Zobrazeno 1 - 10
of 2 939
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:
Ganesh, S
Publikováno v:
Eur. Phys. J. C, 84, 935 (2024)
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:
Park, Sangwoo, Shafieloo, Arman, Bag, Satadru, Denissenya, Mikhail, Linder, Eric V., Ranjan, Adarsh
Publikováno v:
JCAP 11 (2024) 037
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
Akademický článek
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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
Autor:
S. Ganesh
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 84, Iss 9, Pp 1-18 (2024)
Abstract 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
Externí odkaz:
https://doaj.org/article/635a3ea9401b4ed094d6906736600bbf
Akademický článek
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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