Abstract

We developed the parameterized post-Keplerian formalism for hybrid metric-Palatini f(R)-gravity. We obtained analytical expressions in the general eccentric case for four post-Keplerian parameters: \(\dot {\omega }\), \({{\dot {P}}_{{\text{b}}}}\), 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.

中文翻译：

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二元脉冲星中混合度量-Palatini f（R）-重力的测试

摘要

我们为混合度量-Palatini f（R）-重力开发了参数化的后Keplerian形式主义。我们在一般偏心情况下获得了四个后Keplerian参数的解析表达式：\（\ dot {\ omega} \），\（{{\ dot {P}} _ {{\ text {b}}}} \\}，r和s。利用PSR J0737-3039和PSR J1903 + 0327的观测数据，我们对混合f（R）重力参数施加了限制，并表明该理论不被强场条件下的观测所排除。此外，我们获得了对系统组件质量的预测，并发现考虑到的天体物体将比GR中的物体重。