130 million light-years away, the Hubble Space Telescope finds a very unusual black hole.
Astronomers using the Hubble Space Telescope have discovered a supermassive black hole 130 million light-years from Earth that scientists say “shouldn’t exist,” and defies current theoretical models about the universe.
An international team of scientists, who published their findings in the Monthly Notices of the Royal Astronomical Society, observed an “unexpected” monster black hole at the heart of NGC 3147, a spiral galaxy located at a relatively close distance of about 130 million light-years in the far northern constellation Draco the Dragon.
The problem, the space agency explains, is that according to current astronomical theories, this type of black hole shouldn’t exist but it does – making the behemoth, mysterious cosmic phenomena even more intriguing.
“We’ve never seen the effects of both general and special relativity in visible light with this much clarity,” said Marco Chiaberge, a member of the team that conducted the Hubble study.
Scientists found that there is an accretion disk – a disk-like flow of gas, dust and stellar debris – encircling it at 10 per cent the speed of light, but it shouldn’t be there, according to the existing models for such structures.
Scientists explain that the black hole – which is some 250 million times heavier that the sun – is said to be malnourished and fairly dim, and the accretion disk feeding stellar material into it was expected to be thick.
That disk shouldn’t be there.
The top-down view of an artist’s impression of the peculiar thin disc of material circling a supermassive black hole at the heart of the spiral galaxy NGC 3147, located 130 million light-years away.
“The type of disk we see is a scaled-down quasar that we did not expect to exist,” explained Stefano Bianchi of Università degli Studi Roma Tre. “It’s the same type of disk we see in objects that are 1,000 or even 100,000 times more luminous. The predictions of current models for gas dynamics in very faint active galaxies clearly failed.”
“We thought this was the best candidate to confirm that below certain luminosities, the accretion disk doesn’t exist anymore,” said Ari Laor of the Haifa-based Technion-Israel Institute of Technology. “What we saw was something completely unexpected. We found gas in motion producing features we can explain only as being produced by material rotating in a thin disk very close to the black hole.”
Researchers say by observing the disk through blocking out starlight they were able to better study processes happening close to the black hole’s edge. The team said they plan to study more galaxies with the Hubble Space Telescope in the future to find similar disks of material.
Cover image: Nasa/ ESA