We study non-Newtonian gravity effects on the structure and the tidal deformability of strange stars using the standard MIT model, and compare the theory with the observations of compact stars following the approach of Yang et al. (2020). Different to Yang et al. (2020), in which the authors only employed the constraints from the mass of PSR J0740+6620 and the dimensionless tidal deformability of a $1.4M_{\odot }$ star of GW170817, here we also consider another constraint, namely, from the observations of the mass and radius of the isolated pulsar PSR J0030+0451 by NICER. We find that for the standard MIT model, strange stars can not agree with the observations of PSR J0740+6620, PSR J0030+0451 and GW170817 simultaneously. In other words, for the standard MIT model, the observations of PSR J0740+6620, PSR J0030+0451 and GW170817 rule out the possibility of the existence of strange stars even when we consider the effects of non-Newtonian gravity.

我们使用标准的 MIT 模型研究了非牛顿引力对奇异星结构和潮汐变形能力的影响，并按照杨等人的方法将理论与致密星的观测进行了比较。(2020)。与杨等人不同。(2020)，其中作者仅采用 PSR J0740+6620 的质量和无量纲潮汐变形能力的约束$1.4{米}_{\odot }$GW170817 的恒星，这里我们还要考虑另一个约束，即来自 NICER 对孤立脉冲星 PSR J0030+0451 的质量和半径的观测。我们发现对于标准的 MIT 模型，奇异星无法同时与 PSR J0740+6620、PSR J0030+0451 和 GW170817 的观测结果一致。换句话说，对于标准的MIT模型，即使考虑到非牛顿引力的影响，PSR J0740+6620、PSR J0030+0451和GW170817的观测结果也排除了奇异星存在的可能性。