Based on its radiation intensity, the team conservatively estimates its mass at 500 times that of the sun, says Farrell, now at the University of Leicester in the United Kingdom.

• 法雷尔说：根据其辐射强度，研究小组保守地估计，该黑洞的质量是太阳质量的500倍。法雷尔现在供职于英国的莱斯特大学。