作　　者： ; ; (戚湛强）; (侯佳为）;

机构地区： 渤海大学数理学院

出　　处： 《天文学报》 2017年第1期98-107,共10页

摘　　要： 通过相对论平均场理论和相关的弱相互作用冷却理论,在有、无超子两种情况下的中子星物质中研究含相对论效应的中子星冷却性质,并且与非相对论情况进行对比分析.考虑到极微小尺度上的引力会偏离牛顿引力,引入引力修正效应.结果表明中微子辐射的相对论效应降低了中微子发射率、发光度以及星体的冷却速度.在考虑引力修正的无超子的中子星物质中,相对论效应所引起的星体冷却速度降幅最大,对于两倍太阳质量的传统物质中子星可达56%,而超子物质中降幅最小,约为38%. Through the relativistic mean field theory and relevant weak interactional cooling theories, the relativistic cooling properties in conventional and hyperonic neu- tron star matter are studied. Also a comparison between relativistic and non-relativistic results with the consideration of the gravity correction is performed. Results show that the correction of relativistic effect in neutrino emission makes the neutrino emissivity, neutrino luminosity, and cooling rate be lower, in comparison with the non-relativistic case. Due to the correction of relativistic effect in neutrino emission, the cooling rate of neutron star has the largest decline, for the conventional neutron star matter with the consideration of gravity correction. The rate of decline reaches 56% for the conventional neutron star with a mass of two solar masses, however, the decline in hyperonic matter is the smallest, about 38%.

关 键 词： 恒星 中子 恒星 相对论效应 恒星 引力修正 恒星 超子

领　　域： [天文地球] [天文地球]