The James Webb World Camp Telescope has unveiled many miracles of the early universe, but only a few discoveries have confused astronomers more than some mysterious “small red dots”. These tiny, brilliant galaxies appear over Deep Space pictures such as cosmic bread crumbs and challenge everything that scientists considered, how galaxies formed in the early universe.
These weak, compact objects were completely undiscovered and represented before the James Webb World Space Telescope, which the leading researcher Fabio Paccucci “probably refers to the most surprising discovery of JWST to this day”. The small red dots are from the time when the universe was only a billion years old and looked around a tenth of the size of typical galaxies, and seemed unusually bright.
Scheme of the James Webb World Cup telescope (loan: NASA)
The Center for Astrophysics by Harvard & Smithsonian believes that they have broken the code. In a new study by astronomers Paccucci and Abraham Loeb suggest that these strange objects were formed in extremely rare, slow -rotating structures of dark matter. Their characteristic red color indicates that they are either packed in dust or with older stars. But here things get really puzzling, the source of their incredible light edition escapes us. When it comes from black holes, these black holes would be incredibly massive for such tiny galaxies. If it comes from stars alone, the galaxies would be packed so densely that physics seems impossible.
Instead of concentrating on what makes the points shine, Paccucci and Loeb asked another question; How have such strange objects primarily formed? Your answer includes the invisible scaffold, which shapes our universe, Dark Matery Halos.
Simulated dark matter halo
Think of dark matter halos like the rotating mechanism of a swing ride. Similar to the swings on a exhibition center, the faster the Halo spins rotates, the further stretching the swings, which leads to the galaxy in the middle. Likewise, a slow spin keeps the radius of the swings smaller.
The researchers discovered that there were probably small red dots in the dark matter, which were slowly turning that they represent less than one percent of all halos in the universe. These low spin -halos would of course create extremely compact galaxies in a hypothesis that elegantly explains several secrets about the small red dots.
Since only one percent of the halos of Dark matter turn slowly, compact galaxies would be equally rare and this fits well with what astronomers observe. The theory also explains its special timing, whereby the points only appear during a short billion -back window, since the universe, which has been aged and expanded, naturally won more spin, which made it almost impossible to form such compact structures later. Finally, the brightness puzzle makes sense, since low spin -necked halos tend to concentrate the mass in the middle and create ideal conditions for a black hole in order to quickly acquire the matter or form with extraordinary installments.
“Our work is a step to understand these mysterious objects. They could help us understand how the first black holes in the early universe develop and develop together with galaxies.” – Fabio Paccucci from Harvard & Smithsonian Center for Astrophysics
While this theory is not definitely determined whether the points of stars or super massive black holes are driven, it offers the first convincing frame to understand how these strange objects could exist at all. Research suggests that these compact galaxies caused ideal conditions for fast growth, be it due to explosive star formation or insatiable black hole feeding.
While the astronomers continue to examine these wonderful natural time capsules, the small red dots can unlock secrets about the most formative time of the universe when the first stars ignited and the first black holes began their billions in annual growth, which would ultimately shape the universe we see today.
Source: New theory can explain mysterious “small red dots” in the early universe
