A limit on the diffuse gamma-rays measured with KASCADE-Grande

24th European Cosmic Ray Symposium

Kang, D.^1 ; Apel, W.D.^2 ; Arteaga-Velázquez, J.C.^3 ; Bekk, K.^2 ; Bertaina, M.^4 ; Blümer, J.^1,2 ; Bozdog, H.^2 ; Brancus, I.M.^5 ; Cantoni, E.^4,6,15 ; Chiavassa, A.^4 ; Cossavella, F.^1,16 ; Daumiller, K.^2 ; De Souza, V.^7 ; Di Pierro, F.^4 ; Doll, P.^2 ; Engel, R.^2 ; Feng, Z.^8 ; Fuhrmann, D.^9,17 ; Gherghel-Lascu, A.^5 ; Gils, H.J.^2 ; Glasstetter, R.^9 ; Grupen, C.^10 ; Haungs, A.^2 ; Heck, D.^2 ; Hörandel, J.R.^11 ; Huber, D.^1 ; Huege, T.^2 ; Kampert, K.H.^9 ; Klages, H.O.^2 ; Link, K.^1 ; Luczak, P.^12 ; Mathes, H.J.^2 ; Mayer, H.J.^2 ; Milke, J.^2 ; Mitrica, B.^5 ; Morello, C.^6 ; Oehlschläger, J.^2 ; Ostapchenko, S.^13 ; Palmieri, N.^1 ; Petcu, M.^5 ; Pierog, T.^2 ; Rebel, H.^2 ; Roth, M.^2 ; Schieler, H.^2 ; Schoo, S.^2 ; Schröder, F.^2 ; Sima, O.^14 ; Toma, G.^5 ; Trinchero, G.C.^6 ; Ulrich, H.^2 ; Weindl, A.^2 ; Wochele, J.^2 ; Zabierowski, J.^12

Institut für Experimentelle Kernphysik, KIT-Karlsruher Institut für Technologie, Germany^1

Institut für Kernphysik, KIT-Karlsruher Institut für Technologie, Germany^2

Universidad Michoacana, Instituto de Fisica y Matemáticas, Mexico^3

Dipartimento di Fisica, Università Degli Studi di Torino, Italy^4

National Institute of Physics and Nuclear Engineering, Bucharest, Romania^5

Istituto di Fisica Dello Spazio Interplanetario, INAF Torino, Italy^6

Universidade São Paulo, Instituto de Física de São Carlos, Brazil^7

Institute of High Energy Physics, Beijing, China^8

Fachbereich Physik, Universität Wuppertal, Germany

(10) Fachbereich Physik, Universität Siegen, Germany

(11) Dept. of Astrophysics, Radboud University Nijmegen, Netherlands

(12) National Centre for Nuclear Research, Department of Astrophysics, Lodz, Poland

(13) Frankfurt Institute for Advanced Studies (FIAS), Frankfurt am Main, Germany

(14) Department of Physics, University of Bucharest, Bucharest, Romania

(15) Istituto Nazionale di Ricerca Metrologia, INRIM, Torino, Italy

(16) DLR Oberpfaffenhofen, Germany

(17) University of Duisburg-Essen, Duisburg, Germany^9

关键词: Air showers;    Energy ranges;    KASCADE-Grande;    Relative intensity;    Ultra-high energies;    Upper limits;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/632/1/012013/pdf
DOI  :  10.1088/1742-6596/632/1/012013

来源: IOP

【 摘 要 】

Using data measured by the KASCADE-Grande air shower array, an upper limit to the flux of ultra-high energy gamma-rays in the primary cosmic-ray flux is determined. KASCADE-Grande measures the electromagnetic and muonic components for individual air showers in the energy range from 10 PeV up to 1 EeV. The analysis is performed by selecting air showers with low muon contents. A preliminary result on the 90% C.L. upper limit to the relative intensity of gamma-ray with respect to cosmic ray primaries is presented and compared with limits reported by other measurements.