Zobrazeno 1 - 10
of 2 871
pro vyhledávání: '"Galaxy rotation curves"'
Autor:
Govaerts, Jan
Publikováno v:
International Journal of Theoretical Physics (2024) 63:207(21 pages)
The standard proposal within the context of General relativity and its weak field Newtonian limit for the nature of dark matter is that it consists of dark matter particles of unknown type. In the present work and specifically for spiral galaxy rotat
Externí odkaz:
http://arxiv.org/abs/2408.09977
Autor:
Sands, Isabel S., Hopkins, Philip F., Shen, Xuejian, Boylan-Kolchin, Michael, Bullock, James, Faucher-Giguere, Claude-Andre, Mercado, Francisco J., Moreno, Jorge, Necib, Lina, Ou, Xiaowei, Wellons, Sarah, Wetzel, Andrew
While galaxy rotation curves provide one of the most powerful methods for measuring dark matter profiles in the inner regions of rotation-supported galaxies, at the dwarf scale there are factors that can complicate this analysis. Given the expectatio
Externí odkaz:
http://arxiv.org/abs/2404.16247
Autor:
Park, Sangwoo, Shafieloo, Arman, Bag, Satadru, Denissenya, Mikhail, Linder, Eric V., Ranjan, Adarsh
Internal kinematics of galaxies, traced through the stellar rotation curve or two dimensional velocity map, carry important information on galactic structure and dark matter. With upcoming surveys, the velocity map may play a key role in the developm
Externí odkaz:
http://arxiv.org/abs/2404.16401
Autor:
Ganesh, S
A novel theory was proposed earlier to model systems with thermal gradients, based on the postulate that the spatial and temporal variation in temperature can be recast as a variation in the metric. Combining the variation in the metric due to the th
Externí odkaz:
http://arxiv.org/abs/2403.13019
Autor:
Zloshchastiev, Konstantin G.
Publikováno v:
Pramana 97, 2 (2023)
Logarithmic superfluid theory of physical vacuum suggests that gravity has a multiple-scale structure; where one can recognize sub-Newtonian, Newtonian, logarithmic, linear and quadratic (de Sitter) terms in the induced spacetime metric and effective
Externí odkaz:
http://arxiv.org/abs/2310.06861
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We investigate recent claims that gravitomagnetic effects in linearised general relativity can explain flat and rising rotation curves, such as those observed in galaxies, without the need for dark matter. If one models a galaxy as an axisymmetric, s
Externí odkaz:
http://arxiv.org/abs/2303.06115
Galaxy rotation curves incorporating relativistic mass and comparison with Keplerian velocity curves
Autor:
Jaracz, Jaroslaw S.
We derive a formula for the velocity distribution of an axially symmetric galaxy where the mass density is corrected using the mass formula from special relativity. We take some reasonable test mass densities and numerically compute the resulting gal
Externí odkaz:
http://arxiv.org/abs/2302.09720
Galaxies show different halo scaling relations such as the Radial Acceleration Relation, the Mass Discrepancy Acceleration Relation (MDAR) or the dark matter Surface Density Relation (SDR). At difference with traditional studies using phenomenologica
Externí odkaz:
http://arxiv.org/abs/2302.02020
Autor:
Robin Booth
Publikováno v:
Galaxies, Vol 12, Iss 3, p 21 (2024)
We examine some of the consequences of the Exochronous (timeless) metric and the associated ΣGR cosmological model for the formation of galaxies, and, in particular, their characteristic rotation curves. We show how the cumulative curvature from the
Externí odkaz:
https://doaj.org/article/2722d93e0e8547cd8017d5d02dfabb18