Chandra adds X-ray evidence to the mystery of Webb’s red dots

Observations from NASA’s Chandra X-ray Observatory are giving astronomers another way to investigate the compact red objects revealed by the James Webb Space Telescope.

The objects, often called little red dots, have raised questions about the balance between stars, dust and growing black holes in the early universe. An X-ray detection provides information that complements Webb’s infrared view.

The finding supports investigation of a possible transitional stage involving an actively growing supermassive black hole. It does not settle the identity of every red dot. Combining observations at different wavelengths is helping researchers test competing explanations for this newly prominent population.