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Galactic rotation curve and dark matter according to gravitomagnetism
- Source :
- European Physical Journal C: Particles and Fields, Vol 81, Iss 2, Pp 1-25 (2021), European Physical Journal
- Publication Year :
- 2021
- Publisher :
- SpringerOpen, 2021.
-
Abstract
- Historically, the existence of dark matter has been postulated to resolve discrepancies between astrophysical observations and accepted theories of gravity. In particular, the measured rotation curve of galaxies provided much experimental support to the dark matter concept. However, most theories used to explain the rotation curve have been restricted to the Newtonian potential framework, disregarding the general relativistic corrections associated with mass currents. In this paper it is shown that the gravitomagnetic field produced by the currents modifies the galactic rotation curve, notably at large distances. The coupling between the Newtonian potential and the gravitomagnetic flux function results in a nonlinear differential equation that relates the rotation velocity to the mass density. The solution of this equation reproduces the galactic rotation curve without recourse to obscure dark matter components, as exemplified by three characteristic cases. A bi-dimensional model is developed that allows to estimate the total mass, the central mass density, and the overall shape of the galaxies, while fitting the measured luminosity and rotation curves. The effects attributed to dark matter can be simply explained by the gravitomagnetic field produced by the mass currents.
- Subjects :
- Physics
Newtonian potential
Physics and Astronomy (miscellaneous)
Gravitoelectromagnetism
Dark matter
Flux
lcsh:Astrophysics
Astrophysics
Astrophysics::Cosmology and Extragalactic Astrophysics
Galaxy
Luminosity
Coupling (physics)
lcsh:QB460-466
lcsh:QC770-798
lcsh:Nuclear and particle physics. Atomic energy. Radioactivity
Engineering (miscellaneous)
Galaxy rotation curve
Subjects
Details
- Language :
- English
- ISSN :
- 14346052 and 14346044
- Volume :
- 81
- Issue :
- 2
- Database :
- OpenAIRE
- Journal :
- European Physical Journal C: Particles and Fields
- Accession number :
- edsair.doi.dedup.....6bfc1c9cf105a3fb87683b0454fd37d8