Quick Summary: The nature of the mysterious ‘little red dots’ discovered by the James Webb Space Telescope (JWST) has long been debated. The most distant black hole star found as part of the MoM (Mirage or Miracle) observation program suggests that these enigmatic objects are actually supermassive black holes shrouded in dense gas clouds. This discovery offers important clues about the formation of the early universe.
Why Are Little Red Dots So Confusing?
Since the James Webb Space Telescope turned its eyes to the sky, it has been delivering light from the deepest corners of the universe to us. However, some of this light is so peculiar that it has essentially divided astronomers. The most striking of these are the objects discovered in 2022, known as ‘little red dots.’
As their name suggests, these objects appear as small, red dots in the sky. But the intriguing part is that their spectra (light spectra) closely resemble those of cold, red stars, especially red giants. So, these objects could either be very cold, nearby stars, or incredibly distant and strange galaxies. This ambiguity makes them one of the universe’s greatest puzzles.
Observations so far indicate that these red dots are most likely supermassive black holes embedded within massive gas clouds. These black holes release tremendous energy as they consume surrounding matter; however, the dense gas and dust clouds around them absorb most of this energy, making them appear ‘red’ to us. So, you can imagine the universe’s wildest monsters as if wrapped in cotton candy.
How Does This New Discovery Change Things?
This is where the MoM (Mirage or Miracle) observation program comes into play. As the name suggests, this program focuses on ‘risky’ targets. Either they will make an incredible discovery, or they will encounter ‘fake’ signals, like nearby cold stars.
Jorryt Matthee, one of the lead researchers of the MoM program, stated that the program is built precisely on this uncertainty: “The Mirage or Miracle survey was specifically designed to target sources considered ‘risky’; they could be either surprising discoveries or just interlopers like cold, nearby stars that resemble distant galaxies.” During this survey, the most distant ‘black hole star’ (actually a black hole shrouded in a gas cloud) ever found was discovered. Contrary to expectations, this object serves as a ‘missing link’ between these two extremes.
This discovery sheds significant light on the debate about what ‘little red dots’ actually are. Because this newly found object behaves just like the red dots, but it is located much farther away and in a much younger universe. This could help us understand that such objects were much more common in the early universe and how they evolved over time.
What Is the Connection Between the Black Hole Star and Little Red Dots?
In fact, these two concepts may represent different stages of the same thing. The term ‘black hole star’ comes from the fact that a black hole covered by a gas cloud looks like a star from the outside. Little red dots are similarly objects that formed in a younger universe and are now being observed.
Recent observations show that some of these red dots are located at the centers of young galaxies whose light left about 12 billion years ago. However, these galaxies are so faint that even JWST cannot directly image them. Therefore, distinguishing the light of the black hole star from the galaxy’s light is quite challenging. This new discovery offers a unique opportunity to make that distinction.
| Parameter | Value |
|---|---|
| Discovered Object | Most Distant Black Hole Star |
| Observation Program | MoM (Mirage or Miracle) Survey |
| Redshift | Approximately 10 or more |
| Time of Existence | At least 13.1 billion years ago |
| Light Travel Time | Approximately 12 billion years (plus/minus 1 billion) |
| Date of First Discovery | 2022 |
How Will This Discovery Help Solve Webb’s Mystery?
The discovery of such objects plays a critical role in understanding the nature of ‘little red dots,’ one of JWST’s greatest mysteries. If these objects are indeed black holes shrouded in gas clouds, this could also shed light on the question of how black holes grew so rapidly in the early universe.
In our previous article, [The Universe’s High-Energy Map: eROSITA Discovers 2 Million X-ray Sources](https://galaktikuzay.com/evrenin-yuksek-enerji-haritasi-erosita-2-milyon-x-isini-kaynagi-kesfetti), we discussed eROSITA’s discoveries in mapping the universe’s high-energy sky. Now, JWST is giving these black hole hunters a new breath. Additionally, in our article [New Inhabitants of the Early Universe Through Webb’s Eyes: MACS J0308.9+2645](https://galaktikuzay.com/webbin-gozunden-erken-evrenin-yeni-sakinleri-macs-j0308-92645), we examined Webb’s observations of the early universe. This new discovery once again proves how important those observations were.
By studying such ‘missing link’ objects, astronomers will be able to obtain a much clearer picture of what happened in the first billion years of the universe. In particular, how these black holes formed and interacted with their surroundings could fundamentally change our theories about galaxy evolution.
From the Editor’s Desk: This discovery truly excites me. When ‘little red dots’ were first discovered, everyone was divided on what they were. Now, this ‘black hole star’ is like a detective, helping us piece together the clues. The fact that the universe’s wildest monsters hide behind gas clouds like cotton candy shows once again how creative nature is. I hope this discovery is just the beginning of even bigger surprises Webb will deliver in the coming years.
Frequently Asked Questions
What is a black hole star?
A black hole star is not actually a star. It is the name given to objects that appear like a star from the outside due to the dense gas and dust cloud surrounding them, but are actually supermassive black holes.
What are little red dots really?
Scientists believe that these little red dots discovered by JWST are most likely supermassive black holes shrouded in gas clouds. However, because the light from these objects mixes with the light of the galaxies around them, reaching a definitive conclusion is difficult.
Why is this discovery important?
This discovery establishes a link between ‘little red dots’ and black holes in the early universe, helping us understand how black holes grew so rapidly in the universe’s first epochs.
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