圈量子引力中旋转黑洞的观测喷流功率与辐射效率的特征
Signatures from the observed jet power and the radiative efficiency for rotating black holes in loop quantum gravity
AI总结：
本文研究圈量子引力旋转黑洞的辐射效率与喷流功率，发现LQG参数对不同自旋黑洞影响不同，并利用多个观测源约束黑洞自旋和LQG参数，指出GRS 1915+105无法同时解释喷流功率与辐射效率。
摘要：
我们在圈量子引力（LQG）框架下研究旋转黑洞时空中的辐射效率和喷流功率，该框架包含一个额外的LQG参数。结果表明，随着LQG参数增大，慢速旋转黑洞的辐射效率降低，而快速旋转黑洞的辐射效率升高。此外，发现不同黑洞自旋下的喷流功率均有所增加。利用来自著名源A0620-00、H1743-322、XTE J1550-564、GRS1124-683、GRO J1655-40和GRS1915+105的观测数据，我们对黑洞自旋参数和LQG参数施加了一些约束。LQG参数的存在拓宽了源A0620-00、H1743-322、XTE J1550-564和GRO J1655-40的黑洞自旋参数允许范围。然而，对于源GRS 1915+105，允许的参数区域之间没有重叠，这意味着旋转LQG黑洞无法像其他黑洞时空那样同时解释观测到的喷流功率和辐射效率。
英文摘要：
We investigate the radiative efficiency and jet power in the spacetime of a rotating black hole within the framework of loop quantum gravity (LQG), which includes an additional LQG parameter. The results show that as the LQG parameter increases, the radiative efficiency decreases for slowly rotating black holes while it increases for rapidly rotating black holes. Furthermore, the jet power is found to increase for different black hole spins. With the observed data from the well-known sources A0620-00, H1743-322, XTE J1550-564, GRS1124-683, GRO J1655-40, and GRS1915+105, we make some constraints on the black hole spin parameter and the LQG parameter. The presence of the LQG parameter broadens the allowed range of the black hole spin parameter for sources A0620-00, H1743-322, XTE J1550-564 and GRO J1655-40. However, for the source GRS 1915+105, there is no overlap between the allowed parameter regions, which implies that the rotating LQG black hole cannot simultaneously account for the observed jet power and the radiative efficiency as in other black hole spacetimes.
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