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Saturday, May 12, 2012

The flow of black hole radiation prevents


An international team of scientists, with Spanish participation, has quantified the relationship between star formation rate and the power generated by black holes in centers of galaxies. The study, published this week in the journal Nature, comes a time when the flow of black hole radiation prevents the formation of more stars.The blue dots correspond to active galaxies, emitting X-rays detected from the Herschel Space Observatory of ESA. Image: ESA / NASA / CXCIn the center of large galaxies is usually a black hole and its presence influences the stars who live around them. Now an international team of research involving the Canary Islands Astrophysics Institute (IAC) and other Spanish-described in Nature the physical relationship between them and the rate of star formation around the so-called 'active galactic nuclei' (AGN, for its acronym in English). 

"The relationship between these two factors suspected for years, but in this work we have clearly identified for the first time," said Dr. Antonio SINC Cava.One of the most energetic phenomena in the universe is the growth of a black hole. In the center of the galaxy emits radiation that dominates the observable generated by stars at almost any wavelength. For measuring the star formation, scientists have analyzed the sky in wavelength sub-millimeter from the Herschel Space Observatory of the European Space Agency.



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