论文标题
一个X射线安静的黑洞出生，在大麦芽云中的巨大二进制
An X-ray quiet black hole born with a negligible kick in a massive binary within the Large Magellanic Cloud
论文作者
论文摘要
恒星质量的黑洞是出生于15个太阳能质量的星星的最后残留物。预计数十亿人将居住在当地群体中，但只有很少的知名度是通过发射的X射线来检测到的，因为它们会从同伴星中吸收材料。在这里，我们报告了VFTS 243：大麦芽云中的X射线微弱的二进制。它的轨道周期为10.4-D，包括25个太阳能的O型星和至少9个太阳能的看不见的伴侣。我们的频谱分析在5- sigma置信度的水平上排除了非分类伴侣。最低伴侣质量意味着它是一个黑洞。在我们的银河系外，没有其他X射线安静的黑洞在我们的银河系外面闻名。 VFTS的（近）圆形轨道和运动学243表明，祖细胞倒入黑洞的崩溃几乎没有或没有弹出的材料或黑洞踢。识别这种独特的二进制基本上会影响跨宇宙的核心 - 循环超新星的重力波检测和性质的预测速率。
Stellar-mass black holes are the final remnants of stars born with more than 15 solar masses. Billions are expected to reside in the Local Group, yet only few are known, mostly detected through X-rays emitted as they accrete material from a companion star. Here, we report on VFTS 243: a massive X-ray faint binary in the Large Magellanic Cloud. With an orbital period of 10.4-d, it comprises an O-type star of 25 solar masses and an unseen companion of at least nine solar masses. Our spectral analysis excludes a non-degenerate companion at a 5-sigma confidence level. The minimum companion mass implies that it is a black hole. No other X-ray quiet black hole is unambiguously known outside our Galaxy. The (near-)circular orbit and kinematics of VFTS 243 imply that the collapse of the progenitor into a black hole was associated with little or no ejected material or black-hole kick. Identifying such unique binaries substantially impacts the predicted rates of gravitational-wave detections and properties of core-collapse supernovae across the Cosmos.
