Astronomers find wandering massive black holes in dwarf galaxies

Astronomers seeking to learn about the mechanisms that formed massive black holes in the early history of the Universe have gained important new clues with the discovery of 13 such black holes in dwarf galaxies less than a billion light-years from Earth. These dwarf galaxies, more than 100 times less massive than our own Milky … Read more Astronomers find wandering massive black holes in dwarf galaxies

New link found between mass of Supermassive black holes and their host galaxies

A team of astronomers has discovered a novel way to “weigh” supermassive black holes at the centres of galaxies by measuring the distances between the galaxies that contain them. Mysterious, massive dark objects lurk at the centre of nearly all galaxies and can be observed with high enough sensitivity. Astronomers believe these to be black … Read more New link found between mass of Supermassive black holes and their host galaxies

ESO observations reveal black holes’ breakfast at the cosmic dawn

Astronomers using ESO’s Very Large Telescope have observed reservoirs of cool gas around some of the earliest galaxies in the Universe. These gas halos are the perfect food for supermassive black holes at the centre of these galaxies, which are now seen as they were over 12.5 billion years ago. This food storage might explain … Read more ESO observations reveal black holes’ breakfast at the cosmic dawn

Chinese Academy of Sciences leads discovery of unpredicted stellar black hole

Our Milky Way Galaxy is estimated to contain 100 million stellar black holes – cosmic bodies formed by the collapse of massive stars and so dense even light can’t escape. Until now, scientists had estimated the mass of an individual stellar black hole in our Galaxy at no more than 20 times that of the … Read more Chinese Academy of Sciences leads discovery of unpredicted stellar black hole

How to observe a ‘black hole symphony’ using gravitational wave astronomy

Shrouded in mystery since their discovery, the phenomenon of black holes continues to be one of the most mind-boggling enigmas in our universe. In recent years, many researchers have made strides in understanding black holes using observational astronomy and an emerging field known as gravitational wave astronomy, first hypothesized by Albert Einstein, which directly measures … Read more How to observe a ‘black hole symphony’ using gravitational wave astronomy

Milky Way’s big black hole hurls star to infinity and beyond

An international study has discovered a star travelling at more than six million km/h through the Milky Way after being flung from the centre of our galaxy by a supermassive black hole. The eviction occurred about five million years ago, around the time when our ancestors were just learning to walk upright. Emeritus Professor Gary … Read more Milky Way’s big black hole hurls star to infinity and beyond

Scientists may have discovered whole new class of black holes

Black holes are an important part of how astrophysicists make sense of the universe – so important that scientists have been trying to build a census of all the black holes in the Milky Way galaxy. But new research shows that their search might have been missing an entire class of black holes that they … Read more Scientists may have discovered whole new class of black holes

Researchers apply the squeeze to better detect stellar-mass black holes

Stellar-mass black holes are formed by the gravitational collapse of a star. Their collisions are some of the most violent events in the universe, creating gravitational waves or ripples in space-time. These ripples are miniscule and detected using laser interferometers. Until now, many signals have been drowned out by so-called quantum noise on the laser … Read more Researchers apply the squeeze to better detect stellar-mass black holes

Not long ago, the center of the Milky Way exploded

A titanic, expanding beam of energy sprang from close to the supermassive black hole in the centre of the Milky Way just 3.5 million years ago, sending a cone-shaped burst of radiation through both poles of the Galaxy and out into deep space. That’s the finding arising from research conducted by a team of scientists … Read more Not long ago, the center of the Milky Way exploded

Massive filaments fuel the growth of galaxies and supermassive black holes

An international group of scientists led by the RIKEN Cluster for Pioneering Research have used observations from the Multi Unit Spectroscopic Explorer (MUSE) at the ESO Very Large Telescope (VLT) in Chile and the Suprime-Cam at the Subaru telescope to make detailed observations of the filaments of gas connecting galaxies in a large, distant proto-cluster … Read more Massive filaments fuel the growth of galaxies and supermassive black holes