Highest Energy Cosmic Rays
نویسنده
چکیده
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.
منابع مشابه
High-energy Neutrinos from Cosmic Rays
We introduce neutrino astronomy from the observational fact that Nature accelerates protons and photons to energies in excess of 10 and 10 eV, respectively. Although the discovery of cosmic rays dates back close to a century, we do not know how and where they are accelerated. We review the facts as well as the speculations about the sources. Among these gamma ray bursts and active galaxies repr...
متن کاملAre Extragalactic Gamma Ray Bursts The Source Of The Highest Energy Cosmic Rays?
Recent observations with the large air shower arrays of ultra high energy cosmic rays (UHECR) and recent measurements/estimates of the redshifts of gamma ray bursts (GRBs) seem to rule out extragalactic GRBs as the source of the cosmic rays that are observed near Earth, including those with the highest energies. Subject headings: cosmic rays; gamma rays bursts
متن کاملHigh-energy Neutrino Astronomy: Science and First Results
We introduce neutrino astronomy starting from the observational fact that Nature accelerates protons and photons to energies in excess of 10 and 10 eV, respectively. Although the discovery of cosmic rays dates back a century, we do not know how and where they are accelerated. We review the observations as well as speculations about the sources. Among these gamma ray bursts and active galaxies r...
متن کاملAstrophysics at the Highest Energy Frontiers
I discuss recent advances being made in the physics and astrophysics of cosmic rays and cosmic γ-rays at the highest observed energies as well as the related physics and astrophysics of very high energy cosmic neutrinos. I also discuss the connections between these topics.
متن کاملUltra High Energy Cosmic Rays: the Present Position and the Need for Mass Composition Measurements* 1. Motivation for Studying the Highest Energy Cosmic Rays
The present situation with regard to experimental data on ultra high-energy cosmic rays is briefly reviewed. Whilst detailed knowledge of the shape of the energy spectrum is still lacking, it is clear that events above 10 20 eV do exist. Evidence for clustering of the directions of some of the highest energy events remains controversial. Clearly, more data are needed and these will come from th...
متن کامل