Fog Passes Off Tiny Black Holes as Giants ⚡ экспресс
Little red dots (LRDs) possess a set of properties not found together in any other class of galaxies or active nuclei. These properties draw analogies to the Great Eruption of Eta Carinae and Type IIn supernovae, suggesting a self-consistent scenario. Outflows from the central source create a dense gas shell (slow wind), where high opacity forms a pseudo-photosphere that radiates as a blackbody and hides the engine. Fast winds colliding with the shell generate shock waves, while electron scattering and absorption in a clumpy medium explain broad line wings and P-Cygni profiles. A proposed argument based on escape velocity constrains the engine mass: M < 10^5 M⊙. The lack of variability and low photospheric gravity point to intermediate mass (10^3–10^6 M⊙) and super-Eddington luminosity (>5 L_edd). This explains the apparent overmassiveness of black holes and suggests that LRDs are seeds of massive black holes, evolving via dust formation into classical active nuclei.
A powerful searchlight in thick fog is invisible — we only notice a huge glowing cloud. Fog scatters light and makes it redder. Similarly, cosmic gas around black holes hides their true size. The Webb telescope detected red dots that seemed to be galactic cores with supermassive black holes. A new perspective says: they are gas cocoons inflated by radiation from objects thousands of times lighter.
If the guess is correct, then many 'giants' of the early Universe are actually infant black holes. Over time, the gas will disperse, revealing either a black hole or a supermassive star. In the process, cosmic dust will be born — raw material for new stars, as in supernova explosions of type IIn. The spectral lines of these dots are blurred, like in a smeared photograph — the gas motion betrays the true picture. Thus, from the fog, future masters of galaxies are born.
🎯 In 1843, the star Eta Carinae became the second brightest in the sky, even though it was 7,500 light-years away. Its light was amplified by a gas shell — just like the 'baby' black holes we see in the red dots.