Credit: Gunther Hasinger, Nico Cappelluti and the XMM-COSMOS collaboration and ESA
XMM View of the COSMOS
What's the 3-D structure of the Universe? That's a question not only of space but of time, since the more distant you look back in space, the more distant you look back in time too. A complicated question, being addressed by the Cosmological Evolution Survey, aka COSMOS. COSMOS is a survey of 2 square degrees in the sky with imaging by most space-based telescopes (like HST, Spitzer, GALEX, XMM-Newton and Chandra) along with a good complement of ground-based observatories too (Subaru, the VLA, ESO-VLT, NOAO to name just a few). The image above shows the XMM-Newton view of the X-ray emission from sources in the COSMOS field. In this image X-ray color stands for X-ray energy, where red represents low-energy photons (from low-temperature or unabsorbed sources) while blue at the other end of the spectrum represents high-energy emission from very energetic or highly absorbed sources. Many of the sources show emission from supermassive black holes in active galactic nuclei distributed throughout that part of the Universe, along with diffuse emission from clusters of Galaxies.
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Page Author: Dr. Michael F. Corcoran
Last modified Sunday, 10-Feb-2008 21:18:57 EST
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