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Observation of a Very Energetic Cosmic Ray Well Beyond the Predicted 2.7 K Cutoff in the Primary Energy Spectrum
Abstract
A very energetic cosmic ray of energy about (1.7-2.6) \ifmmode\times\else\texttimes\fi{} ${10}^{20}$ eV was observed by the Akeno Giant Air Shower Array on 3 December 1993 from the direction of galactic longitude $l=131\ifmmode^\circ\else\textdegree\fi{}$ and galactic latitude $b=\ensuremath{-}41\ifmmode^\circ\else\textdegree\fi{}$ within an error circle of 1.0\ifmmode^\circ\else\textdegree\fi{} radius. If this cosmic ray were a proton; its origin could be extragalactic. However, the distance of the source cannot be much more than a few times 10 Mpc due to the energy loss during its travel from interactions with universal background radiation.
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Citations
Cited by
Cosmological Gamma-Ray Bursts and the Highest Energy Cosmic Rays
Waxman, E. (1995) · Physical Review Letters · doi:10.1103/physrevlett.75.386 · Cited by 802
Neutrinos from propagation of ultrahigh energy protons
Engel, R., Seckel, D., & Stanev, T. (2001) · Physical Review D · doi:10.1103/physrevd.64.093010 · Cited by 414
Ultrahigh Energy Cosmic Rays without Greisen-Zatsepin-Kuzmin Cutoff
Berezinsky, V., Kachelrieß, M., & Vilenkin, A. (1997) · Physical Review Letters · doi:10.1103/physrevlett.79.4302 · Cited by 379
Jacobson, T., Liberati, S., & Mattingly, D. (2003) · Physical Review D · doi:10.1103/physrevd.67.124011 · Cited by 240
On the statistical significance of the GZK feature in the spectrum of ultra-high energy cosmic rays
De Marco, D., Blasi, P., & Olinto, A. V. (2003) · Astroparticle Physics · doi:10.1016/s0927-6505(03)00148-8 · Cited by 100
Metadata
- Authors
- Hayashida, N., Honda, K., Honda, M., Imaizumi, S., Inoue, N., Kadota, K., Kakimoto, F., Kamata, K., Kawaguchi, S., Kawasumi, N., Matsubara, Y., Murakami, K., Nagano, M., Ohoka, H., Takeda, M., Teshima, M., Tsushima, I., Yoshida, S., & Yoshii, H.
- Venue
- Physical Review Letters
- Publisher
- American Physical Society (APS)
- Published
- 1994-12-26
- Volume
- 73
- Issue
- 26
- Pages
- 3491-3494
- ISSN
- 0031-9007 (ISSN-L)
- OpenAlex
- W2064988178
- Cited by
- 298
- References
- 0
- FWCI
- 11.62
- Type
- journal article
- Language
- en
- Open access
- closed
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- The paper
- Hayashida, N., Honda, K., Honda, M., Imaizumi, S., Inoue, N., Kadota, K., Kakimoto, F., Kamata, K., Kawaguchi, S., Kawasumi, N., Matsubara, Y., Murakami, K., Nagano, M., Ohoka, H., Takeda, M., Teshima, M., Tsushima, I., Yoshida, S., & Yoshii, H. (1994). Observation of a Very Energetic Cosmic Ray Well Beyond the Predicted 2.7 K Cutoff in the Primary Energy Spectrum. Physical Review Letters. https://doi.org/10.1103/physrevlett.73.3491
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.
