168 citations · 1.2k across the 29 of their papers we have counts for
29 papers
Constraining twin stars with cold neutron star cooling data
Melissa Mendes, Jan-Erik Christian, Farrukh J. Fattoyev +1
We investigate the influence of a phase transition from hadronic matter to a deconfined quark phase inside a neutron star on its cooling behaviour including the appearance of twin…
What if GW190425 did not produce a black hole promptly?
David Radice, Giacomo Ricigliano, Mukul Bhattacharya +3
It is widely believed that the binary neutron star merger GW190425 produced a black hole promptly upon merger. Motivated by the potential association with the fast radio burst FRB…
Fast neutrino cooling in the accreting neutron star MXB 1659-29
Melissa Mendes, Farrukh J. Fattoyev, Andrew Cumming +1
Modelling of crust heating and cooling across multiple accretion outbursts of the low mass X-ray binary MXB 1659-29 indicates that the neutrino luminosity of the neutron star core…
First Determination of the 27Al Neutron Distribution Radius from a Parity-Violating Electron Scattering Measurement
QWeak Collaboration, D. Androic, D. S. Armstrong +91
We report the first measurement of the parity-violating elastic electron scattering asymmetry on 27Al. The 27Al elastic asymmetry is A_PV = 2.16 +- 0.11 (stat) +- 0.16 (syst) ppm,…
Numerical relativity simulations of prompt collapse mergers: threshold mass and phenomenological constraints on neutron star properties after GW170817
Rahul Kashyap, Abhishek Das, David Radice +10
We determine the threshold mass for prompt (no bounce) black hole formation in equal-mass neutron star (NS) mergers using a new set of 227 numerical relativity simulations. We cons…
Probing dense matter physics with transiently-accreting neutron stars: the case of source MXB 1659-29
Melissa Mendes, Farrukh J. Fattoyev, Andrew Cumming +1
Recent observational data on transiently-accreting neutron stars has unequivocally shown fast-cooling sources, such as in the case of neutron star MXB 1659-29. Previous calculation…
Impact of the neutron-star deformability on equation of state parameters
C. Y. Tsang, M. B. Tsang, Pawel Danielewicz +2
We use a Bayesian inference analysis to explore the sensitivity of Taylor expansion parameters of the nuclear equation of state (EOS) to the neutron star dimensionless tidal deform…
Constraints on Skyrme Equations of State from Doubly Magic Nuclei, Ab-Initio Calculations of Low-Density Neutron Matter, and Neutron Stars
C. Y. Tsang, B. A. Brown, F. J. Fattoyev +2
We use properties of doubly-magic nuclei, ab-initio calculations of low-density neutron matter, and of neutron stars to constrain the parameters of the Skyrme energy-density functi…
Neutron rich matter in heaven and on Earth
J. Piekarewicz, F. J. Fattoyev
Despite a length-scale difference of 18 orders of magnitude, the internal structure of neutron stars and the spatial distribution of neutrons in atomic nuclei are profoundly connec…
Insights on Skyrme parameters from GW170817
C. Y. Tsang, M. B. Tsang, Pawel Danielewicz +2
The binary neutron-star merger event, GW170817, has cast a new light on nuclear physics research. Using a neutron-star model that includes a crust equation of state (EoS), we calcu…
Neutron stars in general relativity and scalar-tensor theory of gravity
F. J. Fattoyev
The masses and radii of neutron stars are discussed in general relativity and scalar-tensor theory of gravity and the differences are compared with the current uncertainties stemmi…
Towards a better understanding of the symmetry energy within neutron stars
C. Y. Tsang, M. B. Tsang, P. Danielewicz +2
The LIGO-Virgo collaboration ground-breaking detection of the binary neutron-star merger event, GW170817, has expanded efforts to understand the Equation of State (EoS) of nuclear…
Laboratory Probes of the Neutron-Matter Equation of State
M. B. Tsang, C. Y. Tsang, P. Danielewicz +2
To relate constraints from nuclear physics to the tidal deformabilities of neutron stars, we construct a neutron star model that accepts input from a large collection of Skyrme den…
Constraining neutron-star equation of state using heavy-ion collisions
C. Y. Tsang, M. B. Tsang, P. Danielewicz +2
The LIGO-Virgo collaboration ground-breaking detection of the binary neutron-star merger event, GW170817, has intensified efforts towards the understanding of the equation of state…
Rapid neutrino cooling in the neutron star MXB 1659-29
Edward F. Brown, Andrew Cumming, Farrukh J. Fattoyev +3
We show that the neutron star in the transient system MXB~1659-29 has a core neutrino luminosity that substantially exceeds that of the modified Urca reactions (i.e., $n+n\to n+p+e…
A lower limit on the heat capacity of the neutron star core
Andrew Cumming, Edward F. Brown, Farrukh J. Fattoyev +3
We show that observations of the core temperature of transiently-accreting neutron stars combined with observations of an accretion outburst give a lower limit to the neutron star…
Small radii of neutron stars as an indication of novel in-medium effects
Wei-Zhou Jiang, Bao-An Li, F. J. Fattoyev
At present, neutron star radii from both observations and model predictions remain very uncertain. Whereas different models can predict a wide range of neutron star radii, it is no…
Quantum Simulations of Nuclei and Nuclear Pasta with the Multi-resolution Adaptive Numerical Environment for Scientific Simulations
I. Sagert, G. I. Fann, F. J. Fattoyev +2
Neutron star and supernova matter at densities just below the nuclear matter saturation density is expected to form a lattice of exotic shapes. These so-called nuclear pasta phases…
Constraints on the symmetry energy from observational probes of the neutron star crust
William G. Newton, Joshua Hooker, Michael Gearheart +4
A number of observed phenomena associated with individual neutron star systems or neutron star populations find explanations in models in which the neutron star crust plays an impo…
Critical Density and Impact of Resonance Formation in Neutron Stars
Bao-Jun Cai, Farrukh J. Fattoyev, Bao-An Li +1
The critical densities and impact of forming \D resonances in neutron stars are investigated within an extended nonlinear relativistic mean-field (RMF) model. The critical densitie…
Impact of the equation-of-state -- gravity degeneracy on constraining the nuclear symmetry energy from astrophysical observables
Xiao-Tao He, F. J. Fattoyev, Bao-An Li +1
There is a degeneracy between the equation of state (EOS) of superdense neutron-rich nuclear matter and the strong-field gravity in understanding properties of neutron stars. While…
Quantifying Correlations Between Isovector Observables and the Density Dependence of Nuclear Symmetry Energy away from Saturation Density
F. J. Fattoyev, W. G. Newton, Bao-An Li
According to the Hugenholtz-Van Hove theorem, the nuclear symmetry energy and its slope at arbitrary densities can be decomposed in terms of the density and momentum…
Using Neutron Star Observations to Determine Crust Thicknesses, Moments of Inertia, and Tidal Deformabilities
Andrew W. Steiner, Stefano Gandolfi, Farrukh J. Fattoyev +1
We perform a systematic assessment of models for the equation of state (EOS) of dense matter in the context of recent neutron star mass and radius measurements to obtain a broad pi…
Neutron-proton effective mass splitting in neutron-rich matter at normal density from analyzing nucleon-nucleus scattering data within an isospin dependent optical model
Xiao-Hua Li, Wen-Jun Guo, Bao-An Li +3
The neutron-proton effective -mass splitting in asymmetric nucleonic matter of isospin asymmetry and normal density is found to be $m^{*}_{n-p}\equiv(m^{*}_{n}-m^{*}_{p})/m=…