Oscillations and Collapses of Proto-Neutron Stars

作     者：吕君丽 Wan Mew-Bing 

作者机构：Department of Physics Hunan Normal University Changsha 410081 Department of Physics Washington University One Brookings Drive St. Louis MO 63130 USA 

出 版 物：《Chinese Physics Letters》 (中国物理快报（英文版）)

年 卷 期：2009年第26卷第1期

页      面：32-35页

核心收录：

学科分类：07[理学] 070401[理学-天体物理] 0805[工学-材料科学与工程（可授工学、理学学位）] 0704[理学-天文学] 

基　　金：the Foundation of Education Committee of Hunan Province the McDonnell Center for the Space Sciences, Washington University the NSF Grant MCA 

主　　题：RELATIVISTIC STELLAR MODELS APPROACHING SCHWARZSCHILD LIMIT DYNAMICAL INSTABILITY GENERAL RELATIVITY ANALYTIC ANALYSIS RADIAL PULSATION general relativity Thermal energy fundamental mode Unstable wide-range Napier's constant Oscillations Collapse Radiation OSCILLATION MODES RELATIVISTIC STARS 

摘      要：We examine the oscillation and collapse of a relativistic star, e.g., a proto-neutron star, with an equation of state （EOS） which is Mowly changing as driven by, e.g., losing of thermal energy through radiations. We find that the frequency of the fundamental mode of oscillation （radial） will gradually increase then abruptly drop to zero when the star gets close to the point of instability. We also find that for a wide range of configurations on the unstable branch of equilibrium configurations, the collapse is dominated by one unstable mode.