Tagged: black hole

X-ray emissions disappeared and then came back again due to changes in the environment, a study suggests. A black hole might have reversed its magnetic field right before our eyes. The story begins with a galaxy known as 1ES 1927+654, which briefly ceased X-ray emissions...

For the first time ever, scientists have seen the light from behind a black hole. Black holes are regions in space-time where gravity’s pull is so powerful that not even light can escape its grasp. However, while light cannot escape a black hole, its extreme...

Keck Observatory and NSF’s NOIRLab both announced on January 12, 2021, that astronomers have located an object that sets a new record for being the most distant quasar and thus the most distant supermassive black hole. They said they’re seeing the quasar – labeled J0313-1806...

A massive maelstrom that raged in the universe’s youth could help scientists better understand how galaxies and their central black holes interact. Most, if not all, galaxies harbor a supermassive black hole at their core. Our own Milky Way has one, for example — a...

“These were not events where the black holes munched on the neutron stars like the Cookie Monster and flung bits and pieces about,” one physicist said. After more than four years of exploring a menagerie of cosmic happenings through gravitational waves, scientists have finally spotted...

At the dark hearts of galaxies like the Milky Way lie supermassive black holes, with millions or even billions of times the sun’s mass. Some of those supermassive black holes are what scientists call active galactic nuclei (AGN), which spew out copious amounts of radiation...

A recent article published in the Monthly Notices of the Royal Astronomical Society, led by Dr. Kostas Kouroumpatzakis, of the Institute of Astrophysics at the Foundation for Research and Technology, Hellas (IA-FORTH), and the University of Crete, provides new insights into the connection between the...

A long time ago, in two galaxies about 900 million light-years away, two black holes each gobbled up their neutron star companions, triggering gravitational waves that finally hit Earth in January 2020. Discovered by an international team of astrophysicists including Northwestern University researchers, two events—detected...

Palomar 5 is a unique star cluster. In a paper published today in Nature Astronomy, an international team of astrophysicists led by the University of Barcelona show that distinguishing features of Palomar 5 are likely the result of an oversized black hole population of more...

A team of researchers at the International Center for Relativistic Astrophysics has found evidence that suggests Sagittarius A* is not a massive black hole but is instead a mass of dark matter. In their paper published in the journal Monthly Notices of the Royal Astronomical...