论文标题
二进制中子星系的合并：多理智的革命
Mergers of binary neutron star systems: a multi-messenger revolution
论文作者
论文摘要
2017年8月17日，不到两年后，从合并的两个〜30 msun黑洞中直接检测重力辐射后，二元中子星的合并被确定为〜100 s持续时间的引力波信号的来源，其持续时间〜100 s，在小于50 mpc的地球上发生。费米和积分卫星在同一天空区域独立鉴定了一个短的GRB，用于高能天体物理学，事实证明这与重力事件有关。所有波长的迅速随访观察结果首先导致检测位于球体星系NGC4993中的光学和红外源，并延迟约10天，以检测无线电和X射线信号。本文重新审视了这些观察结果，并专注于早期的光学/红外源，该光学/红外源本质上是热的，并由通过合并中的快速中子捕获和在其后的相结合的阶段进行的快速中子捕获合成的不稳定同位素的放射性衰减提供了动力。还说明了这一事件对宇宙核合成和宇宙中重元素形成的历史的深远影响。
On 17 August 2017, less than two years after the direct detection of gravitational radiation from the merger of two ~30 Msun black holes, a binary neutron star merger was identified as the source of a gravitational wave signal of ~100 s duration that occurred at less than 50 Mpc from Earth. A short GRB was independently identified in the same sky area by the Fermi and INTEGRAL satellites for high energy astrophysics, which turned out to be associated with the gravitational event. Prompt follow-up observations at all wavelengths led first to the detection of an optical and infrared source located in the spheroidal galaxy NGC4993 and, with a delay of ~10 days, to the detection of radio and X-ray signals. This paper revisits these observations and focusses on the early optical/infrared source, which was thermal in nature and powered by the radioactive decay of the unstable isotopes of elements synthesized via rapid neutron capture during the merger and in the phases immediately following it. The far-reaching consequences of this event for cosmic nucleosynthesis and for the history of heavy elements formation in the Universe are also illustrated.
