KASCADE-Grande Limits on the Isotropic Diffuse Gamma-Ray Flux between 100 TeV and 1 EeV
Journal
Date Issued
2017
Author(s)
Apel, W. D.
•
Arteaga-Velázquez, J. C.
•
Bekk, K.
•
Bertaina, M.
•
Blümer, J.
•
Bozdog, H.
•
Brancus, I. M.
•
Cantoni, E.
•
Chiavassa, A.
•
Cossavella, F.
•
Daumiller, K.
•
de Souza, V.
•
Di Pierro, F.
•
Doll, P.
•
Engel, R.
•
Feng, Z.
•
Fuhrmann, D.
•
Gherghel-Lascu, A.
•
Gils, H. J.
•
Glasstetter, R.
•
Grupen, C.
•
Haungs, A.
•
Heck, D.
•
Hörandel, J. R.
•
Huege, T.
•
Kampert, K. -H.
•
Kang, D.
•
Klages, H. O.
•
Link, K.
•
Łuczak, P.
•
Mathes, H. J.
•
Mayer, H. J.
•
Milke, J.
•
Mitrica, B.
•
Morello, C.
•
Oehlschläger, J.
•
Ostapchenko, S.
•
Pierog, T.
•
Rebel, H.
•
Roth, M.
•
Schieler, H.
•
Schoo, S.
•
Schröder, F. G.
•
Sima, O.
•
Toma, G.
•
•
Ulrich, H.
•
Weindl, A.
•
Wochele, J.
•
Zabierowski, J.
•
KASCADE-Grande Collaboration
Abstract
KASCADE and KASCADE-Grande were multi-detector installations to measure individual air showers of cosmic rays at ultra-high energy. Based on data sets measured by KASCADE and KASCADE-Grande, 90% C.L. upper limits to the flux of gamma-rays in the primary cosmic ray flux are determined in an energy range of {10}14{--}{10}18 eV. The analysis is performed by selecting air showers with a low muon content as expected for gamma-ray-induced showers compared to air showers induced by energetic nuclei. The best upper limit of the fraction of gamma-rays to the total cosmic ray flux is obtained at 3.7× {10}15 eV with 1.1× {10}-5. Translated to an absolute gamma-ray flux this sets constraints on some fundamental astrophysical models, such as the distance of sources for at least one of the IceCube neutrino excess models.
Volume
848
Issue
1
Start page
1
Issn Identifier
0004-637X
Ads BibCode
2017ApJ...848....1A
Rights
open.access
File(s)![Thumbnail Image]()
Loading...
Name
AP_848_2017_10_10.pdf
Description
Pdf editoriale
Size
845.01 KB
Format
Adobe PDF
Checksum (MD5)
014eaae7c70916eea752907a877ed5e3