The Ashes

Technology, Science and other news
August 10, 2009

New Class of Black Holes Discovered

Posted by : admin
Filed under : General

Only two sizes of black holes have ever been spotted: small and super-massive. Scientists have long speculated that an intermediate version must exist, but they’ve never been able to find one until now.

Astrophysicists identified what appears to be the first-ever medium-sized black hole, pictured in an artist’s rendition above, with a mass at least 500 times that of our Sun. Researchers from the Centre d’Etude Spatiale des Rayonnements in France detected the middling hole in a galaxy about 290 million light-years from Earth.

The discovery may shed some light on the origins of super-sized black holes like the one at the center of our own galaxy. These astral heavyweights top out at several million to several billion times the mass of the Sun, but their origin remains a mystery.

Small black holes, between three and 20 times the mass of the sun, are created when big stars collapse and leave behind a gravitational pull strong enough to block nearby light rays. Researchers have speculated that super-massive black holes result from the successive fusion of many smaller black holes. But without finding evidence of a medium-size hole, it was a tough theory to prove.

“The existence of such intermediate-mass black holes is in dispute,” the French scientists wrote Wednesday in Nature, “and though many candidates have been proposed, none are widely accepted as definitive.”

The new discovery is the most convincing evidence to date that medium black holes exist. Using the European Space Agency’s XMM-Newton X-ray space telescope, the researchers identified a radiation source that gives off X-rays 260 million times brighter than the radiation of the Sun.

Called “Hyper-Luminous X-ray Source 1,” the structure sits on the edge of galaxy ESO 243-49. Because of the source’s physical characteristics and the pattern of its radiation, the researchers conclude it must be a black hole more than 500 times the mass of the sun: not too big, not too small, and the first of its kind.

Tags :

No Comments

(required)
(will not be published) (required)
(opitional)

cciash.com EN ES IT DE PT CZ FR RU
December 2017
M T W T F S S
« Sep    
 123
45678910
11121314151617
18192021222324
25262728293031

Pages

Categories

Resources

There are many online poker site where you can play but at poker.hk you can play the poker games with all the knowledge you need related to the game with the poker school available in both the English and Chinese language.

Super Casino

Now you can bet on any sports and any sporting events from all the comfort from your home. Bet770 allows you to bet on any events and match with in just 3 clicks. They also offers great odds on football betting for every premier and champions league match. Get £50 free in bets when you register.

Bingo770, offering best online bingo games with £7.70 free no deposit Bonus!