题目：Gamma-Rays and Gravitational Waves from Millisecond Pulsars: Magnetospheric Physics and the Galactic Center Excess
主讲人：黄晓渊 中国科学院紫金山天文台研究员
时间：2025年12月26日（周五)上午10 :00
地点：犀浦校区二号教学楼2539会议室
主持人：辛玉良 副教授
简历：黄晓渊，中国科学院紫金山天文台研究员，博士生导师。2013年获中国科学院大学天体物理博士学位。曾先后在德国马普物理研究所、紫金山天文台（DAMPE合作组）、德国慕尼黑工业大学（获洪堡奖学金资助）及丹麦尼尔斯玻尔研究所从事博士联合培养与博士后研究工作。2020年起任紫金山天文台研究员，主要从事暗物质间接探测与相关的高能天体物理研究。
摘要：Millisecond pulsars (MSPs) sit at the crossroads of extreme magnetospheric physics and a long-standing Galactic Center mystery: the GeV Excess (GCE), for which MSPs remain the leading astrophysical explanation. In this talk, I present a multi-messenger investigation that links gamma-ray phenomenology to gravitational-wave prospects. First, using 15 years of Fermi-LAT observations, we uncover a robust phase-resolved correlation between gamma-ray luminosity and spectral cutoff energy in our MSP sample. This trend provides new evidence favoring particle acceleration and curvature radiation associated with the Equatorial Current Sheet, and it highlights tensions with standard Outer Gap interpretations. Second, we turn to the GCE debate. If the excess is powered by thousands of unresolved bulge MSPs, can we hear them through continuous gravitational waves? We systematically model the expected continuous-wave emission from such a population under representative deformation scenarios and realistic search considerations. While the predicted signals are below the reach of current detectors, next-generation interferometers, such as the Einstein Telescope and Cosmic Explorer, could probe a detectable fraction of the population, offering an independent multi-messenger test of the MSP origin of the Galactic Center Excess.
