Correlation function of ultrahigh-energy cosmic rays favors point sources
نویسندگان
چکیده
منابع مشابه
Ultrahigh Energy Cosmic Rays Detection
The paper describes methods used for the detection of cosmic rays with energies above 1018 eV (UHECR, UltraHigh Energy Cosmic Rays). It had been anticipated there would be a cutoff in the energy spectrum of primary cosmic rays around 3·1019 eV induced by their interaction with the 2.7 K primordial photons. This has become known as the GZK cutoff. However, several showers have been detected with...
متن کاملAngular Correlation Estimates for Ultrahigh Energy Cosmic Rays
Identifying the sources of ultrahigh energy cosmic rays remains one of the major challenges in astrophysics. If these cosmic rays are not too severely deflected by magnetic fields while in transit, then their arrival directions will provide crucial information about their origins. The High Resolution Fly’s Eye (HiRes) experiment, consisting of two air fluorescence detector sites, has been makin...
متن کاملA Cluster of Ultrahigh Energy Cosmic Rays
Five ultrahigh energy cosmic rays in the combined AGASA and HiRes stereo data are analyzed to test whether they come from a single source. The quad above 37 EeV in the 94-event high energy dataset can be analyzed without considering magnetic dispersion. The probability that it is a chance association is 10. Assuming the source is continuous, the random magnetic deflections these UHECRs accumula...
متن کاملParticle Candidates of Ultrahigh Energy Cosmic Rays
We discuss candidates for trans-GZK cosmic rays observed in a variety of detectors. Three types of primaries are represented among the abstracts submitted to this meeting: neutrinos causing a Z-burst, protons arising from the decay of ultra-heavy metastable particles and neutrinos within the framework of low scale string-like models of unification. We attempt to evaluate the relative merits of ...
متن کاملNew physics from ultrahigh energy cosmic rays
Observations of cosmic rays with energies above ∼ 4 × 10 GeV have inspired several speculative suggestions concerning their origin. The crucial question is whether or not the spectrum exhibits the expected ‘GZK cutoff’ at this energy — concerning which there are presently contradictory results. If there is indeed a cutoff, then the sources are cosmologically distant and rather exotic in nature....
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Experimental and Theoretical Physics Letters
سال: 2001
ISSN: 0021-3640,1090-6487
DOI: 10.1134/1.1402195