General relativistic dynamics applied to the rotation curves of galaxies
نویسندگان
چکیده
منابع مشابه
Rotation curves of spiral galaxies: A general-relativistic model
Spiral galaxies are considered as static and spherically symmetric Dark Matter Configurations (DMC) [described by Tolman’s type VII solution with vanishing surface density] of size a ∼ 10 kpc in which ∼ 10 Sun-like stars [non-zero rest-mass particles (NZRPs)] move along appropriate trajectories. Using general relativity (GR), we show that a mass of dark matter about 127 212 ×10M⊙ is required in...
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It has recently been suggested that observed galaxy rotation curves can be accounted for by general relativity without recourse to dark-matter halos. Good fits have been produced to observed galatic rotation curves using this model. We show that the implied total mass is infinite, adding to the evidence opposing the hypothesis.
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The rotation curves of a sample of 46 low- and high-surface brightness galaxies are considered in the context of Milgrom's modi_ed dynamics (MOND) to test a new interpolating function proposed by Zhao et al. (2010) [1] and compare with the results of simple interpolating function. The predicted rotation curves are calculated from the total baryonic matter based on the B-band surface photometry,...
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The missing of a Keplerian fall-off in the observed galaxy rotation curves represents classical evidence for the existence of dark matter on galactic scales. There has been some recent activity concerning the potential of modelling galactic systems with the help of general relativity. This was motivated by claims that by the use of full general relativity dark matter could be made superfluous. ...
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Rotation curves of spiral galaxies are the major tool for determining the distribution of mass in spiral galaxies. They provide fundamental information for understanding the dynamics, evolution and formation of spiral galaxies. We describe various methods to derive rotation curves, and review the results obtained. We discuss the basic characteristics of observed rotation curves in relation to v...
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ژورنال
عنوان ژورنال: Astrophysics and Space Science
سال: 2011
ISSN: 0004-640X,1572-946X
DOI: 10.1007/s10509-011-0854-z