The Role of Dark Matter and Dark Energy in Cosmological Models: Theoretical Overview

Capozziello, Salvatore; Paolis, F. De; Ingrosso, G.; Nucita, A. A.

doi:10.1007/s11214-009-9500-2

Cited by 28 publications

(20 citation statements)

References 83 publications

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“…The astrometric observations of S2 star were given in the references [76]. Recently, they were used to evaluate parameters of black hole and to test and constrain several models of modified gravity at mpc scales [77][78][79][80][81]. Comparisons of results obtained in Yukawa gravity model with the NTT/VLT astrometric observations of S2 star [76] resulted with the constraints on the range of Yukawa interaction λ [62].…”

Section: Graviton Mass Estimates From S2 Star Orbitmentioning

confidence: 99%

Trajectories of bright stars at the Galactic Center as a tool to evaluate a graviton mass

2016

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Abstract. Scientists worked in Saint-Petersburg (Petrograd, Leningrad) played the extremely important role in creation of scientific school and development of general relativity in Russia. Very recently LIGO collaboration discovered gravitational waves [1] predicted 100 years ago by A. Einstein. In the papers reporting about this discovery, the joint LIGO & VIRGO team presented an upper limit on graviton mass such as m g < 1.2 × 10 −22 eV [1,2]. The authors concluded that their observational data do not show violations of classical general relativity because the graviton mass limit is very small. We show that an analysis of bright star trajectories could bound graviton mass with a comparable accuracy with accuracies reached with gravitational wave interferometers and expected with forthcoming pulsar timing observations for gravitational wave detection. This analysis gives an opportunity to treat observations of bright stars near the Galactic Center as a tool for an evaluation specific parameters of the black hole and also to obtain constraints on the fundamental gravity law such as a modifications of Newton gravity law in a weak field approximation. In that way, based on a potential reconstruction at the Galactic Center we give a bounds on a graviton mass.

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Section: Graviton Mass Estimates From S2 Star Orbitmentioning

confidence: 99%

Trajectories of bright stars at the Galactic Center as a tool to evaluate a graviton mass

2016

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“…The problem is connected with attempts to resolve the smallest spot at the Galactic Center with VLBI interferometry in mm-band [25]. As it was noted earlier, observations of bright star trajectories near the Galactic Center could provide an efficient tool to evaluate a gravitational potential in particular, analyzing these trajectories one can obtain constraints on parameters of black hole and stellar cluster [26] and on parameters of dark matter distribution [27,28,29].…”

Section: Introductionmentioning

confidence: 99%

Graviton mass evaluation with trajectories of bright stars at the Galactic Center

Jovanović

Borka

Jovanović

2017

J. Phys.: Conf. Ser.

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“…One can find a more detailed description of our results in papers 15,21,22,[29][30][31][32][33][34][35] .…”

Section: Discussionmentioning

confidence: 89%

Shadow size for the supermassive black hole at the Galactic Center

Zakharov

2017

The Fourteenth Marcel Grossmann Meeting

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We discuss a shadow concept introduced by . We present estimates of shadow sizes for different parameters of black hole at the Galactic Center. We discuss results of observations of the smallest spot at the Galactic Center and their connections with the shadow size. We describe analytical dependencies of shadow sizes as functions of charge and cosmological constant and discuss opportunity to get better fits with anti-de-Sitter or Reissner-Nordström black hole models.

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The Role of Dark Matter and Dark Energy in Cosmological Models: Theoretical Overview

Cited by 28 publications

References 83 publications

Trajectories of bright stars at the Galactic Center as a tool to evaluate a graviton mass

Trajectories of bright stars at the Galactic Center as a tool to evaluate a graviton mass

Graviton mass evaluation with trajectories of bright stars at the Galactic Center

Shadow size for the supermassive black hole at the Galactic Center

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