Computer Science – Performance
Scientific paper
Jan 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989ssrv...49..227b&link_type=abstract
Space Science Reviews, Volume 49, Issue 1-2, pp. 227-237
Computer Science
Performance
Scientific paper
Large underground (underwater) detectors (such as ‘Baikal’ and DUMAND) are discussed for their possible use as gamma-ray telescopes. The signal is caused by high-energy muons (E μ ≳ 30 100 TeV) produced by the primary gamma-radiation in the Earth's atmosphere. The production of gamma-rays in the source through the reaction p + p → π 0 + X is calculated for a low density target of arbitrary thickness taking the electromagnetic cascade into account. The muon production by gamma-rays in the Earth's atmosphere is calculated using three processes: (i) photoproduction of π- and K-mesons followed by decay to muons, (ii) the direct production of μ+ μ--pairs: γ + Z → Z + μ + + μ-, and (iii) photoproduction of charmed particles. It is shown that for thin sources with a flat spectrum (integral exponent γ = 1.1) a large (S = 0.1 km2) underground detector can detect both neutrinos and gamma-quanta generated by the source. Finally we compare the performances of underground detectors with S = 0.1 km2 for the search of gamma sources at E = 100 TeV with those of the previously proposed 1 km2 EAS array.
Berezinsky Veniamin S.
Cini-Castagnoli G.
Kudryavtsev Vitaly A.
Ryazhskaya Ol'ga G.
Zatsepin Georgii T.
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