论文标题
活动视野望远镜观察Sgr a $^*$的超轻玻色子的界限
Bounds on ultralight bosons from the Event Horizon Telescope observation of Sgr A$^*$
论文作者
论文摘要
最近对射手座A $^*$（SGR a $^*$）的观察结果，在Black Hole（BH）物理学中发现了各种未解决的问题。此外，它也可能探测出标准模型（BSM）方案之外的各种。最深刻的可能性之一是使用BH超赞（SR）寻找超轻质玻色子（ULB）。 EHT观察结果暗示SGR A $^*$具有非零的旋转。使用此观察结果，我们在具有纯粹重力相互作用的ULB的质量上得出了边界。考虑自我相互作用的超轻轴，我们将新区域限制在衰减常数的参数空间中，对于SGR a $^*$的一定旋转。对各种旋转BHS的未来观察可以改善对ULB的当前限制。
Recent observation of Sagittarius A$^*$ (Sgr A$^*$) by the Event Horizon Telescope (EHT) collaboration has uncovered various unanswered questions in black hole (BH) physics. Besides, it may also probe various beyond the Standard Model (BSM) scenarios. One of the most profound possibilities is the search for ultralight bosons (ULBs) using BH superradiance (SR). EHT observations imply that Sgr A$^*$ has a non-zero spin. Using this observation, we derive bounds on the mass of ULBs with purely gravitational interactions. Considering self-interacting ultralight axions, we constrain new regions in the parameter space of decay constant, for a certain spin of Sgr A$^*$. Future observations of various spinning BHs can improve the present constraints on ULBs.
