News tagged with black hole accretion

Could the Milky Way become a quasar?

A quasar is what you get when a supermassive black hole is actively feeding on material at the core of a galaxy. The region around the black hole gets really hot and blasts out radiation that we can see billions ...

dateFeb 27, 2015 in Astronomy
shares412 comments 7

Global telescope array links successfully with GBT

For the first time, the National Science Foundation's Green Bank Telescope (GBT) was successfully linked with a network of millimeter-wavelength telescopes, giving a powerful boost to an observatory known as the Global Millimeter ...

dateMay 09, 2014 in Astronomy
shares0 comments 0

A link between black holes and new stars

Supermassive black holes (those with millions to billions of solar-masses) are thought to reside at the centers of most galaxies. These black holes must have undergone periods of intense accretion activity ...

dateOct 23, 2013 in Astronomy
shares0 comments 5

Galaxy winds

(Phys.org) —The most luminous galaxies in our universe are not particularly bright in the visible. Most of their energy output (which can be hundreds or even thousands of times more than our Milky Way's) ...

dateSep 23, 2013 in Astronomy
shares0 comments 1

The largest magnetic fields in the universe

An ultradense ("hypermassive") neutron star is formed when two neutron stars in a binary system finally merge. Its short life ends with the catastrophic collapse to a black hole, possibly powering a short ...

dateJul 26, 2013 in Astronomy
shares0 comments 27

Black hole naps amidst stellar chaos

(Phys.org) —Nearly a decade ago, NASA's Chandra X-ray Observatory caught signs of what appeared to be a black hole snacking on gas at the middle of the nearby Sculptor galaxy. Now, NASA's Nuclear Spectroscopic ...

dateJun 11, 2013 in Astronomy
shares0 comments 0