论文标题
用S2，S38和S55星的Schwarzschild进攻估计混合Palatini重力模型的参数：散装质量分布的情况
Estimating the parameters of Hybrid Palatini gravity model with the Schwarzschild precession of S2, S38 and S55 stars: case of bulk mass distribution
论文作者
论文摘要
我们用S2，S38和S55星的S-Stars的Schwarzschild进动估算混合Palatini重力模型的参数。我们还考虑了银河系中心附近的大质量分布的案例。我们假设上述S-Stars的Schwarzschild轨道进动与在所有研究的情况下的一般相对论（GR）中一样。 2020年，重力协作检测到银河中心的超级质量黑洞（SMBH）周围S2星的轨道进动，并表明它接近GR预测。 S38和S55轨道的天文数据分析表明，在这些情况下，轨道进液也接近GR预测。基于这一观察性事实，我们用S2，S38和S55星的Schwarzschild进攻评估了混合Palatini重力模型的参数，我们估计了混合palatini重力模型的参数范围，这些参数范围在所有树恒星中都喜欢Orbital prospession。我们还评估了在扩展物质的散装质量密度分布不同的情况下，混合palatini重力模型的参数。我们认为，提出的方法是评估银河系中心重力参数的有用工具。
We estimate the parameters of Hybrid Palatini gravity model with the Schwarzschild precession of S-stars, specifically of S2, S38 and S55 stars. We also take into account case of bulk mass distribution near Galactic Center. We assume that the Schwarzschild orbital precession of mentioned S-stars is the same like in General Relativity (GR) in all studied cases. In 2020 the GRAVITY Collaboration detected the orbital precession of the S2 star around the supermassive black hole (SMBH) at the Galactic Center and showed that it is close to the GR prediction. The astronomical data analysis of S38 and S55 orbits showed that also in these cases orbital precession is close to the GR prediction. Based on this observational fact, we evaluated parameters of the Hybrid Palatini Gravity model with the Schwarzschild precession of the S2, S38 and S55 stars and we estimated the range of parameters of Hybrid Palatini gravity model for which the orbital precession is like in GR for all tree stars. We also evaluated parameters of the Hybrid Palatini Gravity model in case of different values of bulk mass density distribution of extended matter. We believe that proposed method is a useful tool to evaluate parameters of the gravitational potential at the Galactic Center.
