| Number | R7-4 / IPMU/ILANCE/ICRR joint seminar |
| Date | Thu,Oct 16, 2025 13:00- |
| Place | ICRR 6F Large seminar room Zoom: https://u-tokyo-ac-jp.zoom.us/j/88278422832?pwd=xCIRp40IU0byofs7xabaAC5TkiGGlo.1 |
| Speaker | Leo Tsukada (Nevada Center of Astrophysics at University of Nevada) |
| Title | “A Decade of Gravitational-Wave Astronomy: Insights from GWTC-4 on demographics and Future Directions” |
| Abstract | It has been ten years since the first direct detection of gravitational waves opened an entirely new window onto the universe. Over the past decade, observations have transformed our understanding of compact objects and their mergers. The recently released fourth Gravitational-Wave Transient Catalog (GWTC-4) has nearly doubled the number of confidently detected signals, providing unprecedented statistical power to probe the astrophysical population of black holes and neutron stars. In this talk, I will review the contents of GWTC-4 and highlight key findings from current population studies, including new constraints on the population parameters. I will also discuss the limitations of existing approaches to population inference and introduce a novel method that leverages information from the detection pipeline to extract additional insights. Finally, I will outline the prospects for gravitational-wave astronomy in the coming years, as expanding catalogs, improved detectors, and innovative analysis strategies promise to further deepen our understanding of compact objects and the gravitational-wave universe. |
