Results 101 to 110 of about 957 (185)

The Impact of Bar-induced Noncircular Motions on the Measurement of Galactic Rotation Curves

The Astrophysical Journal
We study the impact of bar-induced noncircular motions on the derivation of galactic rotation curves (RCs) using hydrodynamic simulations and observational data from the PHANGS-ALMA survey.
Jie Liu, Zhi Li, Juntai Shen
doaj   +1 more source

Preliminary Study of Dark-matter-dominated Systems: Further Analysis for Galactic Dark Matter Halos with Pressure

The Astrophysical Journal
Low-surface-brightness galaxies are excellent laboratories, where stars and baryonic matter act as tracers of the gravitational potential of the dark matter halo.
A. Aceña, J. Barranco, A. Bernal, E. López, M. Llerena   +4 more
doaj   +1 more source

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

The rotation curves of elliptical galaxies [PDF]

Monthly Notices of the Royal Astronomical Society, 1980
openaire   +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

Galaxy rotation curve

We present a complete framework for galactic dynamics based on the Energy-Space Emergence (ESE) paradigm. Space is not empty – it is a quantized energy lattice with fundamental spacing α0 = 1.2 5× 10−1 0m. Mass is a cluster of space nodes. Gravity is node density gradient.
openaire   +1 more source

A Discrete Informational Framework for Classical Gravity: Ledger Foundations and Galaxy Rotation Curve Constraints. [PDF]

Entropy (Basel)
Simons M, Allahyarov E, Washburn J.
europepmc   +1 more source

A direct black-hole mass measurement in a little red dot at high redshift. [PDF]

Nature
Juodžbalis I, Marconcini C, D'Eugenio F, Maiolino R, Marconi A, Übler H, Scholtz J, Ji X, Jones GC, Perna M, Arribas S, Bennett JS, Bromm V, Bunker AJ, Carniani S, Charlot S, Cresci G, Dayal P, Egami E, Fabian A, Inayoshi K, Isobe Y, Ivey LR, Koudmani S, Laporte N, Liu B, Lyu J, Mazzolari G, Monty S, Parlanti E, Pérez-González PG, Robertson B, Schneider R, Sijacki D, Tacchella S, Trinca A, Valiante R, Volonteri M, Witstok J, Zhang S.   +39 more
europepmc   +1 more source

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

Transport of Electrons in Tangled Magnetic Fields. [PDF]

Space Sci Rev
Verscharen D, Jeffrey N, Artemyev A, Coburn JT, Kunz MW, Pezzi O, Riquelme M, Svenningsson I, Wilson Iii LB.   +8 more
europepmc   +1 more source