论文标题
Nanograv Pulsar定时数据的宇宙字符串解释
Cosmic String Interpretation of NANOGrav Pulsar Timing Data
论文作者
论文摘要
PULSAR时序数据用于在可能的随机重力波背景（SGWB）上提供上限。但是，Nanograv的合作最近报告了有力的随机常见过程，我们将其解释为宇宙字符串框架中的SGWB。可能的Nanograv信号将对应于（4 \ times 10^{-11}，10^{ - 10}）$在68％置信度下的字符串张力$gμ\，其频率与超大黑洞合并的频率不同。具有$Gμ$的宇宙弦生产的SGWB将超出LIGO的范围，但可以通过其他计划和建议的检测器来衡量，例如SKA，Lisa，Tianqin，Aion-1km，AEDGE，AEDGE，EINSTEIN，EINSTEIN，EINSTEIN，EINSTEIN望远镜和Cosmic Explorer。
Pulsar timing data used to provide upper limits on a possible stochastic gravitational wave background (SGWB). However, the NANOGrav Collaboration has recently reported strong evidence for a stochastic common-spectrum process, which we interpret as a SGWB in the framework of cosmic strings. The possible NANOGrav signal would correspond to a string tension $Gμ\in (4 \times 10^{-11}, 10^{-10}) $ at the 68% confidence level, with a different frequency dependence from supermassive black hole mergers. The SGWB produced by cosmic strings with such values of $Gμ$ would be beyond the reach of LIGO, but could be measured by other planned and proposed detectors such as SKA, LISA, TianQin, AION-1km, AEDGE, Einstein Telescope and Cosmic Explorer.
