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The Acceleration of Ultra--High-Energy Cosmic Rays in Gamma-Ray Bursts
Open accessAbstract
Ultra-high-energy cosmic rays (UHECRs) are roughly isotropic and attain very large energies, E ≳ 3 × 1020 eV. Conventional models fail to explain both facts. I show here that acceleration of UHECRs in gamma-ray bursts (GRBs) satisfies both observational constraints. Using the Mészáros & Rees model (see their recent work) of GRBs as due to hyperrelativistic shocks, I show that the highest energies that can be attained thusly are E ≌ 1020 θ-5/3/ n15/6 eV, explaining the energy of the Bird et al. event (described in their recent work) even without beaming. The traditional photopion catastrophe affecting UHECR acceleration in active galactic nuclei is circumvented. An order of magnitude estimate shows that the total energy flux of UHECRs at Earth is also correctly reproduced. A test of the model based upon the UHECRs' distribution upon the plane of the sky is briefly discussed.
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Cited by
High energy neutrinos from astrophysical sources: An upper bound
Waxman, E., & Bahcall, J. (1998) · Physical Review D · doi:10.1103/physrevd.59.023002 · Cited by 852
The Astrophysics of Ultrahigh-Energy Cosmic Rays
Kotera, K., & Olinto, A. V. (2011) · Annual Review of Astronomy and Astrophysics · doi:10.1146/annurev-astro-081710-102620 · Cited by 470
Cosmic physics: the high energy frontier
Stecker, F. W. (2003) · Journal of Physics G: Nuclear and Particle Physics · doi:10.1088/0954-3899/29/10/201 · Cited by 48
Metadata
- Authors
- Vietri, M.
- Venue
- The Astrophysical Journal
- Publisher
- American Astronomical Society
- Published
- 1995-11
- Volume
- 453
- Pages
- 883
- ISSN
- 0004-637X (ISSN-L)
- 1538-4357
- OpenAlex
- W1992960149
- Cited by
- 564
- References
- 0
- FWCI
- 9.11
- Type
- journal article
- Language
- en
- Open access
- green
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- Vietri, M. (1995). The Acceleration of Ultra--High-Energy Cosmic Rays in Gamma-Ray Bursts. The Astrophysical Journal. https://doi.org/10.1086/176448
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Bibliographic data: Semantic Scholar, OpenAlex, Crossref.
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.
