Astronomy and Astrophysics Seminars

OJ 287: Potential Rosetta stone for the nascent multi-messenger nano-Hz GW astronomy

by Lankeswar Dey

Tuesday, August 4, 2020 from to (Asia/Kolkata)
at via Zoom
Recent observational campaigns and theoretical investigations strongly indicate the presence of a spinning supermassive black hole binary that spirals in due to the emission of nano-Hertz gravitational waves in bright blazar OJ 287. I will briefly describe these efforts while focusing on our August 2019 Spitzer observations of OJ 287 and its implications. Additionally, I will list our ongoing efforts, relevant to i) the Event Horizon Telescope consortium and ii) the International Pulsar Timing Array consortium which aims to detect GWs from such massive BH systems in the near future. These efforts should be helpful to achieve multi-messenger nano-Hz GW astronomy in the near future.