Results 111 to 120 of about 2,129 (213)
Dark matter and rotation curves of stars in galaxies [PDF]
Astronomische Nachrichten, 2001 The dark matter accretion theory (around a central body) of the author on the basis of his 5-dimensional Projective Unified Field Theory (PUFT) is applied to the orbital motion of stars around the center of the Galaxy. The departure of the motion from Newtonian mechanics leads to approximately flat rotation curves being in rough accordance with the ...
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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. Galaxy shape is determined by cen-tral mass and its rotation.
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Modified Gravity as a Common Cause for Cosmic Acceleration and Flat Galaxy Rotation Curves [PDF]
, 2012 Flat galaxy rotation curves and the accelerating Universe both imply the existence of a critical accelera-tion, which is of the same order of magnitude in both the cases, in spite of the galactic and cosmic length scales being vastly different.
Priti Mishra, Tejinder P. Singh
core
Galaxy rotation curves. The theory
, 2013 The non-gauge vector field with as simple as possible Lagrangian (\ref{Lagrangian}) turned out an adequate tool for macroscopic description of the main properties of dark matter. The dependence of the velocity of a star on the radius of the orbit $V\left(r\right) $ -- galaxy rotation curve -- is derived analytically from the first principles ...
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Galaxy rotation curves with lognormal density distribution [PDF]
Monthly Notices of the Royal Astronomical Society, 2015 Accepted for publication by MNRAS January 30 ...
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Mapping the dynamics, star-formation rates, and chemical properties of galaxies with integral field spectroscopy [PDF]
, 2005 Major advances in the development of instruments for eight and ten meter class telescopes are revolutionising our understanding of galaxy formation. In particular, Integral Field Spectrographs (which produce a three dimensional {x, y, velocity) map of a ...
Swinbank, Anthony Mark +1 more
core
Relativistic correction in galaxy rotation curves [PDF]
, 2022 Dark matter is one of the great unknowns in the world of science, as its existence is evidenced as necessary to explain astrophysical and cosmological phenomena related to gravitational forces, but its composition is unknown as it does not have non ...
Silva Junior, Ramon de Oliveira
core
The inner structure of Λ CDM haloes - II. Halo mass profiles and low surface brightness galaxy rotation curves [PDF]
, 2004 We use a set of high-resolution cosmological N-body simulations to investigate the inner mass profile of galaxy-sized cold dark matter (CDM) haloes.
Frenk, C.S. +30 more
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Global monopoles in Horndeski theory
European Physical Journal C: Particles and FieldsIn this article, global monopole solutions will be presented for the Horndeski theory by solving linearized field equations. We obtain two different classes of solutions depending on whether the Horndeski scalar field is massless or massive.
M. Haluk Seçuk, Özgür Delice
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The Astrophysical JournalModified Newtonian dynamics (MOND) was originally proposed to model galaxy rotation curves without dark matter. However, MOND presents difficulties in explaining the radial acceleration relation observed in galaxy clusters, and moreover, it does not ...
Robert Monjo
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