منابع مشابه
Detecting Cosmic Rays of the Highest Energies
The highest energies are defined, at a given time, by our detector capabilities. Thus the highest energies will be the just measured or soon to be measured energies. To-day, the frontier in cosmic rays reaches 10 eV. This represents a macroscopic energy, namely 16 J, transported by a microscopic object. For charged particles, the highest energy events seem to necessitate some New Physics, beyon...
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After a century of observations, we still do not know the origin of cosmic rays. I will review the current state of cosmic ray observations at the highest energies, and their implications for proposed acceleration models and secondary astroparticle fluxes. Possible sources have narrowed down with the confirmation of a GZK-like spectral feature. The anisotropy observed by the Pierre Auger Observ...
متن کاملHighest Energy Cosmic Rays
It is proposed that the highest energy ∼ 10 20 eV cosmic ray primaries are protons, decay products of a long-lived progenitor whose high kinetic energy arises from decay of a distant (cosmological) superheavy particle, G. Such a scenario can occur in e.g. SU (15) grand unification and in some preon models, but is more generic; if true, these unusual cosmic rays provide a window into new physics...
متن کاملHighest Energy Cosmic Rays
We review the current state and future prospect of ultra high energy cosmic ray physics and the relationship between cosmic rays and gamma-ray astrophysics.
متن کاملThe Highest - Energy Cosmic Rays
The unexpected discovery of the cosmic microwave background by Arno Penzias and Robert Wilson in 1965 is now the centerpiece of our understanding of the Big Bang and the subsequent evolution of the universe. (See PHYSICS TODAY, November 1997, page 32.) The discovery also set off something of a race to verify one of its implications for cosmic rays. In 1966, Kenneth Greisen (Cornell University) ...
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ژورنال
عنوان ژورنال: Nuclear Physics B - Proceedings Supplements
سال: 1993
ISSN: 0920-5632
DOI: 10.1016/0920-5632(93)90078-k