Physics
Scientific paper
Jul 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003icrc....5.2591s&link_type=abstract
Proceedings of the 28th International Cosmic Ray Conference. July 31-August 7, 2003. Trukuba, Japan. Under the auspices of the I
Physics
Scientific paper
A new metagalactic source of gamma-quanta with energies > 0.8 TeV with flux (0.78 ± 0.13) • 10-12 cm-2 s-1 seyfert galaxy NGC1275 was detected. Active galactic nuclei 3c454.3 and 1739+522 (z=0.859 and z= 1.375) with flux accordingly (0.43 ± 0.17) • 10-12 cm-2 s-1 and (0.47 ± 0.18) • 10-12 cm-2 s-1 were also detected. The observed gamma-quanta energy spectra of four galactic and five metagalactic sources doesn't contradict with average energy spectra of this sources in energy rage 1 50 TeV f (Eγ )dEγ ˜ Eγ 2.35±0.16 dEγ . The differential - spectrum of protons and cosmic ray nuclei at energy interval 1 - 3 • 107 eV is f (E )dE ˜ E -2.72±0.1 dE . The investigation of extra-high energy gamma-quanta sources by any methods including mirror Cherenkov astronomy touches the problem of cosmic ray nature and correspondingly the role of Galaxy and Metagalaxy in their generation. Created at the Leb edev Physical Institute and stated at the Alato o mountains 3338 m high above the sea level SHALON-1 mirror telescope with mirrors square 11.2 m2 and image-matrix consisting of 144 photomultipliers with the full angle of > 8o was used for observations of galactic and metagalactic veryhigh energy gamma-quanta at the energy range 1-50 TeV sources. From Fig.1 (these proc.) of used in SHALON experiment gamma-quanta and proton with energy 1 TeV image-parameters Monte-Carlo simulations and of experimental gamma-quanta from local sources and cosmic rays protons image-parameters distributions observed by SHALON telescope one can see that selection criteria used in SHALON-1 experiment extracts gamma from the proton background which confirms correctness of chosen in SHALON experiment gamma selection criteria. The SHALON-1 observations at Tien-Shan high-mountainous station were carried out since 1992 during this period 12 metagalactic and galactic sources were observed. Among them are galactic sources Crab Nebula (the supernova remnant), Cygnus X-3 (binar), Tycho Brage (sup ernova remnant), Geminga (radioweak pulsar) and metagalactic ones Markarian 501 (blazar), Markarian 421(blazar),
Alaverdian A. Y.
Arsov T. P.
Borisov S.S.
Kasparov G. M.
Mirzafatikhov R. M.
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