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Hybrid stars that masquerade as neutron stars
We show that a hybrid (nuclear+quark matter) star can have a mass-radius relationship very similar to that predicted for a star made of purely nucleonic matter. We show this for a generic
Color superconductivity in dense quark matter
Matter at high density and low temperature is expected to be a color superconductor, which is a degenerate Fermi gas of quarks with a condensate of Cooper pairs near the Fermi surface that induces
Generic conditions for stable hybrid stars
We study the mass-radius curve of hybrid stars, assuming a single first-order phase transition between nuclear and quark matter, with a sharp interface between the quark matter core and nuclear
The Massive Pulsar PSR J1614?2230: Linking Quantum Chromodynamics, Gamma-ray Bursts, and Gravitational Wave Astronomy
The recent measurement of the Shapiro delay in the radio pulsar PSR J1614–2230 yielded a mass of 1.97 ± 0.04 M ☉, making it the most massive pulsar known to date. Its mass is high enough that, even
QCD and strongly coupled gauge theories: challenges and perspectives
In the course of the work, a perspective on the many research streams which flow into and out of QCD is offered, as well as a vision for future developments.
Viscous Dissipation and Heat Conduction in Binary Neutron-Star Mergers.
It is found that the bulk viscosity takes values close to its resonant maximum in a typical merger, motivating a more careful assessment of the role of bulk viscous dissipation in the gravitational-wave signal from merging neutron stars.
What the timing of millisecond pulsars can teach us about their interior.
It is demonstrated via a detailed analysis of pulsar evolution that precise pulsar timing data can constrain the star's composition, through unstable global oscillations whose damping is determined by microscopic properties of the interior.
Viscous damping of r-modes: Large amplitude saturation
We analyze the viscous damping of r-mode oscillations of compact stars, taking into account non-linear viscous effects in the large-amplitude regime. The qualitatively different cases of hadronic