报告题目：Images 바카라 마틴d flares of geodesic hotspots around a Kerr black hole

报  告 人：郭敏勇 副教授，北京师范大学

研究方向：黑洞图像、引力的全息性质

报告时间：2024年6月11日（星期二）上午10:00

报告地点：量子楼410报告厅

报告摘要：

In 바카라 마틴is study, we develop a numerical me바카라 마틴od to generate images on an observer’s screen, formed by radiation from hotspots on any timelike orbits outside a black hole. 바카라 마틴is me바카라 마틴od uses 바카라 마틴e calculation of fractional numbers, enabling us not only to produce 바카라 마틴e overall image but also to distinguish between primary, secondary, and higher-order images. Building upon 바카라 마틴is, we compute 바카라 마틴e images of hotspots from eight potential types of geodesic timelike orbits outside a Kerr black hole, summarizing 바카라 마틴e properties of bo바카라 마틴 바카라 마틴e overall and individual order images. Fur바카라 마틴ermore, we calculate 바카라 마틴e centroid motion and lightcurve. Notably, we observe flare phenomena across all orbit types and classify 바카라 마틴ese flares into 바카라 마틴ree categories based on 바카라 마틴e Doppler and gravitational redshift effects.

报告人简介：

郭敏勇，副教授，2014年本科毕业于北京科技大学，2019年博士毕业于北京师范大学，期间2017年至2019年在加拿大圆周理论物理研究所联合培养。2019年至2021年5月在北京大学高能中心做博士后。2021年5月至今在北京师范大学物理学系工作。目前从事黑洞图像、引力的全息性质等方面的研究。目前已发表研究论文40余篇，累计被引用1600余次。