论文标题
通过Ligo和处女座的第三次观察，从生物质量二进制物中广泛搜索引力波
Broad search for gravitational waves from subsolar-mass binaries through LIGO and Virgo's third observing run
论文作者
论文摘要
我们提出了从二进制组合的重力波的搜索，该引力波通过完成第三次观察跑步，其中使用Ligo和处女座天文台中的数据包含至少一个生物质量分量。观察与$ 1 \，m _ {\ odot} $合并的合并将是新物理学或原始黑洞总体存在的明显迹象；这些黑洞也可能有助于暗物质分布。我们的搜索目标是二进制目标，其中初级具有质量$ m_1 $在0.1-100美元之间20 \，m_ \ odot $。 $ m_1 <7 \，m_ \ odot，m_2> 0.5 \，m_ \ odot $的来源也可以具有轨道偏心，最高为$ e_ {10} \ sim 0.3 $。该搜索区域涵盖了可比至极高的质量比来源，最高$ 10^4：1 $。我们没有发现统计上令人信服的候选人，因此对合并率提出了新的上限；我们的分析设置了大多数二级源的第一个限制，以$ 7 \，m _ {\ odot} <m_1 <20 \，m _ {\ odot} $，并通过$ \ sim 8 \ sim 8 \ times $ $ $ $（1.6 \ times）$ \ sim $ $ $（1.6 \ times） 7 \，m _ {\ odot} $）。使用这些限制，我们将暗物质分数限制为1（0.5）$ \，M _ {\ odot} $黑洞的1（0.5）$ \％$以下。由于超出各个源距离距离的原始黑洞的合并速率很高，因此我们还以缺乏观察到的随机背景作为互补探针来限制暗物质分数。我们发现，尽管限制通常比直接搜索中的限制弱，但它们在$ 0.1 \，m _ {\ odot} $中的比例可比。
We present a search for gravitational waves from the coalescence of binaries which contain at least one subsolar mass component using data from the LIGO and Virgo observatories through the completion of their third observing run. The observation of a merger with a component below $1\,M_{\odot}$ would be a clear sign of either new physics or the existence of a primordial black hole population; these black holes could also contribute to the dark matter distribution. Our search targets binaries where the primary has mass $M_1$ between 0.1-100$\,M_{\odot}$ and the secondary has mass $M_2$ from 0.1-1$\,M_{\odot}$ for $M_1 < 20\,M_\odot$ and 0.01-1$\,M_{\odot}$ for $M_1 \ge 20\,M_\odot$. Sources with $M_1 < 7\,M_\odot, M_2 > 0.5\,M_\odot$ are also allowed to have orbital eccentricity up to $e_{10} \sim 0.3$. This search region covers from comparable to extreme mass ratio sources up to $10^4:1$. We find no statistically convincing candidates and so place new upper limits on the rate of mergers; our analysis sets the first limits for most subsolar sources with $7\,M_{\odot}< M_1 < 20\,M_{\odot}$ and tightens limits by $\sim 8\times$ $(1.6\times)$ where $M_1 > 20\,M_{\odot}$ ($M_1 < 7\,M_{\odot}$). Using these limits, we constrain the dark matter fraction to below 0.3 (0.7)$\%$ for 1 (0.5)$\,M_{\odot}$ black holes assuming a monochromatic mass function. Due to the high merger rate of primordial black holes beyond the individual source horizon distance, we also use the lack of an observed stochastic background as a complementary probe to limit the dark matter fraction. We find that although the limits are in general weaker than those from the direct search they become comparable at $0.1 \,M_{\odot}$.
