On the common nature of dark matter and dark energy: Galaxy groups

@article{Gurzadyan2017OnTC,
  title={On the common nature of dark matter and dark energy: Galaxy groups},
  author={Vahe G. Gurzadyan},
  journal={The European Physical Journal Plus},
  year={2017},
  volume={134},
  pages={1-4}
}
  • V. Gurzadyan
  • Published 28 December 2017
  • Physics
  • The European Physical Journal Plus
Abstract.It is shown that the cosmological constant links the roots both of General Relativity and Newtonian gravity via the general function satisfying Newton’s theorem according to which the gravitating sphere acts as a point mass situated in its center. The quantitative evidence for this link is given via the correspondence of the current value of the cosmological constant with the value of the cosmological term in the modified Newtonian gravity to explain the dark matter in the galaxies… 

The cosmological constant derived via galaxy groups and clusters

The common nature of dark matter and dark energy is argued in Gurzadyan (Eur Phys J Plus 134:14, 2019) based on the approach that the cosmological constant $$\varLambda $$Λ enters the weak-field

Rotating baryonic dark halos

Galactic halos are of great importance for our understanding of both the dark matter nature and primordial non-Gaussianity in the perturbation spectrum, a powerful discriminant of the physical

Gravity lens critical test for gravity constants and dark sector

The recent study of the strong gravitational lens ESO 325-G004 (Collett et al., Science, 360:1342, 2018) leads to a new possibility for testing General Relativity and its extensions. Such gravity

On the origin of cosmic web

The emergence of one- and two-dimensional configurations—Zeldovich pancakes—progenitors of the observed filaments and clusters and groups of galaxies is predicted by means of a developed kinetic

Universal expansion with spatially varying G

We calculate the expansion of the Universe under the assumptions that G varies in space and the radial size r of the Universe is very large (we call this the MOND regime of varying-G gravity). The

Tidal disruption effects near black holes and Lambda-gravity

. The tidal disruption of stars in the vicinity of massive black holes is discussed in the context of Λ -gravity. The latter provides an explanation to the Hubble tension as a possible consequence of

Cosmological constant as a fundamental constant⋆

Abstract.We consider further consequences of the recently (Eur. Phys. J. C 78, 632 (2018)) revealed role of cosmological constant $ \Lambda$Λ as of a physical constant, along with the gravitational

Chaos in a Magnetized Brane-World Spacetime Using Explicit Symplectic Integrators

A brane-world metric with an external magnetic field is a modified theory of gravity. It is suitable for the description of compact sources on the brane such as stars and black holes. We design a

The modified Newton attraction law and its connection with cosmological $$\varLambda $$ Λ term

We consider the possibility of generalizing the Newtonian law of gravity and the transition to a general relativistic model for weak fields with the inclusion of a repulsive term identified as a

Observational scalings testing modified gravity

We consider different observational effects to test a modified gravity approach involving the cosmological constant in the common description of dark matter and dark energy.We obtain upper limits for

References

SHOWING 1-10 OF 19 REFERENCES

Two fundamental constants of gravity unifying dark matter and dark energy

The common nature of the dark sector—dark energy and dark matter—as shown in Gurzadyan (arXiv:1712.10014, 2017) follows readily from the consideration of the generalized Newtonian potential as a

Where Is the Dark Matter?

How much dark matter is there in the universe and where is it located? These are two of the most fundamental questions in cosmology. We use in this paper optical and X-ray mass determinations of

The Dark Matter Problem

Most astronomers and physicists now believe that the matter content of the Universe is dominated by dark matter: hypothetical particles which interact with normal matter primarily through the force

Gravity lens critical test for gravity constants and dark sector

The recent study of the strong gravitational lens ESO 325-G004 (Collett et al., Science, 360:1342, 2018) leads to a new possibility for testing General Relativity and its extensions. Such gravity

THE CONSISTENT NEWTONIAN LIMIT OF EINSTEIN'S GRAVITY WITH A COSMOLOGICAL CONSTANT

We derive the "exact" Newtonian limit of general relativity with a positive cosmological constant Λ. We point out that in contrast to the case with Λ=0, the presence of a positive Λ in Einsteins's

Addressing the missing matter problem in galaxies through a new fundamental gravitational radius

We demonstrate that the existence of a Noether symmetry in f(R) theories of gravity gives rise to a further gravitational radius, besides the standard Schwarzschild one, determining the dynamics at

THE SIZE–VIRIAL RADIUS RELATION OF GALAXIES

I use the abundance matching ansatz, which has proven to be successful in reproducing galaxy clustering and other statistics, to derive estimates of the virial radius, R200, for galaxies of different

Nearby groups of galaxies in the Hercules–Bootes constellations

We consider a sample of 412 galaxies with radial velocities VLG < 2500 kms−1 situated in the sky region of RA = 13.m 0–19.m 0, Dec = +10◦...+40◦ between the Local Void and the Supergalactic plane.