Constraints on the local sources of ultra high-energy cosmic rays

Waxman, Eli; Loeb, Abraham

doi:10.1088/1475-7516/2009/08/026

Cited by 31 publications

(41 citation statements)

References 53 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This implies a power-law distribution of relativistic electrons, with an energy index between p ≈ (2-3), depending on the relative positions of the breaks in its spectra 29 . The observed rate of relativistic SNe in the local universe is consistent with the required rate of X-ray 26 and radio (see Methods) transients accompanying the UHECR accelerators.…”

Section: Energy Budget In Sn 2009bbsupporting

confidence: 76%

“…For a conservative mean delay 8 of 〈τ delay 〉 ≈ 10 5 years, we may receive cosmic rays from any of 4 (or 0.5) × 10 5 possible sources at any point in time. Given the situation, in which a direct association between a detected UHECR and its source is unlikely 25 , the literature in the subject has focused on the constraints 16,26 placed on plausible sources. We have shown in our work that indeed this new class of objects satisfy all these constraints.…”

Section: Radius-magnetic Field Evolutionmentioning

confidence: 99%

See 1 more Smart Citation

Ultra-high-energy cosmic ray acceleration in engine-driven relativistic supernovae

et al. 2011

View full text Add to dashboard Cite

The origin of the highest energy cosmic rays remains an enigma. They offer a window to new physics, including tests of physical laws relevant to their propagation and interactions, at energies unattainable by terrestrial accelerators. They must be accelerated locally, as otherwise background radiations would severely suppress the flux of protons and nuclei, at energies above the Greisen-Zatsepin-Kuzmin (GZK) limit (∼ 60EeV=6 × 10 19 eV). Nearby Gamma Ray Bursts (GRBs), Hypernovae, Active Galactic Nuclei (AGNs) and their flares, have all been suggested and debated as possible sources. A local sub-population of type Ibc supernovae (SNe) with mildly relativistic outflows have been detected as sub-energetic GRBs or X-Ray Flashes (XRFs) and recently as radio afterglows without detected GRB counterparts. We measure the size-magnetic field evolution, baryon loading and energetics, using the observed radio spectra of SN 2009bb. We place such engine-driven SNe above the Hillas line and establish that they can readily explain the post-GZK UHECRs.The highest energy cosmic rays pack such a large amount of energy and have such a low

show abstract

Section: Energy Budget In Sn 2009bbsupporting

confidence: 76%

Section: Radius-magnetic Field Evolutionmentioning

confidence: 99%

Ultra-high-energy cosmic ray acceleration in engine-driven relativistic supernovae

et al. 2011

View full text Add to dashboard Cite

show abstract

“…The existence of tidal disruption flares is likely. However, they are yet to be detected and whether their properties are consistent with the constraints derived above is yet to be determined (see also [104]). …”

Section: G "Suspects" Predictionsmentioning

confidence: 91%

High Energy Cosmic Ray and Neutrino Astronomy

Waxman

2011

Integrated Science &Amp; Technology Program

Self Cite

View full text Add to dashboard Cite

Cosmic-rays with energies exceeding 10 19 eV are referred to as Ultra High Energy Cosmic Rays (UHECRs). The sources of these particles and their acceleration mechanism are unknown, and for many years have been the issue of much debate. The first part of this review describes the main constraints, that are implied by UHECR observations on the properties of candidate UHECR sources, the candidate sources, and the related main open questions. In order to address the challenges of identifying the UHECR sources and of probing the physical mechanisms driving them, a "multi-messenger" approach will most likely be required, combining electromagnetic, cosmic-ray and neutrino observations. The second part of the review is devoted to a discussion of high energy neutrino astronomy. It is shown that detectors, which are currently under construction, are expected to reach the effective mass required for the detection of high energy extra-Galactic neutrino sources, and may therefore play a key role in the near future in resolving the main open questions. The detection of high energy neutrinos from extra-Galactic sources will not only provide constraints on the identity and underlying physics of UHECR sources, but may furthermore provide information on fundamental neutrino properties.

show abstract

“…Since a direct association between a detected UHECR and its source is unlikely (Kashti & Waxman (2008)), most workers have focused on the constraints placed on plausible sources (Hillas (1984), Waxman & Loeb (2009)). Our arguments above show that this new class of objects satisfy all such constraints.…”

Section: Rates Of Engine-driven Supernovaementioning

confidence: 99%

Ultra High Energy Cosmic Rays from Engine-driven Relativistic Supernovae

Chakraborti

2011

Proc. IAU

View full text Add to dashboard Cite

Abstract. The sources of the highest energy cosmic rays remain an enigma half a century after their discovery. Understanding their origin is a crucial step in probing new physics at energies unattainable by terrestrial accelerators. They must be accelerated in the local universe as otherwise interaction with cosmic background radiations would severely deplete the flux of protons and nuclei at energies above the Greisen-Zatsepin-Kuzmin (GZK) limit. Hypernovae, nearby GRBs, AGNs and their flares have all been suggested and debated in the literature as possible sources. Type Ibc supernovae have a local sub-population with mildly relativistic ejecta which are known to be sub-energetic GRBs or X-Ray Flashes for sometime and more recently as those with radio afterglows but without detected GRB counterparts, such as SN 2009bb. In this talk we present the size-magnetic field evolution, baryon loading and energetics of SN 2009bb using its radio spectra obtained with VLA and GMRT. We show that the engine-driven SNe lie above the Hillas line and they can explain the characteristics of post-GZK UHECRs.

show abstract

Constraints on the local sources of ultra high-energy cosmic rays

Cited by 31 publications

References 53 publications

Ultra-high-energy cosmic ray acceleration in engine-driven relativistic supernovae

Ultra-high-energy cosmic ray acceleration in engine-driven relativistic supernovae

High Energy Cosmic Ray and Neutrino Astronomy

Ultra High Energy Cosmic Rays from Engine-driven Relativistic Supernovae

Contact Info

Product

Resources

About