Red Dots in Space Turned Out to Be Growing Black Holes ⚡ экспресс
Observations from the James Webb Space Telescope have revealed a swarm of compact 'red dots' (LRDs) with baffling spectra. The study found that their light comes not from stars, but from matter spiraling into direct-collapse black holes — gas heats up as it falls and radiates the energy away. Hydrodynamic simulations reproduce all their strange features: weak X-rays, the presence of metals despite no star formation, and their unexpected mass and compactness. Notably, the ultraviolet glow is reprocessed radiation, not a blackbody, and is only slightly dimmed by a thin veil of dust. So these objects are witnesses to the widespread birth of massive black hole seeds in the primeval halos of the early cosmos.
The James Webb telescope peered into the early universe and saw a multitude of mysterious red dots. Their glow didn't resemble familiar galaxies or stars. The answer was unexpected: these are growing black holes, born without a stellar stage. A hydrogen cloud, skipping the infancy of a star, collapses straight into a cosmic monster. Such a newborn then greedily pulls in matter, heating it to a bright glow. Around the hole, a dense gas cocoon forms, which absorbs X-rays but is transparent to visible and infrared light. That's why for Webb the dots are red, while for X-ray telescopes they are almost invisible. Analysis showed that some of these black holes already had a mass of a million Suns in their infancy — comparable to the monsters at the centers of galaxies. This explains how supermassive black holes managed to accumulate billions of solar masses in just a few hundred million years after the Big Bang. In essence, Webb captured the moment of their turbulent infancy.
🎯 Supermassive black holes can grow so fast that their mass doubles in just 10 million years — by cosmic standards, that's an instant.
🎬 It's like the birth of the black hole Gargantua from Interstellar, but without a stellar collapse — right in the early universe.