论文标题
测量潮汐破坏事件的恒星和黑洞质量
Measuring stellar and black hole masses of tidal disruption events
论文作者
论文摘要
当恒星被超级质量黑洞潮湿时产生的耀斑具有诊断黑洞质量和恒星质量的潜力。我们提出了一种新方法，以基于光学/紫外线生产的物理模型来实现这一潜力，在该物理模型中，碎屑轨道散发器附近的冲击消散了轨道能量，然后从该区域辐射出来。耀斑峰值的光学/紫外线光度和色温的测量直接导致两个质量。黑洞质量主要取决于在峰值光度下观察到的温度，而干扰恒星的质量主要取决于峰值光度。我们介绍了{\ sc tdemass}，这是一种推断黑洞和恒星质量的方法，给定这两个输入量。使用{\ sc tdemass}，我们发现，对于21个良好测量的事件，黑洞质量在$ 5 \ times 10^5 $和$ 10^7 m_ \ odot $和中断的星星和初始质量在0.6至1300万美元\ odot $之间。可以在https://github.com/taehoryu/tdemass.git上获得{\ sc tdemass}基于{\ sc tdemass}基于{\ sc tdemass}工具的开源{\ sc python}。
The flare produced when a star is tidally disrupted by a supermassive black hole holds potential as a diagnostic of both the black hole mass and the star mass. We propose a new method to realize this potential based upon a physical model of optical/UV light production in which shocks near the apocenters of debris orbits dissipate orbital energy, which is then radiated from that region. Measurement of the optical/UV luminosity and color temperature at the peak of the flare leads directly to the two masses. The black hole mass depends mostly on the temperature observed at peak luminosity, while the mass of the disrupted star depends mostly on the peak luminosity. We introduce {\sc TDEmass}, a method to infer the black hole and stellar masses given these two input quantities. Using {\sc TDEmass}, we find, for 21 well-measured events, black hole masses between $5\times 10^5$ and $10^7 M_\odot$ and disrupted stars with initial masses between 0.6 and $13M_\odot$. An open-source {\sc python}-based tool for {\sc TDEmass} is available at https://github.com/taehoryu/TDEmass.git.
