342 citations · 987 across the 14 of their papers we have counts for
14 papers
Bridging relativistic jets from black hole scales to long-term electromagnetic radiation distances: A moving-mesh general relativistic hydrodynamics code with the HLLC Riemann solver
Xiaoyi Xie, Alan Tsz-Lok Lam
Relativistic jets accompany the collapse of massive stars, the merger of compact objects, or the accretion of gas in active galactic nuclei. They carry information about the centra…
Instabilities in neutron-star postmerger remnants
Xiaoyi Xie, Ian Hawke, Andrea Passamonti +1
Using nonlinear, fully relativistic, simulations we investigate the dynamics and gravitational-wave signature associated with instabilities in neutron star postmerger remnants. For…
Two years of non-thermal emission from the binary neutron star merger GW170817: rapid fading of the jet afterglow and first constraints on the kilonova fastest ejecta
A. Hajela, R. Margutti, K. D. Alexander +27
We present Chandra and VLA observations of GW170817 at ~521-743 days post merger, and a homogeneous analysis of the entire Chandra data set. We find that the late-time non-thermal…
Off-axis synchrotron light curves from full-time-domain moving-mesh simulations of jets from massive stars
Xiaoyi Xie, Andrew MacFadyen
We present full-time-domain, moving-mesh, relativistic hydrodynamic simulations of jets launched from the center of a massive progenitor star and compute the resulting synchrotron…
A Strange EUV Emission: Scattered Continuum in the Lymann Limit Absorption Edge toward the Quasar SDSS J125903.26+621211.5?
Xiang Pan, Shaohua Zhang, Hongyan Zhou +5
We identified a peculiar proximate sub-damped Lya absorption system (sub-DLA) at z=3.234 with a neutral hydrogen column density of toward the…
Radio sky maps of the GRB 170817A afterglow from simulations
Jonathan Zrake, Xiaoyi Xie, Andrew MacFadyen
We present synthetic radio images of the GRB170817A afterglow, computed from moving-mesh hydrodynamic simulations of binary neutron star merger outflows. Having expanded for nearly…
A Decline in the X-ray through Radio Emission from GW170817 Continues to Support an Off-Axis Structured Jet
K. D. Alexander, R. Margutti, P. K. Blanchard +17
We present new observations of the binary neutron star merger GW170817 at days post-merger, at radio (Karl G. Jansky Very Large Array; VLA), X-ray (Chandra X-ra…
An Intercomparison Study of Two Proximate Damped Ly Systems with Residual Flux upon the Ly Absorption Trough toward Quasars
Xiaoyi Xie, Hongyan Zhou, Xiang Pan +6
In this paper, we present an intercomparison study of two quasars, SDSS J145618.32+340037.2 and SDSS J215331.50-025514.1, which have proximate damped Lya systems (PDLAs) with resid…
Numerical simulations of the jet dynamics and synchrotron radiation of binary neutron star merger event GW170817/GRB170817A
Xiaoyi Xie, Jonathan Zrake, Andrew MacFadyen
We present numerical simulations of energetic flows propagating through the debris cloud of a binary neutron star (BNS) merger. Starting from the scale of the central engine, we us…
The Binary Neutron Star event LIGO/VIRGO GW170817 a hundred and sixty days after merger: synchrotron emission across the electromagnetic spectrum
Raffaella Margutti, K. D. Alexander, X. Xie +17
We report deep Chandra, HST and VLA observations of the binary neutron star event GW170817 at d after merger. These observations show that GW170817 has been steadily bright…
The luminosity dependence of quasar UV continuum slope: dust extinction scenario
Xiaoyi Xie, Zhengyi Shao, Shiyin Shen +2
We investigate the UV continuum slope of a large quasar sample from SDSS DR7. By using specific continuum windows, we build two samples at lower () and higher ($1.…
An Apparent Redshift Dependence of Quasar Continuum: Implication for Cosmic Dust Extinction?
Xiaoyi Xie, Shiyin Shen, Zhengyi Shao +1
We investigate the luminosity and redshift dependence of the quasar continuum by means of composite spectrum using a large non-BAL radio-quiet quasar sample drawn from the Sloan Di…
Finite size analysis of zero-temperature jamming transition under applied shear stress
Hao Liu, Xiaoyi Xie, Ning Xu
By finding local minima of an enthalpy-like energy, we can generate jammed packings of frictionless spheres under constant shear stress and obtain the yield stress by sam…
The Stokes-Einstein Relation at Moderate Schmidt Number
F. Balboa Usabiaga, X. Xie, R. Delgado-Buscalioni +1
The Stokes-Einstein relation for the self-diffusion coefficient of a spherical particle suspended in an incompressible fluid is an asymptotic result in the limit of large Schmidt n…