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

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: $\dot{\omega }$, ${\dot{P}}_{\mathrm{b}}$, $r$ 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.

12 pages, 4 figures

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• Beyond Horndeski interactions induced by quantum effects
• Novel electrically charged wormhole, black hole and black bounce exact solutions in hybrid metric-Palatini gravity
• Evolving Wormholes in a Cosmological Background
• Extended Gravity Constraints at Different Scales
• Gravitational waveforms from inspiral compact binaries in Hybrid metric-Palatini gravity
• Images of the accretion disk in Hybrid metric-Palatini gravity