Astronomers Find Little Red Dots About to Merge
Astronomers have identified 'Little Red Dots' (LRDs) in the early universe that appear to be merging, providing new insights into the growth of supermassive black holes. This research suggests that these LRDs are early-stage black holes whose interactions drive galactic evolution.
Why it matters
Understanding the origins of supermassive black holes is fundamental to our knowledge of how galaxies formed and evolved over 13 billion years.
There's widespread agreement that large galaxies in today's Universe host supermassive black holes (SMBH). But how exactly these black holes becane so massive isn't clear, even though astrophysicists know mergers have something to do with it. There are many unanswered questions around the process and how it's played out over more than 13 billion years of cosmic history.
Somehow, these SMBH behemoths came to have millions or billions of solar masses. Sgr. A*, the Milky Way's SMBH, has more than four million solar masses. One of the JWST's science goals is to observe the very early Universe for clues to how SMBH like Sgr. A* became so massive.
When the JWST discovered its infamous Little Red Dots (LRD), it generated excitement and curiosity. Most think that they're related to black holes, and could be the early stages of SMBH growth.
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