First Polarized Image of Black Hole Hints at Its Magnetic Field Structure

A view of the M87 supermassive black hole in polarized light. The lines mark the orientation of polarization, which is related to the magnetic field around the shadow of the black hole. EHT Collaboration

Astronomers from the Event Horizon Telescope (EHT) collaboration have produced the first-ever polarized picture of a black hole.

In 2019, the same team obtained the first-ever image of a black hole. Both images were taken of the same object in the center of the M87 galaxy.