摘要
采用标准MIT口袋模型,研究了非牛顿引力效应对色味锁定相奇异星结构的影响.结果显示,色味锁定相奇异星的最大质量不仅随色超导能隙的增大而变大,而且随非牛顿引力参数的增大而变大.进一步采用GW190814引力波事件伴星的质量(M=2.6M⊙)限制色超导能隙和非牛顿引力参数,结果表明,如果不考虑非牛顿引力效应,只有色超导能隙?>94.5 MeV时才能满足Mmax>2.6 M⊙(Mmax是星体的最大质量).但是,考虑非牛顿引力效应,更小的色超导能隙就能符合Mmax>2.6M⊙.考虑到较小能隙能够符合超新星遗迹Hess J1731-347中心致密天体的表面温度数据,引入非牛顿引力效应有助于解释传统引力框架下无法解释的GW190814引力波事件伴星的大质量.
The effects of non-Newtonian gravity on the properties of color-flavor-locked strange quark stars are studied using the standard MIT bag model.It is shown that the maximum mass of color-flavor-locked strange quark stars increases not only with the increasing of the value of color-superconducting energy gap,but also with the increasing of the non-Newtonian gravity parameter.Moreover,color-superconducting energy gap and non-Newtonian gravity parameter are constrained by the mass of the second component of the GW190814 event(M=2.6M⊙)-It turns out that M_(max)>2.6M⊙(M_(max)is the maximum mass of the stars)can be satisfied only if△>94.5 MeV(O is the color-superconducting energy gap)without the consideration of non-Newtonian gravity effects.However,if non-Newtonian gravity effects are included,smaller values of△could satisfy M_(max)>2.6 Mg-Since.small color-superconducting energy gap is favored by the surface temperature observation of the central compact object in Hess J1731-347 supernova remnant,the inclusion of non-Newtonian gravity effects is helpful in the explanation of the observed large mass of the second component of the GW190814 event.
作者
皮春梅
杨书华
PI Chun-mei;YANG Shu-hua(School of Physics and Mechanical&Electrical Engineering,Hubei University of Education,Wuhan 430205;Research Center for Astronomy,Hubei University of Education,Wuhan 430205;Institute of Astrophysics,Central China Normal University,Wuhan 430079)
出处
《天文学报》
北大核心
2025年第3期30-35,共6页
Acta Astronomica Sinica
基金
国家重点研发计划“变革性技术关键科学问题”专项(2021YFA0718504)
国家自然科学基金项目(12033001)资助。
