Blazar OJ 287 is our best known candidate to be an AGN with a binary black hole as a central engine. Pretty groovy, if you ask me. Plus, we might even be able to take a picture of it! Read on to learn more.
In this summary of a classic paper from 1939, we look back at the very first theory of black hole formation: Oppenheimer and Snyder’s model of a spherically collapsing ball of dust.
In 2019, the Event Horizon Telescope collaboration released the first image of a black hole. Now, they have new polarization measurements that probe its magnetic field.
What superpower does a dwarf galaxy have?
Today’s authors work out a full orbital solution for a binary microlensing system, indicating the method’s potential to probe the mass distribution of dark objects.
Astronomers show how the ELT will allow us to discover new black holes.