用盖亚和THEIA探索早期宇宙
Exploring the Early Universe with Gaia and THEIA
摘要：
最近有人指出，盖亚是能够检测到一个随机的引力波背景之间的脉冲星定时阵列和LISA的频率的灵敏度带。我们认为，盖亚和THEIA具有巨大的潜力，早期宇宙学，因为这样的频率范围是理想的探测相变在不对称暗物质，SIMP和宇宙学QCD过渡。此外，还有可能探测到在这种早期宇宙过渡期间产生的太阳质量范围内的原始黑洞，并将它们与QCD时代预期的黑洞区分开来。最后，我们讨论了潜在的盖亚和THEIA探测拓扑缺陷和盖亚的能力，可能揭示最近的NANOGrav结果。
英文摘要：
It has recently been pointed out that Gaia is capable of detecting a stochastic gravitational wave background in the sensitivity band between the frequency of pulsar timing arrays and LISA. We argue that Gaia and THEIA has great potential for early universe cosmology, since such a frequency range is ideal for probing phase transitions in asymmetric dark matter, SIMP and the cosmological QCD transition. Furthermore, there is the potential for detecting primordial black holes in the solar mass range produced during such an early universe transition and distinguish them from those expected from the QCD epoch. Finally, we discuss the potential for Gaia and THEIA to probe topological defects and the ability of Gaia to potentially shed light on the recent NANOGrav results.
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