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

Aharonian, F. A.; Akhperjanian, A. G.; Barrio, J. A.; Bernlöhr, K.; Bojahr, H.; Bolz, O.; Borst, H.; Contreras, J. L.; Cortina, J.; Denninghoff, S.; Fonseca, V.; Gebauer, H. J.; Gonzalez, J. C.; Gotting, N.; Heinzelmann, G.; Hermann, G.; Heusler, A.; Hofmann, W.; Horns, D.; Ibarra, S.; Iserlohe, C.; Jung, I.; Kankanyan, R.; Kestel, M.; Kohnle, A.; Konopelko, A.; Kornmayer, H.; Kranich, D.; Krawczynski, H.; Lampeitl, H.; Lopez, M.; Lorenz, E.; Lucarelli, F.; Magnussen, N.; Mang, O.; Meyer, H.; Mirzoyan, R.; Moralejo, A.; Ona, E.; Padilla, L.; Panter, M.; Plaga, R.; Plyasheshnikov, A.; Prahl, J.; Pühlhofer, G.; Rauterberg, G.; Rhode, W.; Rohring, A.; Rowell, G. P.; Sahakian, V.; Samorski, M.; Schilling, M.; Schroder, F.; Siems, M.; Stamm, W.; Tluczykont, M.; Völk, H. J.; Wiedner, C.; Wittek, W.

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

Aharonian, F. A., Akhperjanian, A. G., Barrio, J. A., Bernlöhr, K., Bojahr, H., Bolz, O., et al. (2002). Limits on the TeV flux of diffuse gamma rays as measured with the HEGRA air shower array. Astroparticle Physics, 17(4), 459-475.

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Item Permalink: https://hdl.handle.net/11858/00-001M-0000-0011-82F2-E Version Permalink: https://hdl.handle.net/11858/00-001M-0000-002D-D6F5-3

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Aharonian, F. A.¹, Author
Akhperjanian, A. G.¹, Author
Barrio, J. A.², Author
Bernlöhr, K.¹, Author
Bojahr, H.², Author
Bolz, O.¹, Author
Borst, H.², Author
Contreras, J. L.², Author
Cortina, J.², Author
Denninghoff, S.², Author
Fonseca, V.², Author
Gebauer, H. J.¹, Author
Gonzalez, J. C.², Author
Gotting, N.², Author
Heinzelmann, G.², Author
Hermann, G.¹, Author
Heusler, A.¹, Author
Hofmann, W.¹, Author
Horns, D.¹, Author
Ibarra, S.², Author
Iserlohe, C.², AuthorJung, I.¹, Author         Kankanyan, R.¹, Author         Kestel, M.², AuthorKohnle, A.¹, Author         Konopelko, A.³, Author         Kornmayer, H.², AuthorKranich, D.², AuthorKrawczynski, H.¹, Author         Lampeitl, H.¹, Author         Lopez, M.², AuthorLorenz, E.², AuthorLucarelli, F.², AuthorMagnussen, N.², AuthorMang, O.², AuthorMeyer, H.², AuthorMirzoyan, R.², AuthorMoralejo, A.², AuthorOna, E.², AuthorPadilla, L.², AuthorPanter, M.¹, Author         Plaga, R.², AuthorPlyasheshnikov, A.¹, Author         Prahl, J.², AuthorPühlhofer, G.¹, Author         Rauterberg, G.², AuthorRhode, W.², AuthorRohring, A.², AuthorRowell, G. P.¹, Author         Sahakian, V.², AuthorSamorski, M.², AuthorSchilling, M.¹, Author         Schroder, F.², AuthorSiems, M.², AuthorStamm, W.², AuthorTluczykont, M.², AuthorVölk, H. J.³, Author         Wiedner, C.¹, Author         Wittek, W.¹, Author          more..

Affiliations:
1Division Prof. Dr. Werner Hofmann, MPI for Nuclear Physics, Max Planck Society, ou_904550
2Yerevan Phys Inst, Yerevan 375036, Armenia; Univ Complutense Madrid, Fac Ciencias Fis, E-28040 Madrid, Spain; Berg Univ Gesamthsch Wuppertal, Fachbereich Phys, D-42097 Wuppertal, Germany; Univ Kiel, Inst Exptl & Angew Phys, D-24118 Kiel, Germany; Univ Hamburg, Inst Expt Phys 2, D-22761 Hamburg, Germany, ou_persistent22
3Prof. Heinrich J. Völk, Emeriti, MPI for Nuclear Physics, Max Planck Society, ou_907548

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Free keywords: cosmic rays; diffuse gamma-ray galactic emission; gamma rays; observations

Abstract: Using data from the HEGRA air shower array. taken in the period from April 1998 to March 2000, upper limits on the ratio I- gamma/I-CR of the diffuse photon flux I-gamma to the hadronic cosmic ray flux I-CR 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 I-gamma/I-CR (at 54 TeV) < 2.0 x 10 (3) (at the 90% confidence level) for a sky region near the inner galaxy (20degrees < galactic longitude < 60degrees and \galactic latitude\ < 5degrees). A method which is sensitive to both the isotropic and the non-isotropic component yields global upper limits of I-gamma/I-CR (at 31 TeV) < 1.2 x 10(-2) and I-gamma/(CR) (at 53 TeV) < 1.4 x 10 (2) (at the 90% confidence level). (C) 2002 Elsevier Science B.V. All rights reserved.

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Language(s): eng - English

Dates: Published in Print: 2002-07

Publication Status: Published in print

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Rev. Type: Peer

Identifiers: eDoc: 28253
ISI: 000176198700008

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Title: Astroparticle Physics

Alternative Title : Astropart Phys.

Source Genre: Journal

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Pages: - Volume / Issue: 17 (4) Sequence Number: - Start / End Page: 459 - 475 Identifier: ISSN: 0927-6505