| 报告题目： |
Detection of gravitational waves: from nanohertz to the audio band |
| 报告人： |
Xingjiang Zhu |
| 报告人单位： |
University of Western Australia |
| 报告时间： |
2017年4月11日10:00 |
| 报告地点： |
引力中心三楼会议室 |
| 报告摘要： |
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In this talk I will first give an overview of gravitational waves and a brief history of detection efforts across the gravitational wave spectrum. I will review the recent LIGO detections of signals from coalescing stellar-mass binary black holes. While such individual binary coalescence events can be probed up to a distance of ~Gpc, the vast majority of binary mergers throughout the Universe are expected to form a stochastic background. I will describe the detectability of such a background for advanced LIGO and its impact on searches of primordial gravitational waves. The second part of this talk will focus on gravitational wave detection in the nanohertz frequency band through pulsar timing arrays. While no detection has been made so far, it is believed to be likely that the gravitational wave window can be extended to lower frequencies within 5-10 years. After giving some status updates on various timing array programs, I will describe searches for gravitational waves from individual supermassive black hole binaries with Parkes Pulsar Timing Array. I will conclude with some remarks regarding the future of gravitational wave astronomy. |
| 报告人简介： |
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Dr. ZHU Xingjiang is currently a research associate at School of Physics, University of Western Australia (UWA) in Perth, and the Australian Research Council Center of Excellence for Gravitational Wave Discovery (OzGrav). He obtained his PhD degree in Physics from UWA in 2016. His research interests include gravitational wave detection with radio timing observations of pulsars, gravitational wave data analysis, theoretical modelling of astrophysical gravitational waves sources and multi-messenger astronomy. |
