Results 141 to 150 of about 2,433,272 (194)

Wormhole solutions of RDM model [PDF]

open access: yesarXiv, 2017
The model of a spiral galaxy with radially directed flows of dark matter is extended by exotic matter, in a form of a perfect fluid with a linear anisotropic equation of state. The exotic matter is collected in the minimum of gravitational potential and opens a wormhole in the center of the galaxy. The flows of dark matter pass through the wormhole and
arxiv  

The Heraklion Extragalactic Catalogue (HECATE): a value-added galaxy catalogue for multimessenger astrophysics [PDF]

open access: green, 2021
Konstantinos Kovlakas   +8 more
openalex   +1 more source

The rotation of galaxies as a consequence of a rotation of the Universe [PDF]

open access: yesarXiv, 2006
Assuming a suitable rotation of the Universe as a whole, we can attribute the rotation of galaxies to it. Using Lagrangian Mechanics we then can find the equations governing the rotation of a galaxy. We find in this way the azimuthal equation, and we find its first integral.
arxiv  

The astrophysical behavior of open clusters along the Milky Way Galaxy

open access: yesNRIAG Journal of Astronomy and Geophysics, 2014
The main aim of this paper is to study the astrophysical behavior of open clusters' properties along the Milky Way Galaxy. Near-IR JHK (2MASS) photometry has been used for getting a homogeneous Catalog of 263 open clusters' parameters, which are studied for the first time by the author through the last five years.
openaire   +3 more sources

Dark matter, a new proof of the predictive power of general relativity [PDF]

open access: yesarXiv, 2015
Without observational or theoretical modifications, Newtonian and general relativity seem to be unable to explain gravitational behavior of large structure of the universe. The assumption of dark matter solves this problem without modifying theories. But it implies that most of the matter in the universe must be unobserved matter.
arxiv  

Cosmology and astrophysics from relaxed galaxy clusters – II. Cosmological constraints [PDF]

open access: bronze, 2014
A. Mantz   +7 more
openalex   +1 more source

Creation of Spiral Galaxies [PDF]

open access: yesarXiv, 2008
The spiral galaxies, including our galaxy, are created by the gravito-radiative forces generated by colliding black holes at the center of quasars. The gravito-radiative force is predicted by Einstein's general relativity. A quasar is assumed to have a circular disk of highly compressed neutrons (ylem) orbiting around black holes.
arxiv  

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