# On the generation of UHECRs in GRBs: a reappraisal

@article{Vietri2003OnTG,
title={On the generation of UHECRs in GRBs: a reappraisal},
author={Mario Vietri and Daniel De Marco and Dafne Guetta},
journal={arXiv: Astrophysics},
year={2003}
}
• Published 7 February 2003
• Physics
• arXiv: Astrophysics
We re-examine critically the arguments raised against the theory that Ultra High Energy Cosmic Rays observed at Earth are produced in Gamma Ray Bursts. These include the limitations to the highest energy attainable by protons around the bursts' shocks, the spectral slope at the highest energies, the total energy released in non--thermal particles, the occurrence of doublets and triplets in the data reported by AGASA. We show that, to within the uncertainties in our current knowledge of GRBs…
32 Citations

## Figures and Tables from this paper

Cosmic γ-ray bursts: Observations and modeling
It is now commonly accepted that cosmic γ-ray bursts (GRBs) are of cosmological origin. This conclusion is based on the statistical analysis of GRBs and the measurements of line redshifts in GRB
Enhanced cosmological GRB rates and implications for cosmogenic neutrinos
• Physics
• 2007
Gamma-ray bursts, which are among the most violent events in the Universe, are one of the few viable candidates to produce ultra high-energy cosmic rays. Recently, observations have revealed that
Which acceleration process for ultra high energy cosmic rays in gamma ray bursts
In this paper, we have made an accurate investigation of proton acceleration in GRBs and we have predicted a possible signature of cosmic rays, in a sufficiently baryon-loaded fireball, via GeV γ-ray
LOWER LIMITS ON ULTRAHIGH-ENERGY COSMIC RAY AND JET POWERS OF TeV BLAZARS
• Physics
• 2012
Lower limits on the power emitted in ultrahigh-energy cosmic rays (UHECRs), which are assumed to be protons with energy 1017-1020 eV, are derived for TeV blazars with the assumption that the observed
Gamma-ray bursts as VHE-UHE sources
Gamma-ray bursts are capable of accelerating cosmic rays up to GZK energies Ep ~ 1020 eV, which can lead to a flux at Earth comparable to that observed by large EAS arrays such as Auger. The
Neutral beam model for the anomalous gamma-ray emission component in GRB 941017
• Physics
• 2004
Gonz\'alez et al. (2003) have reported the discovery of an anomalous radiation component from ~ 1 -- 200 MeV in GRB 941017. This component varies independently of and contains > 3 times the energy
The physics of gamma-ray bursts
Gamma-ray bursts (GRB's), short and intense pulses of low-energy $\ensuremath{\gamma}$ rays, have fascinated astronomers and astrophysicists since their unexpected discovery in the late sixties.
Gamma-ray bursts and magnetars as possible sources of ultrahigh energy cosmic rays: Correlation of cosmic ray event positions with IRAS galaxies
• Physics
• 2004
We use the two-dimensional Kolmogorov-Smirnov (KS) test to study the correlation between the 60 cosmic ray events above 4 × 10 19 eV from the AGASA experiment and the positions of infrared luminous

## References

SHOWING 1-6 OF 6 REFERENCES
Neutron Stars in Supernova Remnants
I briefly summarize some facts and ideas concerning the presence of neutron stars in Supernova remnants. While sources similar to the Crab Nebula require the presence of a central energetic object,
Astrop. Phys
• Astrop. Phys
• 2000
Invited Talk given at the XXIst Texas Symposium
• Invited Talk given at the XXIst Texas Symposium
• 2002
Invited Talk given at the XXIst Texas Symposium, to appear
• Invited Talk given at the XXIst Texas Symposium, to appear
• 2002
Phys. of Fluids
• Phys. of Fluids
• 1976
This preprint was prepared with the AAS L A T E X macros v5
• This preprint was prepared with the AAS L A T E X macros v5