A. Archer, W. Benbow, R. Bird, Robert Brose, M. Buchovecky, V. Bugaev, M. P. Connolly, W. Cui, M. K. Daniel, A. Falcone, Q. Feng, J. P. Finley, H. Fleischhack, L. Fortson, A. Furniss, D. Hanna, O. Hervet, J. Holder, G. Hughes, T. B. Humensky, M. Hutten, C. A. Johnson, P. Kaaret, N. Kelley-Hoskins, D. Kieda, M. Krause, F. Krennrich, S. Kumar, M. J. Lang, G. Maier, S. McArthur, P. Moriarty, R. Mukherjee, D. Nieto, R. A. Ong, A. N. Otte, N. Park, A. Petrashyk, Martin Pohl, A. Popkow, Elisa Pueschel, J. Quinn, K. Ragan, P. T. Reynolds, G. T. Richards, E. Roache, C. Rulten, I. Sadeh, J. Tyler, S. P. Wakely, O. M. Weiner, P. Wilcox, Alina Wilhelm, D. A. Williams, S. A. Wissel, B. Zitzer
- We present a new measurement of the energy spectrum of iron nuclei in cosmic rays from 20 TeV to 500 TeV; The measurement makes use of a template-based analysis method, which, for the first time, is applied to the energy reconstruction of iron-induced air showers recorded by the VERITAS array of imaging atmospheric Cherenkov telescopes. The event selection makes use of the direct Cherenkov light which is emitted by charged particles before the first interaction, as well as other parameters related to the shape of the recorded air shower images. The measured spectrum is well described by a power law dF/dE = f(0) center dot (E/E-0)(-gamma) over the full energy range, with gamma = 2.82 +/- 0.30(stat)(-0.27)(+0.24)(syst) and f(0) = (4.82 +/- 0.98(stat)(-2.70)(+2.12)(syst)) x 10(-7) m(-2) s(-1) TeV-1 sr(-1) at E-0 = 50 TeV, with no indication of a cutoff or spectral break. The measured differential flux is compatible with previous results, with improved statistical uncertainty at the highest energies.
MetadatenAuthor details: | A. Archer, W. Benbow, R. Bird, Robert BroseORCiDGND, M. Buchovecky, V. Bugaev, M. P. Connolly, W. Cui, M. K. Daniel, A. Falcone, Q. Feng, J. P. Finley, H. Fleischhack, L. Fortson, A. Furniss, D. Hanna, O. Hervet, J. Holder, G. Hughes, T. B. Humensky, M. Hutten, C. A. Johnson, P. Kaaret, N. Kelley-Hoskins, D. Kieda, M. Krause, F. Krennrich, S. Kumar, M. J. Lang, G. Maier, S. McArthur, P. Moriarty, R. Mukherjee, D. Nieto, R. A. Ong, A. N. Otte, N. Park, A. Petrashyk, Martin PohlORCiDGND, A. Popkow, Elisa PueschelORCiD, J. Quinn, K. Ragan, P. T. Reynolds, G. T. Richards, E. Roache, C. Rulten, I. Sadeh, J. Tyler, S. P. Wakely, O. M. Weiner, P. Wilcox, Alina WilhelmORCiDGND, D. A. Williams, S. A. Wissel, B. Zitzer |
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DOI: | https://doi.org/10.1103/PhysRevD.98.022009 |
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ISSN: | 2470-0010 |
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ISSN: | 2470-0029 |
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Title of parent work (English): | Physical review : D, Particles, fields, gravitation, and cosmology |
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Publisher: | American Physical Society |
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Place of publishing: | College Park |
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Publication type: | Article |
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Language: | English |
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Date of first publication: | 2018/05/31 |
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Publication year: | 2018 |
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Creating corporation: | VERITAS Collaboration |
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Release date: | 2021/10/28 |
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Volume: | 98 |
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Issue: | 2 |
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Number of pages: | 15 |
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Funding institution: | U.S. Department of Energy Office of ScienceUnited States Department of Energy (DOE); U.S. National Science FoundationNational Science Foundation (NSF); Smithsonian InstitutionSmithsonian Institution; NSERC in CanadaNatural Sciences and Engineering Research Council of Canada; Helmholtz Alliance for Astroparticle Physics |
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Organizational units: | Mathematisch-Naturwissenschaftliche Fakultät / Institut für Physik und Astronomie |
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DDC classification: | 5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik |
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Peer review: | Referiert |
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Publishing method: | Open Access / Bronze Open-Access |
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