Gamma ray spectrum of the crab nebula in the multi TeV region
1993; Elsevier BV; Volume: 1; Issue: 4 Linguagem: Inglês
10.1016/0927-6505(93)90001-t
ISSN1873-2852
AutoresP. Baillon, L. Behr, S. Danagoulian, B. Dudelzak, P. Espigat, P. Eschstruth, B. Fabre, G. Fontaine, R. George, C. Ghesquière, F. Kovacs, C. Meynadier, Y. Pons, R. Riskalla, M. Rivoal, Philippe Roy, Ph. Schune, T. Socroun, A.M. Touchard, J. Vrána,
Tópico(s)Astrophysics and Cosmic Phenomena
ResumoThe THEMISTOCLE array of 18 Cherenkov detectors which has a 3 TeV gamma energy threshold, has detected a signal from the Crab nebula at a 5.8 standard deviation level. Information on the energy spectrum is obtained in the range 3–15 TeV. The integrated flux can be fitted with the form, Φ (> E) = (3.7 ± 0.5) × 10-12 (E/5)-−1.5 ± 0.20 cm−2 s−1 (E in TeV) compatible with the extrapolation of results at lower energies. The Crab signal is used to measure the angular resolution of the multi-telescope technique. The value obtained is 2.3 mr (0.15°) in agreement with the results of simulations, and confirms the interest of this new method for multi-TeV gamma-ray detection.
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