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Test of hybrid metric-Palatini f(R)-gravity in binary pulsars

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arxiv 2009.11156 v1 pith:EMF56OFG submitted 2020-09-23 gr-qc

N. Avdeev , P. Dyadina , S. Labazova This is my paper · ORCID
classification gr-qc
keywords gravityhybridmetric-palatiniobtainedparametersadditionanalyticalastrophysical
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abstract

We developed the parameterized post-Keplerian formalism for hybrid metric-Palatini $f(R)$-gravity. We obtained analytical expressions in the generel eccentric case for four PPK parameters: $\dot\omega$, $\dot P_{\rm b}$, $r$ and $s$. Using observational data of PSR J0737-3039 and PSR J1903+0327 we imposed restrictions on the parameters of hybrid f(R)-gravity and showed that this theory is not ruled out by the observations in strong field regime. In addition we obtained predictions for masses of systems components and found that considered astrophysical objects will be heavier than in GR.

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  1. Novel electrically charged wormhole, black hole and black bounce exact solutions in hybrid metric-Palatini gravity

    gr-qc 2024-12 conditional novelty 5.0 of 10

    Exact charged solutions in hybrid metric-Palatini gravity with zero scalar potential produce traversable wormholes, double-horizon black holes, black bounces, and infinite-horizon spacetimes.

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