Primordial gravitational waves in generalized Palatini gravity

Demir, D.; Gabriel, K.; Kasem, A.; Khalil, S.

doi:10.1016/j.dark.2023.101336

Physics of the Dark Universe

2023

DOI: 10.1016/j.dark.2023.101336

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Primordial gravitational waves in generalized Palatini gravity

D. Demir,

K. Gabriel,

A. Kasem

et al.

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2024

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Cited by 1 publication

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Constraints on metric-Palatini gravity from QPO data

Ghorani,

Mitra,

Rayimbaev

et al. 2024

Eur. Phys. J. C

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In this work, we study metric-Palatini gravity extended by the antisymmetric part of the affine curvature. This gravity theory leads to general relativity plus a geometric Proca field. Using our previous construction of its static spherically-symmetric AdS solution (Eur Phys J. C 83(4):318, 2023), we perform a detailed analysis in this work using the observational quasiperiodic oscillations (QPOs) data. To this end, we use the latest data from stellar-mass black hole GRO J1655-40, intermediate-mass black hole in M82-X1, and the super-massive black hole in SgA* (our Milky Way) and perform a Monte-Carlo-Markov-Chain (MCMC) analysis to determine or bound the model parameters. Our results shed light on the allowed ranges of the Proca mass and other parameters. The results imply that our solutions can cover all three astrophysical black holes. Our analysis can also be extended to more general metric-affine gravity theories.

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Constraints on metric-Palatini gravity from QPO data

Ghorani,

Mitra,

Rayimbaev

et al. 2024

Eur. Phys. J. C

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Primordial gravitational waves in generalized Palatini gravity

Cited by 1 publication

References 42 publications

Constraints on metric-Palatini gravity from QPO data

Constraints on metric-Palatini gravity from QPO data

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