Supermassive black holes could be formed out of dark matter, scientists say
3 years, 10 months ago

Supermassive black holes could be formed out of dark matter, scientists say

The Independent  

Sign up to our free weekly IndyTech newsletter delivered straight to your inbox Sign up to our free IndyTech newsletter Sign up to our free IndyTech newsletter SIGN UP I would like to be emailed about offers, events and updates from The Independent. Read our privacy policy Supermassive black holes could be formed out of dark matter, a new study has suggested. “This new formation scenario may offer a natural explanation for how supermassive black holes formed in the early Universe, without requiring prior star formation or needing to invoke seed black holes with unrealistic accretion rates,” said Carlos R Argüelles, from Universidad Nacional de La Plata, who led the research published in the Monthly Notices of the Royal Astronomical Society. That would leave behind smaller dwarf galaxies that do not have their own supermassive black hole, but instead a dark matter nucleus at their centre. Further research is required to understand for sure how such supermassive black holes could form, the researchers note.

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History of this topic

Rapidly growing black hole found, could provide clues on how massive galaxies first evolved
1 year, 10 months ago

Rapidly growing black hole found, could provide clues on how massive galaxies first evolved

The Hindu  

Astronomers have discovered a rapidly growing black hole in one of the most extreme galaxies known in the very early Universe, according to a new study. Using observations taken with the Atacama Large Millimeter Array, a radio observatory sited in Chile, the team have determined that the galaxy, named COS-87259, containing this new supermassive black hole is very extreme, forming …

Rapidly growing black hole found, could provide clues on how massive galaxies first evolved: Study
1 year, 10 months ago

Rapidly growing black hole found, could provide clues on how massive galaxies first evolved: Study

India Today  

Astronomers have discovered a rapidly growing black hole in one of the most extreme galaxies known in the very early Universe, according to a new study. Using observations taken with the Atacama Large Millimeter Array, a radio observatory sited in Chile, the team have determined that the galaxy, named COS-87259, containing this new supermassive black hole is very extreme, forming …

Explained: What are supermassive black holes, the one which was photographed at the centre of The Milky Way
2 years, 7 months ago

Explained: What are supermassive black holes, the one which was photographed at the centre of The Milky Way

Firstpost  

Astronomers have captured the image of Sagittarius A*, the black hole at the centre of the Milky Way for the first time. Stellar black holes grow by taking control of other stars or merging with other black holes and becoming a supermassive black hole. A supermassive black hole can have masses equal to billions of suns, so the one that …

Nasa finds black hole giving birth to stars
2 years, 11 months ago

Nasa finds black hole giving birth to stars

The Independent  

Sign up to our free weekly IndyTech newsletter delivered straight to your inbox Sign up to our free IndyTech newsletter Sign up to our free IndyTech newsletter SIGN UP I would like to be emailed about offers, events and updates from The Independent. Nasa’s Hubble Space Telescope spotted one such black hole in the galaxy known as Henize 2-10, which …

Vast 'halo' of dark matter found around galaxy
3 years, 11 months ago

Vast 'halo' of dark matter found around galaxy

The Independent  

Sign up to our free weekly IndyTech newsletter delivered straight to your inbox Sign up to our free IndyTech newsletter Sign up to our free IndyTech newsletter SIGN UP I would like to be emailed about offers, events and updates from The Independent. Read our privacy policy A dwarf galaxy near the Milky Way has a vast halo of dark …

Oldest quasar and supermassive black hole discovered in the distant universe
3 years, 11 months ago

Oldest quasar and supermassive black hole discovered in the distant universe

CNN  

CNN — The most distant quasar and the earliest known supermassive black hole have been discovered, shedding light on how massive galaxies formed in the early universe. This quasar is a thousand times more luminous than our Milky Way galaxy, and it’s powered by the earliest known supermassive black hole. “This is the earliest evidence of how a supermassive black …

Is Dark Matter Just Black Holes Made During the Big Bang?
4 years, 3 months ago

Is Dark Matter Just Black Holes Made During the Big Bang?

Wired  

Advocates of the primordial black hole hypothesis still have a lot of convincing to do. “There are things that are weird about some of the LIGO sources, but we can explain everything that we’ve seen so far through normal stellar evolutionary process.” Selma de Mink, an astrophysicist at Harvard University who has sketched out theories for how stars alone can …

Cosmic mash-up reveals a type of black hole scientists have never observed before
4 years, 4 months ago

Cosmic mash-up reveals a type of black hole scientists have never observed before

LA Times  

Black holes are getting stranger — even to astronomers. Star collapses couldn’t create stellar black holes much bigger than 70 times the mass of our sun, scientists thought, according to physicist Nelson Christensen, research director of the French National Centre for Scientific Research. Black hole collisions have been observed before, but the black holes involved were smaller to begin with …

Massive black holes found in some of the smallest galaxies
5 years ago

Massive black holes found in some of the smallest galaxies

India Today  

Astronomers have discovered some of the smallest galaxies known to host massive black holes; findings which may reveal how such regions of space exhibiting ultrahigh gravitational force -- that even light cannot escape from -- formed in the early universe. The study, published in the Astrophysical Journal, found 13 massive black holes, about 4,00,000 times as heavy as the Sun, …

Dark matter existed in the universe even before the Big Bang, new research suggests
5 years, 5 months ago

Dark matter existed in the universe even before the Big Bang, new research suggests

Firstpost  

The study also proposes a test for the origin of dark matter by looking at the distribution of matter in the universe. A new mathematics study suggests that dark matter has been in the universe before the Big Bang. “If dark matter consists of new particles that were born before the Big Bang, they affect the way galaxies are distributed …

Scientists unveil first image ever made of a black hole
5 years, 9 months ago

Scientists unveil first image ever made of a black hole

Live Mint  

Brussels: Scientists have revealed the first-ever glimpse of a super-massive black hole today, as the Event Horizon Telescope released the first results of its findings, in a ‘ground-breaking’ discovery that proved Albert Einstein’s theory of general relativity. The collaboration of scientists reveals what is called the “event horizon,” the boundary at the edge of a black hole where the gravitational …

83 supermassive black holes found in early universe
5 years, 9 months ago

83 supermassive black holes found in early universe

India TV News  

Astronomers have discovered 83 quasars powered by supermassive black holes 13 billion light-years away from the Earth, from a time when the universe was less than 10 per cent of its present age. "Understanding how black holes can form in the early universe, and just how common they are, is a challenge for our cosmological models," Strauss said in a …

These are the first massive black holes from the early universe
5 years, 11 months ago

These are the first massive black holes from the early universe

CNN  

CNN — More than 13 billion years after they formed, distant massive black holes from the early universe are revealing themselves. “In this study, we have uncovered a totally new mechanism that sparks the formation of massive black holes, in particular dark matter halos,” Wise said. “The dark matter creates most of the gravity, and then the gas falls into …

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