γ射线暴:从中子物质到夸克胶子等离子体的相变  

Gamma Ray Bursts: Phase Transition from Neutron Matter to Quark-Gluon Plasma

作　　者：洪碧海[1] 李小波[2] 

机构地区：[1]丽水学院物理系 [2]上海交通大学物理系,上海200030

出　　处：《丽水学院学报》2005年第2期23-27,45,共6页Journal of Lishui University

摘　　要：指出快速旋转的新生中子星内部存在着从正常强子物质到夸克胶子等离子体的相变过程,而γ射线暴所释放的巨大能量可能正是这种相变过程的结果。在新诞生的中子星通过偶极电磁辐射和四极引力辐射损失能量而减速时,其中心密度增加,并可能达到QCD的相变密度(原子核密度的5～10倍)。这种相变所释放出的能量可以解释γ射线暴的强大能量暴发及其聚束效应。γ射线暴位置附近相当致密的气体环境和在其X射线余辉中金属发射线的观测是对这种观点的支持。我们还给出了一些预言。It is suggested that the inner energetic engine of gamma ray burst (GRB) may be the result of the transition of normal hadronic matter to quark-gluon plasma (QGP) in rapidly-rotating and spin-down newborn neutron stars. When such a nascent neutron star slows down through dipole electromagnetic and quadruple gravitational radiation, the increasing center may reach the QCD transition density, i.e., 5-10 times of nuclear density. Such kind of energy release from the phase transition would be responsible for GRB location and the iron lines observed in the X-ray afterglow support this idea. Some predictions in this model are given.

关 键 词：Γ射线暴 GRB 夸克胶子等离子体 QGP 奇异夸克物质 SQM 超新星 SUPERNOVA 

分 类 号：P142[天文地球—天体物理]