Next step towards a gravitational-wave observatory in space
2 hours ago
Today, ESA has invited European scientists to propose concepts for the third large mission in its science programme, to study the gravitational Universe.
VLT detects unexpected giant glowing halos around distant quasars
3 hours ago
An international collaboration of astronomers, led by a group at the Swiss Federal Institute of Technology (ETH) in Zurich, Switzerland, has used the unrivalled observing power of MUSE on the Very Large Telescope (VLT) at ...
Hotspots in an active galactic nucleus
Oct 24, 2016
The nucleus of a so-called "active" galaxy contains a massive black hole that is vigorously accreting material. As a result, the nucleus often ejects bipolar jets of rapidly moving charged particles that radiate brightly ...
NGC 5128: Mysterious cosmic objects erupting in X-rays discovered
Oct 19, 2016
This image shows the location of a remarkable source that dramatically flares in X-rays unlike any ever seen. Along with another similar source found in a different galaxy, these objects may represent an entirely new phenomenon, ...
Did LIGO detect black holes or gravastars?
Oct 19, 2016
After the first direct detection of gravitational waves that was announced last February by the LIGO Scientific Collaboration and made news all over the world, Luciano Rezzolla (Goethe University Frankfurt, Germany) and Cecilia ...
X-ray point source discovered at the center of a distant dwarf galaxy Henize 2-10
Oct 19, 2016 report
(Phys.org)—NASA's Chandra X-ray Observatory has helped astronomers to uncover a previously unidentified X-ray point source at the massive black hole in the center of a distant compact starburst galaxy known as Henize 2-10. ...
Dense molecular gas disks drive the growth of supermassive black holes—Are supernova explosions the key?
Oct 13, 2016
A joint team of University of Tokyo researchers and their collaborators, using ALMA and other telescopes that utilize radio waves for space observation, revealed that dense molecular gas disks a few hundred light years in ...
Astronomers confirm remarkable size of the largest known depleted galaxy core
Oct 11, 2016
Investigating the millions of missing stars from the centres – or cores – of two big galaxies, astronomers at Swinburne University of Technology say they may have solved this cosmic whodunit, and the main culprits are ...
X-ray telescopes find evidence for wandering black hole
Oct 05, 2016
Astronomers have used NASA's Chandra X-ray Observatory and ESA's XMM-Newton X-ray observatory to discover an extremely luminous, variable X-ray source located outside the center of its parent galaxy. This peculiar object ...
What happens when black holes collide?
Oct 05, 2016
The sign of a truly great scientific theory is by the outcomes it predicts when you run experiments or perform observations. And one of the greatest theories ever proposed was the concept of Relativity, described by Albert ...