Cosmological Cosmic Rays and the observed Li6 plateau in metal poor halo stars
arXiv:astro-ph/0412426 · doi:10.1086/430401
Abstract
Very recent observations of the Li6 isotope in halo stars reveal a Li6 plateau about 1000 times above the predicted BBN abundance. We calculate the evolution of Li6 versus redshift generated from an initial burst of cosmological cosmic rays (CCRs) up to the formation of the Galaxy. We show that the pregalactic production of the Li6 isotope can account for the Li6 plateau observed in metal poor halo stars without additional over-production of Li7. The derived relation between the amplitude of the CCR energy spectra and the redshift of the initial CCR production puts constraints on the physics and history of the objects, such as pop III stars, responsible for these early cosmic rays. Consequently, we consider the evolution of Li6 in the Galaxy. Since Li6 is also produced in Galactic cosmic ray nucleosynthesis, we argue that halo stars with metallicities between [Fe/H] = -2 and -1, must be somewhat depleted in Li6.
arXiv comment8 pages, 6 figures, version accepted for publication in ApJ
References in corpus (44)
- First Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Determination of Cosmological Parameters
- On the evolution of star forming galaxies
- Cosmological Shock Waves and Their Role in the Large Scale Structure of the Universe
- Updated Big Bang Nucleosynthesis confronted to WMAP observations and to the Abundance of Light Elements
- Cosmic Star Formation History and its Dependence on Galaxy Stellar Mass
- Primordial Lithium and Big Bang Nucleosynthesis
- Primordial Nucleosynthesis for the New Cosmology: Determining Uncertainties and Examining Concordance
- Did Something Decay, Evaporate, or Annihilate during Big Bang Nucleosynthesis?
- Clusters of Galaxies as a Storage Room for Cosmic Rays
- Oxygen abundances in unevolved metal-poor stars from near-UV OH lines
- The Gamma-Ray Background from Blazars: A New Look
- Reappraising the Spite Lithium Plateau: Extremely Thin and Marginally Consistent with WMAP
- Gamma-Rays from Intergalactic Shocks
- Clusters of Galaxies and the Diffuse Gamma Ray Background
- Lithium-6: A Probe of the Early Universe
- Inter-galactic Shock Acceleration and the Cosmic Gamma-ray Background
- Present status of primordial nucleosynthesis after WMAP: results from a new BBN code
- The Guaranteed Gamma-Ray Background
- Neutralinos, Big Bang Nucleosynthesis and 6Li in Low-Metallicity Stars
- Oxygen in the Very Early Galaxy
- High-Energy Cosmic Rays from Gamma-Ray Bursts
- The Evolution of Li6 in Standard Cosmic-Ray Nucleosynthesis
- Solar Neutrino Constraints on the BBN Production of Li
- The Revival of Galactic Cosmic Ray Nucleosynthesis?
- Probing Grand Unified Theories with Cosmic Ray, Gamma-Ray and Neutrino Astrophysics
- Lithium-6 : Evolution from Big Bang to Present
- Primordial Nucleosynthesis and the Abundances of Beryllium and Boron
- Lithium-Beryllium-Boron : Origin and Evolution
- Cosmic Star Formation, Reionization, and Constraints on Global Chemical Evolution
- Cosmic Ray Production of Lithium-6 by Structure Formation Shocks in the Early Milky Way: A Fossil Record of Dissipative Processes during Galaxy Formation
- LiBeB Production by Nuclei and Neutrinos
- EGRET Gamma-Ray Blazars: Luminosity Function and Contribution to the Extragalactic Gamma-Ray Background
- Cosmic Ray History and its Implications for Galactic Magnetic Fields
- Testing Spallation Processes With Beryllium and Boron
- Implications of a new temperature scale for halo dwarfs on LiBeB and chemical evolution
- High redshift evolution of optically and IR-selected galaxies: a comparison with CDM scenarios
- Nucleosynthesis in gamma-ray bursts outflows
- Production of A=6,7 Nuclides in the Alpha + Alpha Reaction and Cosmic Ray Nucleosynthesis
- Did Cosmic Rays Reionize the Intergalactic Medium?
- Acceleration of Cosmic Rays at Large Scale Cosmic Shocks in the Universe
- Neutrino Process Nucleosynthesis and the B/B Ratio
- A low upper-limit on the lithium isotope ratio in HD140283
- Lithium-6 and Gamma Rays: Complementary Constraints on Cosmic-Ray History
- Probing Primordial and Pre-Galactic Lithium with High Velocity Clouds
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- Big Bang Nucleosynthesis: 2015
- Primordial Nucleosynthesis: from precision cosmology to fundamental physics
- Lithium isotopic abundances in metal-poor halo stars
- Formation of the First Stars
- A Bitter Pill: The Primordial Lithium Problem Worsens
- Particle physics catalysis of thermal Big Bang Nucleosynthesis
- Production and evolution of Li, Be and B isotopes in the Galaxy
- The cooling of shock-compressed primordial gas
- Standard big bang nucleosynthesis and primordial CNO Abundances after Planck
- Bound-State Effects on Light-Element Abundances in Gravitino Dark Matter Scenarios
- Effects of Unstable Particles on Light-Element Abundances: Lithium versus Deuterium and He3
- Nucleosynthesis Constraints on a Massive Gravitino in Neutralino Dark Matter Scenarios
- Solving the Cosmic Lithium Problems with Gravitino Dark Matter in the CMSSM
- Big Bang Nucleosynthesis with Bound States of Long-lived Charged Particles
- The 7Be(d,p)2alpha cross section at Big Bang energies and the primordial 7Li abundance
- From First Stars to the Spite Plateau: a Possible Reconciliation of Halo Stars Observations with Predictions from Big Bang Nucleosynthesis
- Permitted Oxygen Abundances and the Temperature Scale of Metal-Poor Turn-Off Stars
- Li Production by the Radiative Decay of Long-Lived Particles
- Impact of Cosmic Rays on Population III Star Formation
- Population III Generated Cosmic Rays and the Production of Li6
- General limit on the relation between abundances of D and Li in big bang nucleosynthesis with nucleon injections
- Is 6-Li in metal-poor halo stars produced in situ by solar-like flares?
- The energetics, evolution, and stellar depletion of Li6 in the early Galaxy
- New results on catalyzed BBN with a long-lived negatively-charged massive particle
- Cosmic Ray production of Beryllium and Boron at high redshift
- Recent results in nuclear astrophysics
- Impacts of Hawking Radiation from Primordial Black Holes in Critical Collapse Model on the Light Element Abundances
- The First Stars: formation under cosmic ray feedback
- Cosmic rays, lithium abundance and excess entropy in galaxy clusters
- Pregalactic LiBeB Production by Supernova Cosmic Rays
- Light Element Production in the Circumstellar Matter of Energetic Type Ic Supernovae
- Cosmological Cosmic Rays: Sharpening the Primordial Lithium Problem
- The puzzling origin of the 6Li plateau
- An Enhanced Cosmological Li6 Abundance as a Potential Signature of Residual Dark Matter Annihilations
- Production of 9Be through alpha-fusion reaction of metal-poor cosmic ray and stellar flare
- Big Bang Nucleosynthesis with long-lived strongly interacting relic particles