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Principles Of Radiation Interaction In Matter And Detection Leroy C., Rancoita P. G.
Publisher: WS

Essentially, the interactions and collisions within the accretion disk convert the momentum energy of the orbiting matter into radiation. The Planck Satellite has observed a very unique emission of radio radiation from the center of the Milky Way, moving scientists closer than ever to a solution to the origin of dark matter. Ultraviolet (UV)-visible spectrometers are used to analyze the interactions between radiation and matter in the UV-visible region of the electromagnetic spectrum. The image shows emission from the center of the Milky Way, detected by PLANCK satellite. Of the universe , as some do, inferring the existence of stuff that cannot be detected by telescopes or antennae or the other ways in which we presently can interact with the great beyond outside our solar system, seems hardly remarkable. They're right to be cautious: several marginal observations of dark If a dark matter particle known as a WIMP (weakly interacting massive particle) hits a nucleus inside the crystal, it will set up a small vibration: a quantum sound wave known as a phonon. If these really do exist, there would be millions passing through us every second. Begin to interact with each other and self-annihilate, producing a characteristic positron energy signature that the Alpha Magnetic Spectrometer 2, aboard the International Space Station, may have recently detected (see this AmericaSpace article). Dark matter particles are also usually very scattered and do not interact with each other. Principles Of Radiation Interaction In Matter And Detection. The most popular idea of Dark Matter we have, is that is made of WIMPs, or Weakly Interacting Massive Particles. Dark matter, dark energy, dark money, dark markets, dark biomass, dark lexicon, dark genome: scientists seem to add dark to any influential phenomenon that is poorly understood and somehow obscured from direct perception. Some of its properties could be defined already, we obviously couldn't see it, so it didn't interact with electromagnetic radiation (light would simply pass straight through it) but its main property was that it had mass. Presumably a similar principle applies to weakly-interacting dark matter particles. 4 out of 5 dentists recommend this WordPress.com site. Yesterday, researchers working with the Cryogenic Dark Matter Search (CDMS) announced a possible detection of three dark matter particles.