Results 91 to 100 of about 106,851 (294)
A Simple Model for Explaining Galaxy Rotation Curves [PDF]
Galaxies, 2018 A new simple expression for the circular velocity of spiral galaxies is proposed and tested against HI Nearby Galaxy Survey (THINGS) data set. Its accuracy is compared with the one coming from MOND.
Aneta Wojnar +2 more
openaire +3 more sources
Open Astronomy, 2018 The properties of unstable large-scale hydrodynamic (HD) modes of oscillations in the gaseous disk of a flat galaxy with a rotation curve having a velocity jump in the inner region of the disk are numerically investigated.
Torgashin Yury, Omurkanov Turgunbek
doaj +1 more source
Mass of the Galaxy Inferred from Outer Rotation Curve [PDF]
, 1996 Using an outer rotation curve of the Galaxy, we explore the galactic constants and the mass of the Galaxy. We show that \Theta_0 of 200 km/s is more favorable than the IAU standard value of 220 km/s, and also show that if \Theta_0 is smaller than 207 km ...
M. Honma, Y. Sofue
semanticscholar +1 more source
A Degradable Bioinspired Flier with Aerogel‐Based Colorimetric Sensors for Environmental Monitoring
Advanced Science, EarlyView.Biodegradable fliers are developed inspired by Tipuana tipu samaras, integrating cellulose nanocrystal aerogel (CNCa) sensors loaded with natural dyes for pH and ammonia detection. The lightweight, degradable fliers mimic natural morphology and aerodynamics, offering an eco‐friendly, scalable solution for in situ environmental monitoring after passive ...
Gianpaolo Gallo +4 more
wiley +1 more source
Magnetic fields: impact on the rotation curve of the Galaxy [PDF]
Monthly Notices of the Royal Astronomical Society, 2013 11 pages, 8 figures, accepted for publication in ...
Sanchez-Salcedo, F. J., Santillan, A.
openaire +2 more sources
The Astrophysical JournalRecent 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 +5 more
doaj +1 more source
Modeling vertical structure in circular velocity of spiral galaxy NGC 4244
, 2015 We study the vertical gradient in azimuthal velocity of spiral galaxy NGC 4244 in a thin disk model. With surface density accounting for the rotation curve, we model the gradient properties in the approximation of quasi-circular orbits and find the ...
Bratek, Łukasz +3 more
core +1 more source
Solid Harmonic Wavelet Bispectrum for Image Analysis
Advanced Science, EarlyView.The Solid Harmonic Wavelet Bispectrum (SHWB), a rotation‐ and translation‐invariant descriptor that captures higher‐order (phase) correlations in signals, is introduced. Combining wavelet scattering, bispectral analysis, and group theory, SHWB achieves interpretable, data‐efficient representations and demonstrates competitive performance across texture,
Alex Brown +3 more
wiley +1 more source
Measurement of the Mass and Stellar Population Distribution in M82 with the LBT
, 2012 We present a K-band spectroscopic study of the stellar and gas kinematics, mass distribution, and stellar populations of the archetypical starburst galaxy M82.
Cottrell +24 more
core +1 more source
The variation of rotation curve shapes as a signature of the effects of baryons on dark matter density profiles [PDF]
, 2015 Rotation curves of galaxies show a wide range of shapes, which can be paramaterized as scatter in Vrot(1kpc)/Vmax i.e.the ratio of the rotation velocity measured at 1kpc and the maximum measured rotation velocity.
C. Brook
semanticscholar +1 more source