Nucleosynthesis inside Gamma-Ray Burst Accretion Disks
arXiv:astro-ph/0405510 · doi:10.1086/423778
Abstract
We investigate nucleosynthesis inside both a gamma-ray burst accretion disk and a wind launched from an inner region of the disk using one-dimensional models of the disk and wind and a nuclear reaction network. Far from a central black hole, the composition of accreting gas is taken to be that of an O-rich layer of a massive star before core collapse. We find that the disk consists of five layers characterized by dominant elements: O16, Si28, Fe54 (and Ni56), He4, and nucleons, and the individual layers shift inward with keeping the overall profiles of compositions as the accretion rate decreases. Ni56 are abundantly ejected through the wind from the inner region of the disk with the electron fraction \simeq 0.5. In addition to iron group, elements heavier than Cu, in particular Cu63 and Zn64, are massively produced through the wind. Various neutron-rich nuclei can be also produced in the wind from neutron-rich regions of the disk, though the estimated yields have large uncertainties.
4 pages, 6 figures - OMEG03 - Int. Symposium on Origin of Matter and Evolution of the Galaxies November 17-19, 2003 RIKEN, Wako, Saitama, Japan
References in corpus (32)
- A very energetic supernova associated with the gamma-ray burst of 29 March 2003
- Astrophysical Reaction Rates From Statistical Model Calculations
- Supernovae, Jets, and Collapsars
- Accretion Models of Gamma-Ray Bursts
- Neutrino trapping and accretion models for Gamma-Ray Bursts
- Tables of Nuclear Cross Sections and Reaction Rates: an Addendum to the Paper "Astrophysical Reaction Rates from Statistical Model Calculations"
- Bipolar Supernova Explosions: Nucleosynthesis & Implication on Abundances in Extremely Metal-Poor Stars
- Observation of X-ray lines from a Gamma-Ray Burst (GRB991216): Evidence of Moving Ejecta from the Progenitor
- Can neutrino-cooled accretion disk be an origin of gamma-ray bursts?
- Nuclear Composition of Gamma-Ray Burst Fireballs
- A Systematic Analysis of Supernova Light in Gamma-Ray Burst Afterglows
- A Two-Component Model for the Light Curves of Hypernovae
- Discovery of a redshifted Iron K-line in the X-ray afterglow of GRB 000214
- Axisymmetric MHD simulations of the collapsar model for gamma-ray bursts
- The Origin of the Heavy Elements: Recent Progress in the Understanding of the r-Process
- Nucleosynthesis in Gamma Ray Burst Accretion Disks
- On the optical and X-ray afterglows of gamma ray bursts
- Nucleosynthesis in Outflows from the Inner Regions of Collapsars
- Neutrinos and Nucleosynthesis in Gamma-Ray Burst Accretion Disks
- General Relativistic Magnetohydrodynamic Simulations of Collapsars: Rotating Black Hole Cases
- The X-ray Afterglows of GRB 020813 and GRB 021004 with Chandra HETGS: Possible Evidence for a Supernova Prior to GRB 020813
- Delayed soft X-ray emission lines in the afterglow of GRB 030227
- Soft X-ray emission lines in the afterglow spectrum of GRB 011211:- a detailed XMM-Newton analysis
- P-Process Nucleosynthesis inside Supernova-Driven Supercritical Accretion Disks
- Explosive Nucleosynthesis Associated with Formation of Jet-induced GRBs in Massive Stars
- Can a Large Neutron Excess Help Solve the Baryon Loading Problem in Gamma-Ray Burst Fireballs?
- Neutrino-Driven Explosions in GRBs and Hypernovae
- Nucleosynthesis in gamma-ray bursts outflows
- Statistical Re-examination of Reported Emission Lines in the X-ray Afterglow of GRB 011211
- Light Element Synthesis in High Entropy Relativistic Flows Associated with Gamma Ray Bursts
- Baryonic pollution in gamma-ray bursts: the case of a magnetically driven wind emitted from a disk orbiting a stellar mass black hole
- Nucleosynthesis in Baryon-Rich Outflows Associated With Gamma-Ray Bursts
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- The r-process of stellar nucleosynthesis: Astrophysics and nuclear physics achievements and mysteries
- Origin of the Heaviest Elements: the Rapid Neutron-Capture Process
- Neutrino-induced nucleosynthesis of A>64 nuclei: The nu p-process
- Neutrino-Dominated Accretion and Supernovae
- HE1327-2326, an unevolved star with [Fe/H]<-5.0. I. A Comprehensive Abundance Analysis
- Nucleosynthesis in the Outflow from Gamma Ray Burst Accretion Disks
- Development of General Relativistic Magnetohydrodynamic Code and its Application to Central Engine of Long Gamma-Ray Bursts
- Nucleosynthesis in Magnetically Driven Jets from Collapsars
- Sensitivity of r-Process Nucleosynthesis to Light-Element Nuclear Reactions
- Heavy element nucleosynthesis in a collapsar
- Magnetohydrodynamic Simulations of A Rotating Massive Star Collapsing to A Black Hole
- Neutrino Interactions in the Outflow from Gamma-Ray Burst Accretion Disks
- Post-shock-revival evolutions in the neutrino-heating mechanism of core-collapse supernovae
- Heavy Element Production in Inhomogeneous Big Bang Nucleosynthesis
- Self-gravity in neutrino-dominated accretion disks
- Nucleosynthesis of elements in gamma ray bursts engines
- The r-process nucleosynthesis in the outflows from short GRB accretion disks
- Microphysics in the gamma ray burst central engine
- Electron Positron Capture Rates and the Steady State Equilibrium Condition for Electron-Positron Plasma with Nucleons
- Explosive nucleosynthesis in the neutrino-driven aspherical supernova explosion of a non-rotating 15 star with solar metallicity
- Big-Bang nucleosynthyesis: constraints on nuclear reaction rates, neutrino degeneracy, inhomogeneous and Brans-Dicke models
- Magnetically-Driven Neutron-Rich Ejecta Unleashed: Global 3D Neutrino-General Relativistic Magnetohydrodynamic Simulations of Collapsars Probe the Conditions for r-process Nucleosynthesis
- Nucleosynthesis in the outflows associated with accretion disks of Type II collapsars
- Structure and Nuclear Composition of General Relativistic, Magnetohydrodynamic Outflows from Neutrino-Cooled Disks
- Outflow-Driven Transients from the Birth of Binary Black Holes I: Tidally-Locked Secondary Supernovae
- Nucleosynthesis in advective disc and outflow: possible explanation for overabundances in winds from X-ray binaries
- How Do Nuclear Isomers Influence the Gamma-Ray Bursts in Binary Neutron Star Mergers?