Maximum mass of a hot neutron star with a quark core

@article{Yazdizadeh2011MaximumMO,
  title={Maximum mass of a hot neutron star with a quark core},
  author={T. Yazdizadeh and Gholam Hossein Bordbar},
  journal={Research in Astronomy and Astrophysics},
  year={2011},
  volume={11},
  pages={471-481}
}
We have considered a hot neutron star with a quark core, a mixed phase of quark-hadron matter, and a hadronic matter crust and have determined the equation of state of the hadronic phase and the quark phase. We have then found the equation of state of the mixed phase under the Gibbs conditions. Finally, we have computed the structure of a hot neutron star with a quark core and compared our results with those of the neutron star without a quark core. For the quark matter calculations, we have… Expand

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References

SHOWING 1-10 OF 26 REFERENCES
Maximum mass of neutron stars with a quark core
Abstract Massive neutron stars (NS) are expected to possess a quark core. While the hadronic side of the NS equation of state (EOS) can be considered well established, the quark side is quiteExpand
Mixed quark-nucleon phase in neutron stars and nuclear symmetry energy
The influence of the nuclear symmetry energy on the formation of a mixed quark-nucleon phase in neutron star cores is studied. We use simple parametrizations of the nuclear matter equation of state,Expand
On the minimum and maximum mass of neutron stars and the delayed collapse
The minimum and maximum mass of protoneutron stars and neutron stars are investigated. The hot dense matter is described by relativistic (including hyperons) and non-relativistic equations of state.Expand
COMPUTATION OF NEUTRON STAR STRUCTURE USING MODERN EQUATION OF STATE
Using the modern equations of state derived from microscopic calculations, we have calculated the neutron star structure. For the neutron star, we have obtained a minimum mass about 0.1 M⊙ which isExpand
Structure of Neutron Star with a Quark Core
The equation of state of de-confined quark matter within the MIT bag model is calculated. This equation of state is used to compute the structure of a neutron star with quark core. It is found thatExpand
White Dwarfs and Neutron Stars
This chapter on the physics of compact objects begins with a section on white dwarfs. It will be shown that the famous Chandrasekhar equation is just the relativistic Thomas–Fermi equation. For whiteExpand
A microscopic equation of state for protoneutron stars
Abstract We study the structure of protoneutron stars within the finite-temperature Brueckner–Bethe–Goldstone many-body theory. If nucleons, hyperons, and leptons are present in the stellar core, weExpand
Observability of neutron stars with quarks
Recent Chandra observations have raised expectations that the objects RX J185635-3754 and 3C58 are either bare strange quark stars or stars with extended quark cores. However, these observations canExpand
Pulsars as Astrophysical Laboratories for Nuclear and Particle Physics
Abstract A forefront of research concerns the exploration of the properties of hadronic matter under extreme conditions of temperature and density, and the determination of the equation of state–theExpand
First-order phase transitions with more than one conserved charge: Consequences for neutron stars.
  • Glendenning
  • Physics, Medicine
  • Physical review. D, Particles and fields
  • 1992
TLDR
It is pointed out that the general results pertain to relativistic nuclear collisions in the so-called stopping or baryon-rich domain where there are three conserved charges (baryon, electric, and strangeness), and impact the expected phase transition from confined hadronic matter to quark matter as regards signals that are supposedly driven by pressure. Expand
...
1
2
3
...