Astronomy
- Hubble Witnesses Flaring In Jet From Black Hole
A flare-up in a jet of matter blasting from a monster black hole is giving astronomers an incredible light show. The outburst is coming from a blob of matter, called HST-1, embedded in the jet, a powerful narrow beam of hot gas produced by a supermassive...
- A Supermassive Black Hole In A Dwarf Galaxy
A supermassive black hole exists in the center of our galaxy, with an incredible mass on the order of 4 million times that of the Sun. Our galaxy is not alone; most large galaxies also possess very large black holes as well. This leads to some interesting...
- Mysterious Object G2 May Have Increased The Feeding Rate Of Milky Way's Center Black Hole.
A recent close passage of a mysterious dusty object called G2, may have increased the feeding rate of a supermassive black hole which, weighs slightly more than 4 million times the mass of Sun at the center our galaxy. This information...
- Study Reveals The Link Between Black Holes And Galaxy Merger
In a recent survey, scientists have found a clear link between the presence of super-massive black holes that power high-speed radio-signal emitting jets and the merger history of their host galaxies. It was also discovered that almost all of the...
- Nearest Black Hole(or Neutron Star)
According to NASA, astronomers, using Chandra X-ray observatory had almost found a youngest possible Black hole known to exist in our cosmic background, and they even said that it appears to be our nearest possible. The 30-year-old object provides a...
Astronomy
On the edge of a hungry black hole
Gas and dust equal to the mass of two Earths are being gobbled up every hour by a hungry black hole in a distant galaxy, according to a space telescope probing the Universe in X-rays that has peered closer to a black hole than ever before.
The European Space Agency?s orbiting XMM-Newton observatory studied the black hole in the core of an active galaxy known only as 1H0707-495. This particular galaxy is described as Seyfert 1 galaxy, which typically have bright centres emitting a broad range of hydrogen emission but narrow emission lines of heavier elements such as iron. Four out of five Seyfert galaxies are barred spirals. The bars funnel large amounts of gas into the core, which then feeds into a spiralling disc around the supermassive black hole located in the centre of the galaxy.
As the gas spins around the black hole, it heats up, producing X-rays that then illuminate clumps of matter in the disc. To get a better grasp of the size and distribution of material in this disc, astronomers used XMM-Newton to search for X-rays emitted by iron atoms. They chose iron because it has a distinctive signature that is affected by the spin of the black hole, the velocity at which the iron atoms are orbiting around the black hole, and the energy required to escape the black hole?s gravity. As such, they can tell us a lot about the characteristics of the black hole.
- Hubble Witnesses Flaring In Jet From Black Hole
A flare-up in a jet of matter blasting from a monster black hole is giving astronomers an incredible light show. The outburst is coming from a blob of matter, called HST-1, embedded in the jet, a powerful narrow beam of hot gas produced by a supermassive...
- A Supermassive Black Hole In A Dwarf Galaxy
A supermassive black hole exists in the center of our galaxy, with an incredible mass on the order of 4 million times that of the Sun. Our galaxy is not alone; most large galaxies also possess very large black holes as well. This leads to some interesting...
- Mysterious Object G2 May Have Increased The Feeding Rate Of Milky Way's Center Black Hole.
A recent close passage of a mysterious dusty object called G2, may have increased the feeding rate of a supermassive black hole which, weighs slightly more than 4 million times the mass of Sun at the center our galaxy. This information...
- Study Reveals The Link Between Black Holes And Galaxy Merger
In a recent survey, scientists have found a clear link between the presence of super-massive black holes that power high-speed radio-signal emitting jets and the merger history of their host galaxies. It was also discovered that almost all of the...
- Nearest Black Hole(or Neutron Star)
According to NASA, astronomers, using Chandra X-ray observatory had almost found a youngest possible Black hole known to exist in our cosmic background, and they even said that it appears to be our nearest possible. The 30-year-old object provides a...