Friday, February 25, 2011

Making A Congratulatory Speech

the murmur of a monster.

The Andromeda galaxy is the nearest big galaxy to our Milky Way. Like the Milky Way has a spiral arm structure with a massive black hole at its core. Unlike Milky Way, however, the black hole is remarkable in size - about 30 times larger than our galaxy, or about a hundred million times the mass solares.También is strangely very passive: the supermassive black holes Similar distant galaxies are often surrounded by accretion disks that emit bright X-rays and generate powerful jets of particles cargadas.Andrómeda lacks both. Astronomers want to understand why the heart of Andromeda is so still, so to model the behavior of black hole, as well as trying to understand why they are so distant galactic nuclei different, astronomers also made the question of whether the Milky Way once went through a similar phase?


composite image of the Andromeda galaxy in infrared (red) and X-rays (blue). A new study by X-ray emission from the region around the supermassive black hole at the galaxy's core activity is of bursts, is the first time that such processes (similar to the Milky Way) have been observed anywhere else other than our galaxia.Credito: Herschel ESA's XMM-Newton.

The black hole of the Milky Way is also at rest compared with that of other galaxies, but it is curious that erupts from time to time in X-rays, infrared and radio wavelengths, sometimes increasing their brightness by a factor of ten or a hundred a short time. It was thought that perhaps the black hole environment of the Milky Way was different in a special way, perhaps in some way related to the greater questions about the ultimate issue remote systems. Astronomers CfA
Zhiyuan Li, Michael Garcia, Bill Forman, Christine Jones, Ralph Kraft, Dharam Val and Steve Murray, carefully analyzed a decade of X-ray observations made by the Chandra Observatory of the Andromeda galaxy , resulting notable.Encontraron that although the core was passive from 1999 to 2005 in 2006 increased its X-ray luminosity by forty times, and remains bright and variable today. The team proposes to do in future studies coordinated X-ray and radio. The results are important to show that the black hole of the Milky Way is not the only (at least in regard to outbreaks), and provides a step towards a better understanding of what happens in other galactic nuclei with holes black.



read the study HERE




source of information:




http://www.cfa.harvard.edu/news/2011/su201108.html
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