We investigated recent observation data of pulsar masses of PSR J0740+6620, PSR J0348+0432, and PSR J1614−2230 based on the extended σ-ω model. We assumed that these pulsars are maximal mass compact star, which suggest that the core approximation can be applied. Using the linear relations between the microscopic and macroscopic parameters of neutron stars suggested by this model, we estimated the values of the nucleon Landau mass and nuclear compressibility m_L=776.0_−84.9^+38.5 MeV and K=242.7_−28.0^+57.2 MeV, respectively.

中文翻译：

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从最大质量的紧凑型恒星观测值估计可压缩性

我们基于扩展的σ - ω模型研究了PSR J0740 + 6620，PSR J0348 + 0432和PSR J1614-2230的脉冲星质量的最新观测数据。我们假设这些脉冲星是最大质量紧凑星，这表明可以应用核近似。使用该模型建议的中子星微观和宏观参数之间的线性关系，我们分别估算了核朗道质量值和核压缩率 m _L = 776.0 _−84.9 ^+38.5 MeV和 K = 242.7 _−28.0 ^+57.2 MeV 。