more
europepmc   +1 more source