sábado, 26 de março de 2011

Science Daily

A Black Hole found in binary star system: More than five times greater in mass than our Sun.

ScienceDaily (2011-03-25) -- The Gran Telescopio Canarias (GTC) has obtained the first spectroscopy data from the X-ray transient binary XTE J1859+226, which confirm the existence of a black hole.

Only about 20 binary stellar systems are known to contain a black hole, out of an estimated population of around 5,000 in the Milky Way Galaxy.

http://www.sciencedaily.com/releases/2011/03/110325082725.htm%22%3Eread full article

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