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Surprise! Black hole with accretion disk that should not exist



Astronomers have discovered in a very weak galaxy a thin slice of material that spirals into a supermassive black hole – an unexpected finding that may provide additional clues to the dynamic processes around black holes.

Astronomers used the Hubble Space Telescope to observe the black hole in the center of the spiral galaxy NGC 3147, which is located in the Draco constellation at a distance of approximately 130 million light-years. Black holes in low-luminosity galaxies such as NGC 3147 usually lack sufficient material captured by galaxy gravity to feed on Hubble scientists. We were surprised to find a thin slice of black hole in the black hole The center of this galaxy surrounds the disk as it resembles the types of accretion disks that typically surround black holes found in extremely active (and much brighter) galaxies.

See also: Pictures: Black Holes of the Universe

<img alt = "This Hubble Space Telescope image of the spiral galaxy NGC 31

47 (left) is shown alongside the illustration of an artist of the supermassive black hole, the is located in the nucleus of the galaxy. [19659007] This Hubble Space Telescope image of the spiral galaxy NGC 3147 (left) can be seen alongside the illustration of an artist from the supermassive black hole located in the nucleus of the galaxy.

Hubble Image: NASA, ESA, S. Bianchi (University of Rome), A. Laor (Technion-Israel Institute of Technology) and M. Chiaberge (ESA, STScI and JHU); Illustration: NASA, ESA and A. Feild and L. Hustak (STScI).

"The volume type is a scaled-down quasar [a luminous galactic nucleus] that we did not expect." Stefano Bianchi, Professor of Astrophysics at Roma Tre University in Italy and lead author of the study, said in the Erk lärung. "It's the same type of glass we see on objects that are 1,000 or even 100,000 times brighter."

According to the study, the disk is so deeply embedded in the gravitational field of the black hole that the light from the gas disk is altered by the strong attraction. Hubble measured how the disk rotated around the black hole at more than 10% of the speed of light causing it to lighten as it moved toward the earth and darkened as it moved away from ours Planet removed.

This process is called relativistic rays, where relative effects change the luminosity of matter moving at speeds close to the speed of light.

"This is a fascinating view of a disc near a black hole," said Bianchi. "So close that the speed and the intensity of the force of attraction affect how we see the photons of light."

<img alt = "An artistic representation of the accretion disk around the supermassive black hole in the core of the spiral galaxy NGC 3147. [19659015] An artistic representation of the accretion disk around the supermassive black hole in the core of the spiral galaxy NGC 3147.

(Photo credits : ESA / Hubble, M. Kornmesser)

With these observations, scientists can test Albert Einstein's theories of relativity which explain how gravity can distort light when the light coming from the center of this disk appears distorted resulting distorted images we see could provide unique insights into the behavior of light and matter near a black hole.

The team behind the study had originally selected this galaxy to detect well-known models of active galaxies To validate luminosity and starving black holes in the center.But NGC 3147 has resisted these models, and now scientists are looking for other similar accretion disks that surround these "malnourished" black holes in dimly lit galaxies.

"The predictions of current models for very weak active galaxies have clearly failed," said Bianchi.

The new publication was published online on July 11 in the Monthly Notices of the Royal Astronomical Society ] Follow Passant Rabie on Twitter @passantrabie. Follow us on Twitter @SpaceTotcom and Facebook .


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