摘要
磁星作为高能天体物理研究热点源之一,是一类具有超强磁场、并且在X射线和软伽玛射线能段较活跃的中子星.使用爱因斯坦探针卫星(Einstein Probe,EP)全天监测,我们预期能通过探测磁星的X射线爆发现象而至少在EP运行3年期间发现3颗新磁星,并同时监测已知23颗磁星的可能活动.EP的全天监测结果将帮助估算磁星的数目、理解恒星演化和超新星爆发.根据EP的监测,还可以及时开展多波段观测,研究磁星的辐射机制和背后的物理特性与过程.另外,EP也能监测其他类中子星可能的突变活动,帮助理解此类现象的物理本质.
Magnetars are active X-ray and soft gamma-ray sources in the sky, and are believed to be young neutron stars powered by their ultra-high surface magnetic fields. With the all-sky monitoring capability of the Einstein Probe （EP）, we expect to be able to find 3 new magnetars through their X-ray outburst activity, and will also be able to study the X-ray activities of more than 20 currently known magnetars. The EP＇s observations will thus help estimate the total number of magnetars in the Milky Way and understand their formation channels in stellar evolution and supernova explosions. In addition, multi-wavelength observations can be conducted once a magnetar is found to be in the active state with EP. The studies will help understand the magnetars＇ overall emission properties and the underlying physical processes. Although it is rare, magnetar-like activity was also seen in other classes of young neutron stars. EP will be able to monitor those neutron stars, for finding more such events and thus help determine if any intrinsic property between magaetars and other neutror~ stars could play a key role in inducing such activity.
出处
《中国科学：物理学、力学、天文学》
CSCD
北大核心
2018年第3期90-94,共5页
Scientia Sinica Physica,Mechanica & Astronomica
基金
中国科学院战略性先导科技专项(编号:XDA15052100)资助项目
关键词
磁星
爆发
X射线
magnetars, outburst, X-ray
