Wednesday, July 02, 2025

Little Red dots

 BehindtheBlack reports that the Webb Telescope has discovered a new phenomenum:

Using the WebbSpaceTelescope astronomers have begun to compile a small catalog of what they call “little red dots” [LRDs], objects in the very early universe that are very small, too small to be galaxies and are thus a mystery.,,
The present most popular theory to explain the dots...is that the dots are newly formed black holes, their red light caused by material falling into the hole at millions of miles per hour.
That theory has of course problems. For example, it doesn’t explain why we don’t see these dots in more recent times. Nor does it explain why the dots are dim in X-rays, a radiation expected from accreting black holes.

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