Thermonuclear fusion in dense stars: Electron screening, conductive cooling, and magnetic field effects
arXiv:1201.2133 · doi:10.1051/0004-6361/201117938
Abstract
We study the plasma correlation effects on nonresonant thermonuclear reactions of carbon and oxygen in the interiors of white dwarfs and liquid envelopes of neutron stars. We examine the effects of electron screening on thermodynamic enhancement of thermonuclear reactions in dense plasmas beyond the linear mixing rule. Using these improved enhancement factors, we calculate carbon and oxygen ignition curves in white dwarfs and neutron stars. The energy balance and ignition conditions in neutron star envelopes are evaluated, taking their detailed thermal structure into account. The result is compared to the simplified "one-zone model," which is routinely used in the literature. We also consider the effect of strong magnetic fields on the ignition curves in the ocean of magnetars.
9 pages, 5 figures. In v2 and v3, typos are corrected in Eqs.(22) and (3), respectively
References in corpus (10)
- The strongest cosmic magnets: Soft Gamma-ray Repeaters and Anomalous X-ray Pulsars
- Coulomb tunneling for fusion reactions in dense matter: Path integral Monte Carlo versus mean field
- Fusion reactions in multicomponent dense matter
- Heating and cooling of magnetars with accreted envelopes
- A simple analytic model for astrophysical S-factors
- Addendum to "Equation of state of classical Coulomb plasma mixtures"
- Thermalisation time and specific heat of neutron stars crust
- Thermonuclear fusion in dense stars: Electron screening, conductive cooling, and magnetic field effects
- Nuclear fusion reaction rates for strongly coupled ionic mixtures
- Corrections to linear mixing in binary ionic mixtures and plasma screening at zero separation
Cited by in corpus (22)
- Neutron stars - cooling and transport
- Thermal luminosities of cooling neutron stars
- Deuterium Burning in Massive Giant Planets and Low-Mass Brown Dwarfs formed by Core-Nucleated Accretion
- Nuclear Physics of the Outer Layers of Accreting Neutron Stars
- Magnetic neutron star cooling and microphysics
- Single Degenerate Models for Type Ia Supernovae Progenitor's Evolution and Nucleosythesis Yields
- Heat blanketing envelopes of neutron stars
- Urca cooling pairs in the neutron star ocean and their effect on superbursts
- Thermonuclear fusion in dense stars: Electron screening, conductive cooling, and magnetic field effects
- The relativistic Feynman-Metropolis-Teller treatment at finite temperatures
- Large collection of astrophysical S-factors and its compact representation
- Magneto-Hydrodynamical Effects on Nuclear Deflagration Fronts in Type Ia Supernovae
- Final Evolution and Delayed Explosions of Spinning White Dwarfs in Single Degenerate Models for Type Ia Supernovae
- An explanation for the gap in the Gaia HRD for M dwarfs
- Electron screening effect on stellar thermonuclear fusion
- Strong plasma screening in thermonuclear reactions: Electron drop model
- Flame fronts in Supernovae Ia and their pulsational stability
- Checking the Salpeter enhancement of nuclear reactions in asymmetric mixtures
- Turbulence model for simulation of the flame front propagation in SNIa
- Constraining Accreted Neutron Star Crust Shallow Heating with the Inferred Depth of Carbon Ignition in X-ray Superbursts
- The Sonora Brown Dwarf Atmosphere and Evolution Models I. Model Description and Application to Cloudless Atmospheres in Rainout Chemical Equilibrium
- A "Hyperburst" in the MAXI J0556-332 Neutron Star: Evidence for a New Type of Thermonuclear Explosion