论文标题
在没有微透镜视差效应的情况下检测孤立的恒星质量黑洞
Detecting isolated stellar-mass black holes in the absence of microlensing parallax effect
论文作者
论文摘要
重力微透镜可以检测到孤立的恒星质量黑洞（BHS），根据种群合成模型，据信这是银河BHS的主要形式。以前对微透镜数据中的BH事件的搜索集中在长时间的事件上，具有显着的微透镜视差检测。在这里，我们表明，尽管BH事件优先具有较长的时间尺度，但微透明视差幅度幅度很小，以至于在大多数情况下，视差信号无法在统计学上显着检测到。然后，我们将OGLE-2006-BLG-044识别为候选BH事件，因为其长时间尺度和小的微透镜视差。我们的发现对微透镜数据中的未来BH搜索有影响。
Gravitational microlensing can detect isolated stellar-mass black holes (BHs), which are believed to be the dominant form of Galactic BHs according to population synthesis models. Previous searches for BH events in microlensing data focused on long-timescale events with significant microlensing parallax detections. Here we show that, although BH events preferentially have long timescales, the microlensing parallax amplitudes are so small that in most cases the parallax signals cannot be detected statistically significantly. We then identify OGLE-2006-BLG-044 to be a candidate BH event because of its long timescale and small microlensing parallax. Our findings have implications to future BH searches in microlensing data.
