Black Holes

Media coverage of "Constraints on Stupendously Large Black Holes"

My work with Bernard Carr (Emeritus, Queen Mary University of London) and Florian Kühnel (Münich) on black holes is ranked #128 in all time media coverage of the Monthly Notices of the Royal Astronomical Society outputs. The published version of the paper is available on Monthly Notices of the Royal Astronomical Society 501 (2) 2029–2043 (2021).

Black Holes

Black holes as laboratories for dark sectors, gravity, high-energy particles, and gravitational waves.

Testing the rotational nature of the supermassive object M87* from the circularity and size of its first image

The Event Horizon Telescope (EHT) collaboration has recently released the first image of a black hole (BH), opening a new window onto tests of general relativity in the strong field regime. In this paper, we derive constraints on the nature of M87* (the supermassive object at the center of the galaxy M87), exploiting the fact that its shadow appears to be highly circular, and using measurements of its angular size.