Clustering of galaxies with f(R) gravity

Capozziello, Salvatore; Faizal, Mir; Hameeda, Mir; Pourhassan, B.; Salzano, Vincenzo; Upadhyay, Sudhaker

doi:10.1093/mnras/stx2945

Cited by 60 publications

(43 citation statements)

References 34 publications

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“…For example, it is well-known that f (R) gravity modifies the large distance behavior of gravitational potential [77][78][79][80]. Thus, the clustering of galaxies, interacting through effective potentials derived from f (R) gravity, has also been studied using a modified gravitational partition function, and it has been observed that also these models are consistent with observations for large samples of galaxies and clusters [81,82], although the corresponding statistical inference is a bit weaker that the nonlocal scenario we have considered here. It is worth noticing that the clustering of galaxies in f (R) gravity is also consistent with the constraints coming from the Planck data [83].…”

Section: Discussionmentioning

confidence: 56%

Logarithmic corrections to Newtonian gravity and large scale structure

et al. 2021

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Effects from nonstandard corrections to Newtonian gravity, at large scale, can be investigated using the cosmological structure formation. In particular, it is possible to show if and how a logarithmic correction (as that induced from nonlocal gravity) modifies the clustering properties of galaxies and of clusters of galaxies. The thermodynamics of such systems can be used to obtain important information about the effects of such modification on clustering. We will compare its effects with observational data and it will be demonstrated that the observations seem to point to a characteristic scale where such a logarithmic correction might be in play at galactic scales. However, at larger scales such statistical inferences are much weaker, so that a fully reliable statistical evidence for this kind of corrections cannot be stated without further investigations and the use of more varied and precise cosmological and astrophysical probes.

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Section: Discussionmentioning

confidence: 56%

Logarithmic corrections to Newtonian gravity and large scale structure

et al. 2021

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“…The swampland program and weak gravity conjecture have always been studied in many past works, such as the study of inflation models, the structure of black holes, and other cosmological implications, etc., in the Refs. [1,4,[33][34][35][36][37][38][39][40]. Now we want to evaluate another of these implications about the black brane from the plot.…”

Section: Perturbative Einstein-yang-mills Ads Black Brane In Massive ...mentioning

confidence: 99%

Weak Gravity Conjecture, Black Branes and Violations of Universal Thermodynamic Relation

Sadeghi¹,

Pourhassan²,

Gashti³

et al. 2022

Preprint

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The universal thermodynamic relations between corrections to entropy and extremality for various black holes solutions have been studied. In this regard, we hereby consider a number of different black brane solutions in different structures for perturbative corrections to general relativity. These are, namely, black brane solution in Rastall AdS massive gravity, Einstein-Yang-Mills AdS black brane solution in massive gravity and general anisotropic black brane in Horava-Lifshitz gravity. We calculate both the entropy and extremality bound by introducing a small constant correction to the action. Remarkably, we find that black brane violates the universal thermodynamic relations. In other words, a universal relation between corrections to entropy and extremality are not valid in the black brane structure.

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“…Here, by considering Eq. (36) we have obtained error limits of Λ for them. The results are exhibited in Table 4.…”

Section: Probes By Galactic Dark Mattermentioning

confidence: 99%

“…Importantly, the Hubble tension, in view of the indications revealed in the analysis below, thus can act as an independent test for the modified weak-field General Relativity, complementing the possibilities of gravity lensing [32,33], celestial mechanics [34], galaxy cluster dynamics and cosmic voids [35][36][37][38], cosmological perturbation evolution [39] and dedicated GR experimental programs [40,41].…”

Section: Introductionmentioning

confidence: 99%

Hubble tension vs two flows

Gurzadyan

Степанян

2021

Eur. Phys. J. Plus

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The Hubble tension is shown to be solvable, without any free parameter, conceptually and quantitatively, within the approach of modified weak-field General Relativity involving the cosmological constant Λ. That approach enables one to describe in a unified picture both the dynamics of dark matter containing galaxies and the accelerated expansion of the Universe, thus defining a local Hubble constant of a local flow and the global one. The data on the dark matter content of peculiar galaxy samples are shown to be compatible to that unified picture. Future more refined surveys of galaxy distribution, hierarchical dynamics and flows within the vicinity of the Local group and the Virgo supercluster can be decisive in revealing the possible common nature of the dark sector.

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Clustering of galaxies with f(R) gravity

Cited by 60 publications

References 34 publications

Logarithmic corrections to Newtonian gravity and large scale structure

Logarithmic corrections to Newtonian gravity and large scale structure

Weak Gravity Conjecture, Black Branes and Violations of Universal Thermodynamic Relation

Hubble tension vs two flows

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