Results 121 to 130 of about 1,242,731 (210)

Rotation curves velocities obtained by warm low-density plasma simulating dark halos and “dark matter”

AIP Advances
The free electron model with Boltzmann statistics for spherical low-density plasmas is developed further, with asymptotic relations obtaining the density of electrons, mass densities, and the potentials of such plasmas.
Y. Ben-Aryeh
doaj   +1 more source

Turning Galaxy Rotation Curves into Radial Cosmic Chronometers: A Nexus Paradigm Approach

Galaxies
We present a novel method for deriving radially resolved dynamical chronometers from galaxy rotation curves, allowing galaxy assembly histories to be reconstructed directly from kinematic data. In the Nexus Paradigm, the baryonic Tully–Fisher relation is
Stuart Marongwe, Stuart Allan Kauffman
doaj   +1 more source

Diverse Rotation Curves of Galaxies in a Simulated Universe: The Observed Dependence on Stellar Mass and Morphology Reproduced

The Astrophysical Journal
We use the IllustrisTNG cosmological hydrodynamical simulation to study the rotation curves of galaxies in the local universe. To do that, we first select the galaxies with 9.4 
Daeun Jeong, Ho Seong Hwang, Haeun Chung, Yongmin Yoon   +3 more
doaj   +1 more source

Comment on “Scalar-tensor gravity coupled to a global monopole and flat rotation curves”

, 2006
The recent paper by Lee and Lee [Phys. Rev. D 69, 127502 (2004)] may strongly leave the impression that astronomers have established that the rotation curves of spiral galaxies are flat. We show that the old paradigm of flat rotation curves lacks, today,
P. Salucci, Gentile G., Salucci, Paolo, G. Gentile   +3 more
core   +1 more source

A Large-scale Ring Galaxy at z = 2.2 Revealed by JWST/NIRCam: Kinematic Observations and Analytical Modelling

The Astrophysical Journal
A unique galaxy at z = 2.2, zC406690, has a striking clumpy large-scale ring structure that persists from rest-frame UV to near-infrared, yet has an ordered rotation and lies on the star formation main sequence.
A. Nestor Shachar, A. Sternberg, R. Genzel, D. Liu, S. H. Price, C. Pulsoni, L. J. Tacconi, R. Herrera-Camus, N. M. Förster Schreiber, A. Burkert, J. B. Jolly, D. Lutz, S. Wuyts, C. Barfety, Y. Cao, J. Chen, R. Davies, F. Eisenhauer, J. M. Espejo Salcedo, L. L. Lee, M. Lee, T. Naab, S. Pastras, T. T. Shimizu, E. Sturm, G. Tozzi, H. Übler   +26 more
doaj   +1 more source

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

The rotation curves of elliptical galaxies [PDF]

Monthly Notices of the Royal Astronomical Society, 1980
openaire   +1 more source

BAYESIAN COMPARISON OF BEC, NFW, AND GNFW HALO MODELS USING GALAXY ROTATION CURVES

We present a Bayesian comparison of three dark-matter halo models—Navarro–Frenk–White (NFW),generalized NFW (gNFW, with free inner slope α), and Bose–Einstein condensate (BEC) halosincluding a rotating variant—fitted to galaxy rotation curves from the ...
Vikram Goel
core   +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