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Two record-breaking black holes found nearby, space radiation - T Pyxidis

 
Rain-Man
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12/06/2011 01:20 PM
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Two record-breaking black holes found nearby, space radiation - T Pyxidis
Gemini Observatory Press Release

Observations with the Gemini North telescope in Hawaii reveal evidence for what astronomers are calling the largest black holes ever measured in our nearby cosmological neighborhood. This result is crucial in explaining the long-standing mystery of where the largest black holes are hiding in our present-day universe.

Supermassive black holes appear to have existed when the universe was young. Evidence for this comes from quasars extremely bright objects thought to have played host to massive black holes in the early universe.

"They couldn't just go away," said Nicholas McConnell from the University of California at Berkeley. "So where are these black holes hiding now?"


[link to www.gemini.edu]
[link to vimeo.com]

Last Edited by Account Deleted by User on 08/02/2012 08:38 AM
Rain-Man  (OP)

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Re: Two record-breaking black holes found nearby, space radiation - T Pyxidis
bump

Black Holes - BBC Horizon (HD)



Last Edited by Rain-Man on 12/08/2011 07:34 AM
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Re: Two record-breaking black holes found nearby, space radiation - T Pyxidis
Thread: ************* BLAZAR IS COMING!!!!!!!!*********%[email protected]%@%@%**************************8
Rain-Man  (OP)

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12/06/2011 10:51 PM
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Re: Two record-breaking black holes found nearby, space radiation - T Pyxidis
This is one of the most AMAZING Voyage in the UNIVERSE.

Watch all parts.
1/7




Andromeda is the nearest spiral galaxy to the Milky Way.

Andromeda galaxy is getting closer to the Milky Way by about 120 km/s, there is no way to tell whether it is going to collide or miss.

[link to en.wikipedia.org]

The Canis Major Dwarf Galaxy is classified as an irregular galaxy and is now thought to be the closest neighbouring galaxy to our location in the Milky Way, being located about 25,000 light-years away from our Solar System[2] and 42,000 light-years from the Galactic Center

[link to en.wikipedia.org]



Last Edited by Rain-Man on 12/06/2011 10:54 PM
Rain-Man  (OP)

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Re: Two record-breaking black holes found nearby, space radiation - T Pyxidis
Two ten-billion-solar-mass black holes at the centres of giant elliptical galaxies

Nicholas J. McConnell (UC Berkeley), Chung-Pei Ma (UC Berkeley), Karl Gebhardt (UT Austin), Shelley A. Wright (UC Berkeley), Jeremy D. Murphy (UT Austin), Tod R. Lauer, (NOAO), James R. Graham (UC Berkeley and Dunlap Institute for Astronomy and Astrophysics), Douglas O. Richstone (UM Ann Arbor)
(Submitted on 5 Dec 2011)

Observational work conducted over the last few decades indicates that all massive galaxies have supermassive black holes at their centres. Although the luminosities and brightness fluctuations of quasars in the early Universe suggest that some are powered by black holes with masses greater than 10 billion solar masses, the remnants of these objects have not been found in the nearby Universe. The giant elliptical galaxy Messier 87 hosts the hitherto most massive known black hole, which has a mass of 6.3 billion solar masses. Here we report that NGC 3842, the brightest galaxy in a cluster at a distance from Earth of 98 megaparsecs, has a central black hole with a mass of 9.7 billion solar masses, and that a black hole of comparable or greater mass is present in NGC 4889, the brightest galaxy in the Coma cluster (at a distance of 103 megaparsecs). These two black holes are significantly more massive than predicted by linearly extrapolating the widely-used correlations between black hole mass and the stellar velocity dispersion or bulge luminosity of the host galaxy. Although these correlations remain useful for predicting black hole masses in less massive elliptical galaxies, our measurements suggest that different evolutionary processes influence the growth of the largest galaxies and their black holes.

Full info here, PDF
[link to arxiv.org]

[link to arxiv.org]

Last Edited by Rain-Man on 12/08/2011 07:29 AM





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