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The AstronomersTotemtag - High Energy
Totemtag - High Energy
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This video, the third of a series of astronomy clips, might be considered Part II of my previous "Invisible Colors", and is also strictly related to my previous "Interstellar". It describes the Universe as it is shown by the most recent X-ray and Gamma-ray space telescopes such as Chandra and Fermi respectively. X-ray and Gamma-ray electromagnetic emission -- which corresponds to the highest frequency and energy -- from celestial bodies is a testimony of very violent processes where extremely high temperatures are liberated. This means a minimum value of T = 1 million °K (soft X rays) up to a maximum value of T = 1 billion °K (hard gamma rays), more or less. The minimum is about a factor 200 higher than solar photosphere's temperature. Such processes are present in a quite widely varied astrophysical zoology that ranges from galactic to extragalactic objects, in particular: the corona of the Sun and of other stars, flare stars, x-ray close binary stars, interstellar shock fronts, supernova remnants, hypernovas, gamma-ray bursts, pulsars, magnetars, active galactic nuclei and jets, quasars, galactic clusters and the intergalactic medium. More or less this video shows some of these objects in time sequence. Of course colors that are not coming from the optical range are always false colors: mostly blue and violet (and sometimes gold), but sometimes other colors too are used. Most of the images shown are composite images, namely a sum of optical, infrared (also in false color), and X-ray. Some images show only the X-ray emission (usually in blue). Gamma-ray mapping of our galaxy shows mostly Gamma-rays. All the most important and updated information of pertinence can be found here: Chandra X-ray Observatory: Fermi Gamma-ray Space Telescope: The music is a long and hypnotic sequencer riff, which is intended to evoke the highly dynamic character and violence of high-energy processes in astrophysics.
Added on Nov 20, 2012 by Ordonomundi
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Time: 14:24 | Views: 3075 | Comments: 0
  Extragalactic astronomy  
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