报告题目：Probing Fundamental Physics via Supermassive Black Hole Observations

报  告 人：陈一帆 博士，哥本哈根大学玻尔研究所

研究方向：粒子物理，黑洞引力以及量子精密测量

报告时间：2025年2月19日（星期三）上午10:00

报告地点：量子楼410报告厅

报告摘要：

Two recent milestones in astrophysical observation are the Event Horizon Telescope’s imaging of black hole shadows and pulsar timing arrays’ detection of a stochastic gravitational wave background consistent with supermassive black hole binary populations. This talk will review these breakthroughs and explore their implications for fundamental physics, focusing on the role of black holes as powerful transducers that can accumulate significant matter densities. For instance, when dark matter annihilates into electron-positron pairs, synchrotron radiation may be emitted under the influence of strong magnetic fields near the event horizon, potentially illuminating the black hole shadow and inner shadow due to the low electron density in the jet region. Additionally, matter surrounding supermassive black hole binaries can be ejected via three-body scattering, leading to orbital energy extraction and producing a characteristic turnover in the gravitational wave background spectrum. I will present current data constraints, best-fit models, and future prospects for these investigations.

报告人简介：

陈一帆，哥本哈根大学玻尔研究所博士后，曾先后在中国科学技术大学，巴黎综合理工，巴黎索邦大学，中国科学院理论物理研究所求学工作。主要研究结合粒子物理，黑洞引力以及量子精密测量。