R
R. Engel
Researcher at University of Delaware
Publications - 392
Citations - 10027
R. Engel is an academic researcher from University of Delaware. The author has contributed to research in topics: Cosmic ray & KASCADE. The author has an hindex of 47, co-authored 366 publications receiving 8742 citations. Previous affiliations of R. Engel include Pennsylvania State University.
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BL Lac objects in the synchrotron proton blazar model
TL;DR: In this paper, the spectral energy distribution (SED) of electromagnetic radiation and the spectrum of high-energy neutrinos from BL Lac objects in the context of the synchrotron proton blazar model were analyzed.
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KASCADE measurements of energy spectra for elemental groups of cosmic rays: Results and open problems
T. Antoni,W. D. Apel,A.F. Badea,K. Bekk,Alexandru Bercuci,J. Blümer,H. Bozdog,I.M. Brancus,Ashot Chilingarian,Kai Daumiller,P. Doll,R. Engel,J. Engler,F. Feßler,H.J. Gils,R. Glasstetter,Andreas Haungs,D. Heck,Jörg R. Hörandel,Karl-Heinz Kampert,H.O. Klages,Gernot Maier,H. J. Mathes,H.J. Mayer,J. Milke,Marcio Aparecido Muller,R. Obenland,J. Oehlschläger,S. Ostapchenko,M. Petcu,H. Rebel,A. Risse,M. Risse,Markus Roth,G. Schatz,H. Schieler,J. Scholz,T. Thouw,H. Ulrich,J. van Buren,A. Vardanyan,A. Weindl,J. Wochele,J. Zabierowski +43 more
TL;DR: In this paper, a composition analysis of KASCADE air shower data is performed by means of unfolding the two-dimensional frequency spectrum of electron and muon numbers, and the analysis is the determination of energy spectra for elemental groups representing the chemical composition of primary cosmic rays.
Journal ArticleDOI
BL Lac Objects in the Synchrotron Proton Blazar Model
TL;DR: In this paper, the spectral energy distribution (SED) of electromagnetic radiation and the spectrum of high energy neutrinos from BL Lac objects in the context of the Synchrotron Proton Blazar Model were investigated.
Journal ArticleDOI
Neutrinos from propagation of ultrahigh energy protons
R. Engel,D. Seckel,Todor Stanev +2 more
TL;DR: In this article, the production of neutrinos during propagation of ultra-high energy cosmic rays, as may be produced in astrophysical sources, is investigated and compared to the Waxman-Bahcall limit on source neutrino production.
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Monte Carlo simulations of photohadronic processes in astrophysics
TL;DR: In this paper, a new Monte Carlo program for photohadronic interactions of relativistic nucleons with an ambient photon radiation field is presented, which can also be used for radiation and background studies at high energy colliders such as LEP2 and HERA, as well as for simulations of photon induced air showers.