学术报告（20231016） Gravitational-wave echoes from interacting Quark stars and Strangeon Stars-华中科技大学天文学系

学术报告（20231016） Gravitational-wave echoes from interacting Quark stars and Strangeon Stars

作者：时间：2023-10-12 点击数：

报告题目：

Gravitational-wave echoes from interacting Quark stars and Strangeon Stars

报告人：

张晨博士

报告人单位：

香港科技大学

报告时间：

2023年10月16日下午14:00-15:30

报告地点：

精密重力测量科学中心大楼W510会议室

邀请人：

周恩平副教授

报告摘要：

It was conjectured that either quark matter or strangeon matter could be the ground state of matter even at zero pressure. The corresponding quark stars and strangeon stars can meet various astrophysical constraints on pulsars. In this talk, with a reparametrization and rescaling scheme that can maximally reduce the number of degrees of freedom, I will show that they can be compact enough to feature a photon sphere that is essential to the signature of gravitational-wave (GW) echoes. The minimum characteristic GW echo frequencies are of the kilohertz order. In particular, the echo frequency can be reduced to O(100) Hertz at a extended limit for strangeon stars.

报告人简介：

Dr. Chen Zhang received his BS in physics from Nanjing University in 2013, and then his MSc in 2014 and his PhD in 2020 from the University of Toronto in Theoretical High Energy Physics under the guidence of Prof. Bob Holdom. He then began his postdoctoral research at the University of Toronto and the University of Waterloo. Currently, he is a postdoctoral fellow at the Institute for Advanced Study, Hong Kong University of Science and Technology. He has published many works on the UV completion of Standard Model, quark matter, black holes, compact stars and gravitational waves, among which two papers appeared in Physical Review Letters and received worldwide media coverage such as Science.

参会人员：

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学术报告（20231016） Gravitational-wave ​echoes from interacting Quark stars and Strangeon Stars

学术报告（20231016） Gravitational-wave echoes from interacting Quark stars and Strangeon Stars