Latest Arp 220 Stories

Active Supermassive Black Holes Discovered In Two Merging Galaxies
2014-01-28 13:17:31

[ Watch the Video: Galaxy Mergers And Supermassive Black Holes ] Lee Rannals for redOrbit.com - Your Universe Online Astronomers publishing a paper in the Astrophysical Journal say they have found two merging galaxies have active supermassive black holes. The team conducted infrared observations of the merging galaxies by using the Subaru Telescope. They found that at least one of the supermassive black holes almost always becomes active and luminous by accreting a large amount of...

Hubble Provides Evidence That Galaxies Do Not Confine Starbursts
2013-04-25 08:22:14

WATCH VIDEOS: [Animation of a Starburst Galaxy] | [Probing a Galactic Halo] Lee Rannals for redOrbit.com — Your Universe Online Astronomers writing in The Astrophysical Journal say they've observed how bursts of star formation have a major impact beyond the boundaries of their host galaxy. When galaxies form new stars, they can create frantic episodes of activity known as starbursts. Scientists using the Hubble Space Telescope say these events can affect galactic gas at...

New SCUBA-2 Camera Reveals Wild Youth Of The Universe
2012-03-27 08:14:50

A team of astronomers from the UK, Canada and the Netherlands have commenced a revolutionary new study of cosmic star-formation history, looking back in time to when the universe was still in its lively and somewhat unruly youth! The consortium, co-led by University of Edinburgh astrophysicist Professor James Dunlop, is using a brand new camera called SCUBA-2, the most powerful camera ever developed for observing light at "sub-mm" wavelengths (light that has a wavelength 1000 times longer...

The Star Factory: Observing Arp 220
2012-02-20 04:07:11

The galaxy Arp 220 is home to several giant star clusters–about 10 million solar masses–that are twice as massive as any comparable star cluster in the Milky Way Galaxy. McMaster University's Christine Wilson is captivated by this turbulent galaxy that provides such a target-rich environment for watching stars form. The reason that star formation is going wild is that the galaxy is in the late stages of a merger between two larger galaxies. "This is a nearby look at a...

2011-06-11 07:05:00

A study using NASA's Swift satellite and the Chandra X-ray Observatory has found a second supersized black hole at the heart of an unusual nearby galaxy already known to be sporting one. The galaxy, which is known as Markarian 739 or NGC 3758, lies 425 million light-years away toward the constellation Leo. Only about 11,000 light-years separate the two cores, each of which contains a black hole gorging on infalling gas. The study will appear in a forthcoming issue of The Astrophysical Journal...

2010-12-20 14:57:21

A new study from NASA's Chandra X-ray Observatory tells scientists how often the biggest black holes have been active over the last few billion years. The object could help scientists better understand how massive stars explode, which ones leave behind black holes or neutron stars, and how many black holes are in our galaxy and others. This discovery clarifies how supermassive black holes grow and could have implications for how the giant black hole at the center of the Milky Way will behave...

2010-07-01 06:20:00

Evidence for a recoiling black hole has been found using data from the Chandra X-ray Observatory, XMM-Newton, the Hubble Space Telescope (HST), and several ground-based telescopes. This black hole kickback was caused either by a slingshot effect produced in a triple black hole system, or from the effects of gravitational waves produced after two supermassive black holes merged a few million years earlier. The discovery of this object, located in this composite image, comes from a large,...

2010-05-26 12:50:00

Data from an ongoing survey by NASA's Swift satellite have helped astronomers solve a decades-long mystery about why a small percentage of black holes emit vast amounts of energy. Only about one percent of supermassive black holes exhibit this behavior. The new findings confirm that black holes "light up" when galaxies collide, and the data may offer insight into the future behavior of the black hole in our own Milky Way galaxy. The study will appear in the June 20 issue of The Astrophysical...

2009-05-27 15:51:07

The European Space Agency says data from its XMM-Newton space observatory has allowed astronomers to closely study a supermassive black hole. The black hole is located at the core of a distant active galaxy known as 1H0707-495. It was observed during four 48-hour-long orbits of XMM-Newton around Earth, starting in January 2008. We can now start to map out the region immediately around the black hole, said Andrew Fabian of the University of Cambridge, who led the observations and analysis....

2009-01-22 09:51:30

A team of Yale University astronomers has discovered that galaxies stop forming stars long before their central supermassive black holes reach their most powerful stage, meaning the black holes can't be responsible for shutting down star formation. Until recently, astronomers believed that active galactic nuclei (AGN)"”the supermassive, extremely energetic black holes at the centers of many young galaxies"”were responsible for shutting down star formation in their host galaxies...

Word of the Day
  • The navel or umbilicus.
  • In Greek archaeology: A central boss, as on a shield, a bowl, etc.
  • A sacred stone in the temple of Apollo at Delphi, believed by the Greeks to mark the 'navel' or exact center-point of the earth.
'Omphalos' comes from the ancient Greek.