OJ 287: Potential Rosetta stone for the nascent multi-messenger nano-Hz GW astronomy
Abstract: The bright blazar OJ 287 is the best-known candidate for hosting a supermassive black hole binary (SMBHB) in the present observable universe.
The group's research on strong gravity involves finding analytical and numerical solutions of Einstein's theory of general relativity, and many of its extensions, either in vacuum or coupled to various types of matter. For our latest developments/activities in this area, please see the listing at the end of this article.
The prime examples of (relativistic) strong gravitational systems are Black Holes. They are truly unifying objects of all physics. The understanding of their formation and dynamics requires the laws of all four fundamental forces, and their physics is relevant not only for astrophysics and cosmology but for a variety of topics within high energy physics.
See here a movie made by the COST action `Black holes in a violent universe', in which our group participates, for a visual overview of different types of black holes.
Abstract: The bright blazar OJ 287 is the best-known candidate for hosting a supermassive black hole binary (SMBHB) in the present observable universe.
An international team of scientists led by the University of Aveiro and the Galician Institute for High Energy Physics shows, in a paper published in Physical
Geons
J. A. Wheeler,
Phys. Rev. 97 (1955) 511-536
The December 2020 issue of the Aveiro University magazine "Linhas UA" includes a feature article covering work at Gr@v and the mysteries of black holes. Check this issue here.