Astronomy and Astrophysics – Astrophysics
Scientific paper
Aug 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007jena.confr..42c&link_type=abstract
"JENAM-2007, "Our non-stable Universe", held 20-25 August 2007 in Yerevan, Armenia. Abstract book, p. 42-42"
Astronomy and Astrophysics
Astrophysics
Scientific paper
The Cosmic Ray energy domain 10^17eV~10^18eV is an enigmatic region where may be mysterious extragalactic CRs, presumably produced in Active Galactic Nuclei is mixing with fading galactic iron flux. This important question of transition from galactic to extragalactic component can only be solved by measuring partial energy spectra, and not only all-particle energy spectra. The explanation of the spectra features (2nd knee, ankle and the GZK cutoff) are possible only after disentangling all-particle spectra into 2 or more components. We propose to build the new large EAS detector in Nor-Amberd - Antarut region on slopes of mt. Aragats at altitude ~ 2000 m. 2 networks of particle detectors will be formed around central part of ~ 20 m.sq. hybrid particle detectors, measuring neutrons, electrons and muons of the shower. The third site will be formed by the particle detectors of MAKET-ANI and GAMMA EAS arrays at top of mt. Aragats. All 3 sites have total area ~0.35 km sq., and will detect primary particles with energies up to several units of 10^17 eV. Huge events triggering 2 arrays from 3 will correspond to the primary energies above 10^19 eV, EAS core collection area will be ~15 km sq. and 75 km sq. correspondingly for 2 and 5 km radii circles(~150 events with energy above 10^19 eV are expected per year). In the second phase of the project we plan to deploy additional scintillator modules in Byurakan Astrophysical Observatory (BAO), in the Institute of radio-measurements in Orgoff, in village schools fallen within big detector area. Ultra-high energy cosmic rays detected by the NewANI detector will be correlated with optical data obtained by NOMOT mini observatory now under construction in Nor Amberd and with data from world largest Cherenkov Atmospheric Telescope MAGIC operated on Canary Islands.
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