期刊论文

A Brief Review on Kilonovae or Mergernovae

中文

天文学报

0001-5245

2019

60

1

64-78

10.15940/j.cnki.0001-5245.2019.01.006

11473008:国家自然科学基金 11822302:国家自然科学基金 11833003:国家自然科学基金

本校为第一机构

中子星-中子星或中子星-黑洞的并合可以导致强烈的高频引力波辐射,同时它们也可以通过向外抛射物质发出多种类型的电磁辐射信号,因而是当前多信使天文学研究的主要对象之一.在各种电磁辐射信号中,由抛射物所发出的热暂现源辐射被称为千新星,或可更广义地称为并合新星,其辐射能量来源主要是抛射物中放射性重元素的衰变和中心并合产物的持续能量输出(如自转能损).这种现象最早由Li和Paczynski在1998年从理论上预言提出,并最终在2017年的引力波事件GW170817中被观测证实.千新星(并合新星)观测在GW170817事件中发挥了关键性的电磁对应体作用,帮助人们精确定位引力波信号、证认其天体物理起源乃至限制...

While mergers of neutron star-neutron star and neutron star-black hole binaries can radiate intense high-frequency gravitational waves (GWs), they can also produce various electromagnetic emission by ejecting material outwards. Therefore, these merger events are the most important targets of current multi-messenger astronomical studies. The thermal transient emission from a merger ejecta is called a kilonova or, more generally, a mergernova, which is powered by the radioactive decays of r-process elements, and the energy injection from the central merger product. This phenomenon was first pred...