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Neptune's Kingdom PDF Print E-mail
Written by Daniel Marin   
Tuesday, 08 July 2008

The more messengers we use, the more information we can extract from the same sources. Low-energy neutrinos can give information about the Sun or supernovae and are already being studied in underground laboratories. On the other hand, highenergy neutrinos can give precious information about violent processes in the Universe, but the size needed to detect enough neutrinos to perform neutrino astronomy is so large that detectors would not fit in underground sites. Physicists have conceived the construction of large deep undersea infrastructures where water itself acts as detector and shield from cosmic rays. Such telescopes use arrays of optical modules distributed in large volumes to detect the light induced by particles interacting in the sea water.

Antares A photomultiplier is a widely used instrument in astroparticle physics experiments, it converts light into an electrical signal, acting as an “electronic eye”. When a high-energy neutrino interacts, it sometimes produces an up-going muon in the sea, which will give rise to blue Cherenkov light, which in turn will be seen by an array of photomultipliers.

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Last Updated ( Tuesday, 01 June 2010 )
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