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LIGO-Virgo finds mystery object in gap between neutron stars and black holes（图）
LIGO-Virgo mystery object gap between neutro holes
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2020/7/3
When the most massive stars die, they collapse under their own gravity and leave behind black holes. When stars that are a bit less massive die, they explode in supernovas and leave behind dense, dead...
LIGO and Virgo make first detection of gravitational waves produced by colliding neutron stars（图）
LIGO Virgo first detection gravitational waves produced colliding neutron stars
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2017/10/26
For the first time, scientists have directly detected gravitational waves -- ripples in space-time -- in addition to light from the spectacular collision of two neutron stars. This marks the first tim...
First Observations Of Merging Neutron Stars Mark A New Era In Astronomy（图）
First Observations Merging Neutron Stars Mark New Era Astronomy
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2017/10/26
Two months ago, the Advanced Laser Interferometer Gravitational-Wave Observatory (LIGO) notified astronomers around the world of the possible detection of gravitational waves from the merger of two ne...
Neutron Stars Strike Back at Black Holes in Jet Contest
Neutron Stars Strike Back Black Holes Jet Contest
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2015/8/13
Some neutron stars may rival black holes in their ability to accelerate powerful jets of material to nearly the speed of light, astronomers using the Karl G. Jansky Very Large Array (VLA) have discove...
The cluster structure of the inner crust of neutron stars in the Hartree-Fock-Bogoliubov approach
cluster structure inner crust neutron stars approach
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2011/10/17
We analyse how the structure of the inner curst is influenced by the pairing correlations. The inner-crust matter, formed by nuclear clusters immersed in a superfluid neutron gas and ultra-relativisti...
Pasta Structures of Quark-Hadron Phase Transition in Proto-Neutron Stars
Pasta Structures Quark-Hadron Phase Transition
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2011/1/11
We study the quark-hadron mixed phase in proto-neutron stars with the finite-size effects. In the calculations of pasta structures appeared in the mixed phase, the Gibbs conditions require the pressur...
The Moving Hotspots model for kHz QPOs in accreting neutron stars
QPO plasma LMXB accretion
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2010/11/9
3D MHD simulation of accretion onto neutron stars have shown in the last few years that
the footprint (hotspot) of the accretion flow changes with time. Two different kinds of accretion,namely the fu...
Tkachenko modes in rotating neutron stars: the effect of compressibility and implications for pulsar timing noise
Tkachenko modes rotating neutron stars compressibility pulsar timing noise
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2010/11/11
Long wavelength oscillations (Tkachenko waves) of the triangular lattice of quantized vortices in super uid neutron stars have been suggested as one of the possible explanations for the timing noise o...
Resonant radii of kHz quasi-periodic oscillations in Keplerian discs orbiting neutron stars
High Energy Astrophysical Phenomena (astro-ph.HE)
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2010/12/28
Exchange of dominance between twin kHz quasi-periodic oscillations (QPOs) observed in some low-mass-X-ray-binaries (LMXB) suggests the possibility of a resonance between two oscillatory modes.
Cooling rates of neutron stars and the young neutron star in the Cassiopeia A supernova remnant
High Energy Astrophysical Phenomena (astro-ph.HE) Solar and Stellar Astrophysics (astro-ph.SR)
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2010/12/24
We explore the thermal state of the neutron star in the Cassiopeia A supernova remnant using the recent result of Ho & Heinke (Nature, 462, 71 (2009)) that the thermal radiation of this star is well-d...
Ambipolar diffusion in superfluid neutron stars
Solar and Stellar Astrophysics (astro-ph.SR)
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2010/12/24
In this paper we reconsider the problem of magnetic field diffusion in neutron star cores. We model the star as consisting of a mixture of neutrons, protons and electrons, and allow for particle react...
Generalized equation of state for cold superfluid neutron stars
High Energy Astrophysical Phenomena (astro-ph.HE)
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2010/12/24
Mature neutron stars are expected to contain various kinds of superfluids in their interiors. Modeling such stars requires the knowledge of the mutual entrainment couplings between the different conde...
Oscillations and instabilities in neutron stars with poloidal magnetic fields
Solar and Stellar Astrophysics (astro-ph.SR)
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2010/12/23
We study the time evolution of non-axisymmetric linear perturbations of a rotating magnetised neutron star, whose magnetic field is multipolar and purely poloidal. The background stellar configuration...
Model atmospheres of X-ray bursting neutron stars
High Energy Astrophysical Phenomena (astro-ph.HE)
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2010/12/23
We present an extended set of model atmospheres and emergent spectra of X-ray bursting neutron stars in low mass X-ray binaries. Compton scattering is taken into account.
Absorption Features in Spectra of Magnetized Neutron Stars
High Energy Astrophysical Phenomena (astro-ph.HE)
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2010/12/23
The X-ray spectra of some magnetized isolated neutron stars (NSs) show absorption features with equivalent widths (EWs) of 50 - 200 eV, whose nature is not yet well known.