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

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

Aug 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001icrc....6.2339w&link_type=abstract

Proceedings of the 27th International Cosmic Ray Conference. 07-15 August, 2001. Hamburg, Germany. Under the auspices of the Int

Physics

Scientific paper

Using data from the HEGRA air shower array 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 TeV to 100 TeV. 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) < 2.0 × 10-3 (at the 90% confidence level) for a sky region near the inner galaxy (20° < galactic longitude < 60° and |galactic latitude| < 5° ). A method which is sensitive to both the isotropic and the non-isotropic component yields global upper limits of Iγ/ICR (at 53 TeV) < 1.4 × 10-2 and Iγ/ICR (at 31 TeV) < 1.2 × 10-2 (at 90% c.l.).

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