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Latest Supermassive black holes Stories

Chandra And XMM-Newton Show Direct Measurement Of Distant Black Hole's Spin
2014-03-06 08:15:43

[ Watch the Video: Measuring a Distant Black Hole's Spin ] NASA Astronomers have used NASA's Chandra X-ray Observatory and the European Space Agency's (ESA's) XMM-Newton to show a supermassive black hole six billion light years from Earth is spinning extremely rapidly. This first direct measurement of the spin of such a distant black hole is an important advance for understanding how black holes grow over time. Black holes are defined by just two simple characteristics: mass and...

2014-03-05 12:21:30

WASHINGTON, March 5, 2014 /PRNewswire-USNewswire/ -- Astronomers have used NASA's Chandra X-ray Observatory and the European Space Agency's (ESA's) XMM-Newton to show a supermassive black hole six billion light years from Earth is spinning extremely rapidly. This first direct measurement of the spin of such a distant black hole is an important advance for understanding how black holes grow over time. http://photos.prnewswire.com/prnvar/20081007/38461LOGO Black holes are defined by...

Red Dead Redemption: Black Holes Bully Galaxies Into Submission
2014-02-26 15:13:15

Brett Smith for redOrbit.com - Your Universe Online Typically filled with only the oldest stars, which are relatively low in mass and appear red, giant elliptical galaxies have long baffled astronomers. These galaxies are mysteriously shut down with respect to star-forming activity – a status scientists refer to as “red and dead.” These galaxies are thought to be low on cold gas, an important raw material for star forming, but a new study in the Monthly Notices of the Royal...

NASA Satellite Discovers Cloudy Conditions Around Black Holes
2014-02-19 13:27:43

[ Watch the Video: The Cloudy Cores of Active Galaxies ] Lee Rannals for redOrbit.com - Your Universe Online An international team of astronomers used NASA’s Rossi X-ray Timing Explorer (RXTE) satellite data and found huge clouds of gas orbiting supermassive black holes. Scientists collected 16 years of data from RXTE, a decommissioned low-earth orbit satellite that was equipped with instruments that measured variations in X-ray sources. This treasure trove of data revealed a dozen...

Computer Simulations Reveal The Destruction Of A Star As It Falls Into A Black Hole
2014-02-19 05:24:10

April Flowers for redOrbit.com - Your Universe Online Exploring the universe's most violent events using computer simulations is what Enrico Ramirez-Ruiz does. So in 2012, when the first detailed observations of a star being ripped apart by a black hole were reported in Nature, Ramirez-Ruiz was eager to compare the data to his simulations. This was especially true because he doubted one of the published conclusions: that the disrupted star was a rare helium star. "I was sure it was a...

New Look At Old Galactic Friend
2014-02-07 09:05:06

NASA Just weeks after NASA’s Chandra X-ray Observatory began operations in 1999, the telescope pointed at Centaurus A (Cen A, for short). This galaxy, at a distance of about 12 million light years from Earth, contains a gargantuan jet blasting away from a central supermassive black hole. Since then, Chandra has returned its attention to this galaxy, each time gathering more data. And, like an old family photo that has been digitally restored, new processing techniques are providing...

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...

Hypervelocity Stars Escape Galaxy
2014-01-10 08:44:12

April Flowers for redOrbit.com - Your Universe Online A surprising new class of hypervelocity stars has been discovered by an international team of astronomers. These solitary stars are moving fast enough to escape the gravitational grasp of the Milky Way galaxy, according to a study presented at the annual meeting of the American Astronomical Society. The findings were also published in the Astrophysical Journal. "These new hypervelocity stars are very different from the ones that...

Swift Sees X-ray Action In Milky Way's Center
2014-01-09 06:14:19

[ Watch the Video: Swift Sees Changes in the Milky Way 2006 – 2013 ] Lee Rannals for redOrbit.com - Your Universe Online Scientists have discovered a rare celestial entity that could help test predictions of Albert Einstein’s theory of general relativity. A team at the annual meeting of the American Astronomical Society in National Harbor, Maryland, explained how images obtained through NASA’s Swift spacecraft could help decipher the physical nature of X-ray flares and enable...

Abell 1795
2014-01-09 04:13:33

[ Watch the Video: A Tour of Galaxy Cluster Abell 1795 ] Lee Rannals for redOrbit.com - Your Universe Online NASA’s Chandra X-ray Observatory has helped astronomers witness the first event of a black hole destroying a star in a dwarf galaxy. Two independent studies using data from Chandra and other telescopes have led scientists to believe they have found what appears to be a star being consumed by a black hole. “We can’t see the star being torn apart by the black hole,”...


Latest Supermassive black holes Reference Libraries

6_8304cd2002012eb0093845e374a1b9612
2004-10-19 04:45:42

Supermassive Black Hole -- A Supermassive black hole is a black hole with a mass in the range of millions or billions solar masses. A supermassive black hole has some interesting properties differing from his low-mass cousins: -- The average density of a supermassive black hole can be very low, and actually can be lower than water's density. This happens because the black hole diameter increases linearly with mass, and consequently density drops much faster. -- Strong tidal...

6_c7a74d948ad4cfdc1dd54ceada2509fb2
2004-10-19 04:45:42

Seyfert Galaxy -- Seyfert galaxies are spiral or irregular galaxies containing an extremely bright nucleus, most likely caused by a supermassive black hole, that can sometimes outshine the surrounding galaxy. The light from the central nucleus varies in less than a year, which implies that the emitting region must be less than one light year across. They are named for the astronomer Carl Seyfert, who studied them extensively in the 1940s. They are a subclass of active galactic nuclei....

6_0ba47eab12382e6a4e2cc12b1c7ddf782
2004-10-19 04:45:42

Quasar -- A quasar (from quasi-stellar radio source) is an astronomical object that looks like a star in optical telescopes (i.e. it is a point source), but has a very high redshift. The general consensus is that this high redshift is cosmological, the result of Hubble's law and that their redshift indicates that they are typically very distant from Earth; we observe them as they were several billions of years ago. Since we can see them despite their distance, they must emit more...

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Word of the Day
lambent
  • Licking.
  • Hence Running along or over a surface, as if in the act of licking; flowing over or along; lapping or bathing; softly bright; gleaming.
This word comes the Latin 'lambere,' to lick.
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