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Neutron star’s X-rays reveal ‘photon metamorphosis’（图）
中子星 X射线 光子
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2023/5/15
A “beautiful effect” predicted by quantum electrodynamics (QED) can explain the puzzling first observations of polarized X-rays emitted by a magnetar – a neutron star featuring a powerful magnetic fie...
Scientists map gusty winds in a far-off neutron star system（图）
中子星系统 阵风图 星系形成
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2023/6/9
An accretion disk is a colossal whirlpool of gas and dust that gathers around a black hole or a neutron star like cotton candy as it pulls in material from a nearby star. As the disk spins, it whips u...
LIGO and Virgo detect neutron star smash-ups（图）
LIGO Virgo neutron star smash-ups
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2019/10/30
On April 25, NSF's Laser Interferometer Gravitational-Wave Observatory (LIGO) and the European-based Virgo detector registered gravitational waves from what appears to be a crash between two neutron s...
Radio Observations Point to Likely Explanation for Neutron-Star Merger Phenomena（图）
Radio Observations Point Likely Explanation Neutron-Star Merger
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2018/1/10
Three months of observations with the National Science Foundation’s Karl G. Jansky Very Large Array (VLA) have allowed astronomers to zero in on the most likely explanation for what happened in the af...
Radio “Eyes” Unlocking Secrets of Neutron-Star Collision（图）
Radio Eyes Unlocking Neutron-Star Collision
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2017/10/26
When a pair of superdense neutron stars collided and potentially formed a black hole in a galaxy 130 million light-years from Earth, they unleashed not only a train of gravitational waves but also an ...
Discovery of the neutron star spin and orbital period from the Be/X-ray binary IGR J05414-6858 in the LMC
Discovery neutron star spin orbital the Be/X-ray binary IGR J05414-6858 the LMC
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2012/2/23
The number of known Be/X-ray binaries in the Large Magellanic Cloud is small compared to the observed population of the Galaxy or the Small Magellanic Cloud. The discovery of a system in outburst prov...
Oscillations of relativistic axisymmetric tori and implications for modelling kHz-QPOs in neutron-star X-ray binaries
X-rays: binaries – relativity – stars: neutron
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2011/10/8
We perform a global linear perturbative analysis, and investigate the oscillation properties of relativistic, non-selfgravitating tori orbiting around neutron stars in the slow rotation limit approxim...
R-Process Nucleosynthesis in Dynamically Ejected Matter of Neutron Star Mergers
Nucleosynthesis Dynamically Ejected Matter Neutron Star Mergers
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2011/9/28
Although the rapid neutron-capture process, or r-process, is fundamentally important for explaining the origin of approximately half of the stable nuclei with A > 60, the astrophysical site of this pr...
Measuring a cosmological distance-redshift relationship using only gravitational wave observations of binary neutron star coalescences
neutron stars gravitational waves cosmology
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2011/10/14
Detection of gravitational waves from the inspiral phase of binary neutron star coalescence will allow us to measure the effects of the tidal coupling in such systems. These effects will be measurable...
Comparing the Accretion Disk Evolution of Black Hole and Neutron Star X-ray Binaries from Low to Super-Eddington Luminosity
Accretion Disk Evolution Neutron Star X-ray Binaries Super-Eddington Luminosity
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2011/10/21
Low-mass X-ray binaries (LMXBs) are systems in which a low-mass companion transfers mass via Roche-lobe overflow onto a black hole (BH) or a weakly magnetized neutron star (NS). It is believed that bo...
Collective excitations in the neutron star inner crust
Collective excitations in the neutron star inner crust
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2011/10/14
We study the spectrum of collective excitations in the inhomogeneous phases in the neutron star inner crust within a superfluid hydrodynamics approach. Our aim is to describe the whole range of wavele...
Proton fraction in the inner neutron-star crust
Proton fraction inner neutron-star crust
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2011/10/18
Monte Carlo simulations of neutron-rich matter of relevance to the inner neutron-star crust are performed for a system of A=5,000 nucleons. To determine the proton fraction in the inner crust, numeric...
Shapiro delay measurement of a two solar mass neutron star
Shapiro delay measurement solar mass neutron star
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2011/1/11
Neutron stars are composed of the densest form of matter known to exist in our universe, and thus provide a unique laboratory for exploring the properties of cold matter at super-nuclear density. Meas...
Alfven seismic vibrations of crustal solid-state plasma in quaking paramagnetic neutron star
Alfven seismic vibrations paramagnetic neutron star
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2010/11/11
Magneto-solid-mechanical model of two-component, core-crust, paramagnetic neutron star responding to quake-induced perturbation by differentially rotational, torsional, oscillations of crustal electro...
Neutron star observations with WFXT
Neutron stars – X-rays
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2010/11/10
The Wide-Field X-ray Telescope (WFXT) is a proposed NASA mission dedicated to performing surveys of the sky in the soft X-ray band (0.3 − 6 keV).The key characteristics of this missions are a co...