First Look at Milky Way’s Monster in High-Energy X-ray Light
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The Black Hole in the Milky Way
At the center of our Milky Way Galaxy, a mere 27,000 light-years away, lies a black hole with 4 million times the mass of the Sun. Fondly known as Sagittarius A* (pronounced A-star), the Milky Way’s black hole is fortunately mild-mannered compared to the central black holes in distant active galaxies, much more calmly consuming material around it. From time to time it does flare-up, though. A recent outburst lasting several hours is captured in this series of premier X-ray images from the orbiting Nuclear Spectroscopic Telescope Array (NuSTAR). Launched last June 13, NuSTAR is the first to provide focused views of the area surrounding Sgr A* at X-ray energies higher than those accessible to Chandra and XMM observatories. Spanning two days of NuSTAR observations, the recent flare sequence is illustrated in the panels at the far right. X-rays are generated in material heated to over 100 million degrees Celsius, accelerated to nearly the speed of light as it falls into the Miky Way’s central black hole. T
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Zooming Into The Center Of The Milky Way [720p]
This zoom sequence stars with a view of the Milky Way. We zoom in towards the crowded central region, in the constellation of Sagittarius (The Archer). By shifting to an infrared view we see through the dusty clouds in this direction and get a close up view of the objects orbiting the supermassive black hole that lies at the center of the Milky Way. The final views show the motion of a newly-discovered gas cloud that is falling rapidly towards the central black hole.
credit: ESO/MPE/Nick Risinger (skysurvey.org)/VISTA/J. Emerson/Digitized Sky Survey 2 Music: xxx
Enviado por djxatlanta em 14/12/2011
O NuSTAR (acrônimo de: Nuclear Spectroscopic Telescope Array) é um satélite espacial estadunidense que usa um telescópio Wolter para concentrar a energia de raios-X a partir de objetos celestiais.
NuSTAR in Space [720p]
NASA’s newest X-ray telescope, the Nuclear Spectroscopic Telescope Array (NuSTAR), will have a lengthy structure that unfolds in space, allowing it to see high-energy objects like feeding black holes. The spacecraft will lift off on an Orbital Sciences Pegasus XL rocket, which will be released from an aircraft taking off from the Reagan Test Site on the Kwajalein Atoll in the Marshall Islands.
For more information, visit http://www.nasa.gov/nustar and http://www.nustar.caltech.edu/
Publicado em 19/03/2012 por djxatlanta
At the Center of the Milky Way