Binary Black Holes

At the centre of two merging galaxies, two black holes have been observed devouring matter side by side, raising the possibility that binary black holes are more frequent than previously assumed.

Astronomers from Guangzhou University in China have used data from a range of X-ray observatories while covering a time period of 200 days. They tried to identify the high-energy signatures that are expected to be detected in a close supermassive black hole binary or a decaying orbit.

Astronomers have identified a black hole that not only is classified as dormant but appears to have been born without the explosion of a dying star, in a galaxy adjacent to the Milky Way. Black holes are extraordinarily dense objects with gravity so intense not even light can escape. Deemed a cosmic "needle in a haystack", the newly discovered ‘d...

Black holes are intriguing and mysterious objects. They are dreaded, too, because their gravitational pull is so strong that they do not allow anything to pass through them, not even light, except on the rare occasions when they feed. When a black hole pulls in gas and dust from an orbiting star, it sends out spectacular bursts of X-ray that bounce...

Astrophysicists say that the newly observed phenomena will allow them to better understand the formation of binary star systems and how often they merge, something that has never been measured before.

India's AstroSat and NASA's Chandra X-Ray Observatory have found that a black hole in the binary star system 4U 1630-47 spins close to the maximum possible rate.

Scientists using data from India's first dedicated astronomy satellite, AstroSat, and NASA's Chandra X-ray Observatory have found that a black hole in the binary star system 4U 1630-47 spins close to the maximum possible rate.

Scientists have discovered the first binary system ever known to consist of a black hole and a 'spinning' star.

At the centre of two merging galaxies, two black holes have been observed devouring matter side by side, raising the possibility that binary black holes are more frequent than previously assumed.

Astronomers from Guangzhou University in China have used data from a range of X-ray observatories while covering a time period of 200 days. They tried to identify the high-energy signatures that are expected to be detected in a close supermassive black hole binary or a decaying orbit.

Astronomers have identified a black hole that not only is classified as dormant but appears to have been born without the explosion of a dying star, in a galaxy adjacent to the Milky Way. Black holes are extraordinarily dense objects with gravity so intense not even light can escape. Deemed a cosmic "needle in a haystack", the newly discovered ‘d...

Black holes are intriguing and mysterious objects. They are dreaded, too, because their gravitational pull is so strong that they do not allow anything to pass through them, not even light, except on the rare occasions when they feed. When a black hole pulls in gas and dust from an orbiting star, it sends out spectacular bursts of X-ray that bounce...

Astrophysicists say that the newly observed phenomena will allow them to better understand the formation of binary star systems and how often they merge, something that has never been measured before.

India's AstroSat and NASA's Chandra X-Ray Observatory have found that a black hole in the binary star system 4U 1630-47 spins close to the maximum possible rate.

Scientists using data from India's first dedicated astronomy satellite, AstroSat, and NASA's Chandra X-ray Observatory have found that a black hole in the binary star system 4U 1630-47 spins close to the maximum possible rate.

Scientists have discovered the first binary system ever known to consist of a black hole and a 'spinning' star.