High-energy cosmic-ray nuclei from high- and low-luminosity gamma-ray bursts and implications for multimessenger astronomy

By Kohta Murase, K. Ioka, S. Nagataki, Takashi Nakamura. 2008

141 citations recorded by the source corpus.

Gamma-ray bursts (GRBs) are one of the candidates of ultrahigh-energy ($\ensuremath{\gtrsim}{10}^{18.5}\text{ }\text{ }\mathrm{eV}$) cosmic-ray (UHECR) sources. We investigate high-energy cosmic-ray acceleration including heavy nuclei in GRBs by using Geant 4, and discuss its various implications, taking both high-luminosity (HL) and low-luminosity (LL) GRBs into account. This is because LL GRBs may also make a significant contribution to the observed UHECR flux if they form a distinct population. We show that not only protons, but also heavier nuclei can be accelerated up to ultrahigh energies in the internal, (external) reverse, and forward shock models. We also show that the condition for ultrahigh-energy heavy nuclei such as iron to survive is almost the same as that for $\ensuremath{\sim}\mathrm{TeV}$ gamma rays to escape from the source and for high-energy neutrinos not to be much produced. The multimessenger astronomy by neutrino and GeV-TeV gamma-ray telescopes such as IceCube and KM3Net, GLAST and MAGIC will be important to see whether GRBs can be accelerators of ultrahigh-energy heavy nuclei. We also demonstrate expected spectra of high-energy neutrinos and gamma rays, and discuss their detectabilities. In addition, we discuss implications of the GRB-UHECR hypothesis. We point out, since the number densities of HL GRBs and LL GRBs are quite different, its determination by UHECR observations is also important.

Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/0e7ad9ae3dcf136066e59ac86ba67b53d62dae24

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Astronomy and Astrophysics

1. Bing Zhang
2. Kohta Murase
3. Huirong Yan
4. Angela V. Olinto
5. Kumiko Kotera
6. J. Rachen
7. A. V. Vliet
8. H. Takami

In Nuclear and High Energy Physics

1. Bing Zhang
2. Kumiko Kotera
3. Angela V. Olinto
4. Kohta Murase
5. J. Rachen
6. A. V. Vliet
7. H. Takami
8. Huirong Yan

Citations in the corpus

• Cosmic-ray energy spectrum and composition up to the ankle - the case for a second Galactic component (2016, background): “The physical motivation for this scenario is the acceleration of heavy nuclei at external/internal shocks in gamma ray bursts (Murase et al. 2008; Globus et al. 2015b), or in tidal disruption events (Farrar & Gruzinov 2009).”
• BLAZARS AS ULTRA-HIGH-ENERGY COSMIC-RAY SOURCES: IMPLICATIONS FOR TeV GAMMA-RAY OBSERVATIONS (2011, background): “…dipole resonance (GDR) cross section as σAγ ∼ σGDRδ(ε − ε̄GDR)∆ε̄GDR, for a sufficiently soft photon spectrum (withα& 1), we get (Murase & Beacom 2010a, see also Murase et al. 2008a for the non-GDR effect) τAγ ≈ t ′var t ′Aγ ≃ 2σGDR 1+α ∆ε̄GDR ε̄GDR Lsγ 4πδ4tvarc2εs ( EA EbA )α−1 , (7) wheret…”
• THE INTERNAL-COLLISION-INDUCED MAGNETIC RECONNECTION AND TURBULENCE (ICMART) MODEL OF GAMMA-RAY BURSTS (2010, background): “If they are matter-dominated, they can be important contributors to diffuse high energy neutrinos and UHECRs (Gupta and Zhang 2007; Murase et al. 2006, 2008).”
• The Astrophysics of Ultrahigh-Energy Cosmic Rays (2011, background): “These objects have been examined by various authors as possible sources of UHECRs (Waxman 1995, 2001; Vietri 1995; Gialis & Pelletier 2003; Murase et al. 2006, 2008b).”
• Open Questions in Cosmic-Ray Research at Ultrahigh Energies (2019, unknown): “For AGN, the longest timescale which may be associated to particle acceleration is the jet activity timescale, estimated to be of the order 300 Myr (Wykes et al., 2013).”