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Little Red Dots May Be Early Stages of Supermassive Black Holes
Developing
In Short: New research suggests the mysterious Little Red Dots observed by the JWST could be forming supermassive black holes.
When the James Webb Space Telescope (JWST) discovered its infamous Little Red Dots (LRD), it sparked excitement and curiosity among scientists.
Some researchers believe these dots are the visible parts of a population of super-Eddington black holes, indicating that there could be many more waiting to be discovered.
Astrophysicists agree that large galaxies today host supermassive black holes (SMBH), but the exact process of how these black holes grow to such massive sizes remains unclear.
New research published in the Publications of the Astronomical Society of Japan presents evidence that LRDs are early black holes, and their mergers could lead to the formation of SMBH.
Understanding the growth of these black holes is crucial, as they challenge the conventional limits set by the Eddington limit, which theoretically restricts the size black holes can grow to by the time the JWST observed them.
What's still developing
- But how exactly these black holes becane so massive isn't clear, even though astrophysicists know mergers have something to do with it.
- Discovery of dual “little red dots” indicates excess clustering on kilo-parsec scales.
- "The tight relation between black hole mass and galaxy properties, such as stellar velocity dispersion, bulge mass, and stellar mass observed in the local universe implies that SMBHs influence star formation in galaxies through feedback from active galactic nucleus (AGN) activity," they write.
- Observatories like LIGO and Virgo have found collisions between black holes whose masses sit inside an “upper mass gap” - essentially black holes of sizes where stellar evolution says stars can’t create black holes.
- Rinaldi - Black holes become comoving with the universe UT - Quiet Black Holes With a Stellar Companion Raise Questions About How They Form UT - Black Hole Collisions Tell a Tale of Repeating Mergers UT - Another First for the JWST: It Detects Three Supermassive Black Holes in the Same Galaxy Andy has been interested in space exploration ever since reading Pale Blue Dot in middle school.
- We also know that gravitationally bound objects, such as solar systems and black holes, seem to be immune to that expansion.
- They suggest that black holes can’t just ignore the expanding universe around them.
- To understand an alternative solution, we first have to look at how physicists model black holes themselves.
Sources
- Universe Todaylink