Limits on the TeV flux of diffuse gamma rays as measured with the HEGRA air shower array

Autor: V. Sahakian, H. J. Gebauer, N. Magnussen, G. Rauterberg, Wolfgang Rhode, W. Stamm, Dieter Horns, D. Kranich, F. Lucarelli, Konrad Bernlöhr, Frank G. Schröder, V. Fonseca, M. Tluczykont, O. Bolz, A. Plyasheshnikov, A. Konopelko, Jose Luis Contreras, O. Mang, Juan Cortina, Abelardo Moralejo, H. Bojahr, H. Börst, H. Lampeitl, C. A. Wiedner, Felix Aharonian, G. Hermann, R. Plaga, H. Meyer, W. Wittek, Gavin Rowell, R. Mirzoyan, A. G. Akhperjanian, Juan Abel Barrio, E. Lorenz, I. Jung, Gerd Pühlhofer, R. Kankanyan, Werner Hofmann, A. Röhring, J. Kettler, Heinrich J. Völk, A. Heusler, M. A. Lopez, A. Ibarra, M. Siems, J. Prahl, H. Kornmayer, M. Samorski, C. Iserlohe, G. Heinzelmann, J. C. Gonzalez, M. Panter, M. Kestel, N. Götting, L. Padilla, M. Schilling, E. Ona, Henric Krawczynski, S. Denninghoff, A. Kohnle
Rok vydání: 2002
Předmět:
Zdroj: Astroparticle Physics. 17:459-475
ISSN: 0927-6505
DOI: 10.1016/s0927-6505(01)00175-x
Popis: Using data from the HEGRA air shower array, taken in the period from April 1998 to March 2000, upper limits on the ratio Iγ/ICR of the diffuse photon flux Iγ to the hadronic cosmic ray flux ICR are determined for the energy region 20–100 TeV. The analysis uses a gamma–hadron discrimination which is based on differences in the development of photon- and hadron-induced air showers after the shower maximum. A method which is sensitive only to the non-isotropic component of the diffuse photon flux yields an upper limit of Iγ/ICR (at 54 TeV)
Databáze: OpenAIRE
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