论文标题
在来自纳米格拉夫12.5年数据的重力波源上
On the gravitational wave sources from the NANOGrav 12.5-yr data
论文作者
论文摘要
Nanograv的合作最近报告了PULSAR定时数据中随机常见过程的有力证据。我们评估将这一过程解释为超大黑洞二进制的合并和/或早期宇宙中各种随机重力波背景源的合并，包括一阶相变，宇宙弦，域，域壁和较大的振幅曲率扰动。我们讨论了约束对这些可能来源的含义。发现宇宙弦是基于贝叶斯因子分析的其他重力波源的最受欢迎的来源。
The NANOGrav Collaboration recently reported a strong evidence for a stochastic common-spectrum process in the pulsar-timing data. We evaluate the evidence of interpreting this process as mergers of super massive black hole binaries and/or various stochastic gravitational wave background sources in the early Universe, including first-order phase transitions, cosmic strings, domain walls, and large amplitude curvature perturbations. We discuss the implications of the constraints on these possible sources. It is found that the cosmic string is the most favored source against other gravitational wave sources based on the Bayes factor analysis.
