Results 91 to 100 of about 1,219,804 (296)
Exact solutions with asymptotically flat galactic rotation curves
Nuclear Physics BWe present a new set of spacetime solutions for spiral galaxies corresponding to flat rotation curves at large distances. These correspond to anisotropic pressure, which could be sourced by either matter or geometry.
Sandipan Sengupta
doaj +1 more source
A Workflow to Accelerate Microstructure‐Sensitive Fatigue Life Predictions
Advanced Engineering Materials, EarlyView.This study introduces a workflow to accelerate predictions of microstructure‐sensitive fatigue life. Results from frameworks with varying levels of simplification are benchmarked against published reference results. The analysis reveals a trade‐off between accuracy and model complexity, offering researchers a practical guide for selecting the optimal ...
Luca Loiodice +2 more
wiley +1 more source
New dynamical description of the rotation curves of galaxies
, 2005 Observations of dynamics of galaxies and plasma in the universe led us to the conclusion that there exists a huge amount of matter that is invisible, the so called "dark matter".
Paduroiu, Sinziana, Rusu, Mircea
core +1 more source
Rotation Number Additive Theory for Birkhoff Curves
, 2017 Rotation number elementary theory for Birkhoff curves has been constructed. Geometrical (dynamical) and numerical properties for Birkhoff curves being more than two regions common boundary has been studied. Topological number invariants with respect to a
Serow, D. W., Osipov, A. V.
core
High-resolution rotation curves of low surface brightness galaxies
, 2002 We present high-resolution rotation curves of a sample of 26 low surface brightness galaxies. From these curves we derive mass distributions using a variety of assumptions for the stellar mass-to-light ratio.
W. J. G. de Blok, A. Bosma
core +1 more source
Towards a physical model for galactic rotation curves [PDF]
, 1986 Extensive and meticulous observations of the rotation curves of galaxies show that they are either flat or gently going up, but rarely decreasing, at large galactocentric distances.
Cowsik, Ramanath, Ghosh, Pranab
core +1 more source
Advanced Engineering Materials, EarlyView.Low‐cycle fatigue damage in Mn–Mo–Ni reactor pressure vessel steel is examined using a combined electron backscatter diffraction and positron annihilation lifetime spectroscopy approach. The study correlates texture evolution, dislocation substructure development, and vacancy‐type defect formation across uniform, necked, and fracture regions, providing
Apu Sarkar +2 more
wiley +1 more source
HI rotation curves of spiral galaxies [PDF]
, 2006 Observations of the spiral galaxy NGC 3198 in the 21-cm line are presented. The H I distribution extends to about two Holmberg radii and the radial velocity field is symmetric and regular over the entire area.
Begeman, Kornelis
core +4 more sources
Advanced Engineering Materials, EarlyView.A numerical–experimental framework is developed for characterizing multi‐matrix fiber‐reinforced polymers (MM‐FRPs) combining epoxy and polyurethane matrices. Harmonic bending tests are integrated with finite element model updating (FEMU) to simultaneously identify elastic and viscoelastic material parameters.
Rodrigo M. Dartora +4 more
wiley +1 more source
On the Dwarf Galaxy Rotation Curve Diversity Problem
Galaxies, 2018 In this paper, we show how baryonic physics can solve the problem of the striking diversity in dwarf galaxy rotation curves shapes. To this aim, we compare the distribution of galaxies of the SPARC sample, in the plane V2kpc-VRlast (V2kpc being the ...
Antonino Del Popolo +2 more
doaj +1 more source