Light Elements and Cosmic Rays in the Early Galaxy

Abstract

We derive constraints on the cosmic rays responsible for the Be and part of the B observed in stars formed in the early Galaxy: the cosmic rays cannot be accelerated from the ISM; their energy spectrum must be relatively hard (the bulk of the nuclear reactions should occur at $>$30 MeV/nucl); and only 10${}^{49}$ erg/SNII in high metallicity, accelerated particle kinetic energy could suffice to produce the Be and B. The reverse SNII shock could accelerate the particles.

5 pages LATEX using paspconf.sty file with one embedded eps figure using psfig. In press, Proc. Goddard High Resolution Spectrograph Symposium, PASP, 1997

References in corpus (8)

• Galactic Chemical Evolution: Hydrogen Through Zinc
• Galactic Cosmic Rays from Supernova Remnants (I) - a Cosmic Ray Composition controlled by Volatility and Mass-to-Charge Ratio
• LiBeB Production by Nuclei and Neutrinos
• On the significance of population II Li6 abundances
• Gamma Ray Lines from the Orion Complex
• Cosmic Ray Models for Early Galactic Lithium, Beryllium, and Boron Production
• Nuclear and Gamma-ray Production by Supernova Ejecta
• Implications of a High Population II B/Be Ratio

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• On the Origin of the Iron K Line in the Spectrum of the Galactic X-ray Background
• The Evolution of Li6 in Standard Cosmic-Ray Nucleosynthesis
• The Revival of Galactic Cosmic Ray Nucleosynthesis?
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• Nucleosynthesis of Light Elements and Heavy r-Process Elements through the nu-Process in Supernova Explosion
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• An Ultra-High-Resolution Survey of the Interstellar ^7Li-to-^6Li Isotope Ratio in the Solar Neighborhood
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• Cosmic-Ray Hardenings in the Light of AMS-02
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• Effect of Long-lived Strongly Interacting Relic Particles on Big Bang Nucleosynthesis
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• The energetics, evolution, and stellar depletion of Li6 in the early Galaxy
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• Examination of uncertainties in nuclear data for cosmic ray physics with the AMS experiment
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• Lithium-6 from Solar Flares
• Cosmic Ray Origin: Lessons from Ultra-High-Energy Cosmic Rays and the Galactic/Extragalactic Transition
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• Boron Synthesis in Type Ic Supernovae
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• Pregalactic LiBeB Production by Supernova Cosmic Rays
• Limits on the Boron Isotopic Ratio in HD 76932
• The importance of Fe fragmentation for LiBeB analyses: Is a Li primary source needed to explain AMS-02 data?
• Cosmic Lithium-Beryllium-Boron Story
• Resonant annihilation of long-lived massive colored particles through hadronic collisions
• Testing two nuclear physics approximations used in the standard leaky box model for the spallogenic production of LiBeB
• A stochastic simulation of the propagation of Galactic cosmic rays reflecting the discreteness of cosmic ray sources. Age and path length distribution
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• Spallogenic Light Elements and Cosmic-Ray Origin
• The 7Li/6Li Isotope Ratio Near the Supernova Remnant IC 443
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• Parsec-scale Variations in the 7Li/6Li Isotope Ratio Toward IC 348 and the Per OB 2 Association
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• The contribution of nearby supernova remnants on the cosmic ray flux at Earth
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• Origin of cosmic rays and evolution of spallogenic nuclides Li, Be and B
• Big Bang Nucleosynthesis with long-lived strongly interacting relic particles