Present Members

  • Matthew Duez
    Principle Investigator

  • Courtney Cadenhead
    Research: As an undergraduate, Courtney studied electromagnetic energy fluxes in SpEC simulations. As a masters degree student, she is investigating dynamo action in the black hole accretion disks we simulate, in particular the question of how to model 3D magnetorotational turbulence in axisymmetry in a covariant and well-motivated way.
    Papers:
    • Axisymmetric Hydrodynamics in Numerical Relativity Using a Multipatch Method by Jesse et al, Classical and Quantum Gravity 37 23501 (2020), arXiv:2005.01848
  • Nishad Muhammed
    Research: Nishad is preparing to study the stability of certain types of hypermassive stars.
    Papers:

Past Members

  • Milad Haddadi
    Degree: PhD 2020
    Research: Milad used 2D simulations to continue SpEC simulations for the first time for multiple seconds after merger, long enough to study the late-time disk evolution and outflows.
    Papers:
    • A comparison of momentum transport models for numerical relativity by Duez et al, Phys. Rev. D 102, 104050 (2020), arXiv:2008.05019
    • Axisymmetric Hydrodynamics in Numerical Relativity Using a Multipatch Method by Jesse et al, Classical and Quantum Gravity 37 23501 (2020), arXiv:2005.01848
    • Evolution of the Magnetized, Neutrino-Cooled Accretion Disk in the Aftermath of a Black Hole Neutron Star Binary Merger by Nouri et al, Phys. Rev. D 97, 083014 (2018), arXiv:1710.07423
  • Jerred Jesse
    Degree: PhD 2020 Research: Jerred developed a way to implement axisymmetry in multipatch codes and studied hydrodynamics, magnetohydrodynamics, and neutrino radiation transport in 2D numerical relativity.
    Papers:
    • A comparison of momentum transport models for numerical relativity by Duez et al, Phys. Rev. D 102, 104050 (2020), arXiv:2008.05019
    • Axisymmetric Hydrodynamics in Numerical Relativity Using a Multipatch Method by Jesse et al, Classical and Quantum Gravity 37 23501 (2020), arXiv:2005.01848
    • Elastic Scattering in General Relativistic Ray Tracing for Neutrinos by Deaton et al, Phys. Rev. D 98, 103014 (2018), arXiv:1806.10255
  • Jesus Caro
    Degree: MS thesis 2018 Research: Jesus carried out black hole-neutron star merger simulations to assess the reliability of waveform templates available to LIGO when used to ascertain neutron star properties.
    Papers:
    • Gravitational waveforms from SpEC simulations : neutron star-neutron star and low-mass black hole-neutron star binaries by Foucart et al, Phys. Rev. D 99, 044008 (2019), arXiv:1812.06988
    • Systematic effects from black hole-neutron star waveform model uncertainties on the neutron star equation of state by Chakravarti et al, Phys. Rev. D 99, 024049 (2019), arXiv:1809.04349
    • Black hole-neutron star mergers using a survey of finite-temperature equations of state by Brege et al, Phys. Rev. D 98, 063009 (2018), arXiv:1804.09823
  • Wyatt Brege
    Degree: PhD 2017
    Research: Wyatt carried out a survey of black hole-neutron star simulations with different nuclear-theory based, finite-temperature equations of state, looking for signatures of the equation of state on the merger dynamics and immediate post-merger state.
    Papers:
    • Systematic effects from black hole-neutron star waveform model uncertainties on the neutron star equation of state by Chakravarti et al, Phys. Rev. D 99, 024049 (2019), arXiv:1809.04349
    • Black hole-neutron star mergers using a survey of finite-temperature equations of state by Brege et al, Phys. Rev. D 98, 063009 (2018), arXiv:1804.09823
    • Dynamical ejecta from precessing neutron star-black hole mergers with a hot, nuclear-theory based equation of state by Foucart et al, Classical and Quantum Gravity, 34, 4 (2017), arXiv:1611.01159
  • Fatemeh Nouri Degree: PhD 2016
    Research: Fatemeh simulated the effect of magnetic fields on neutrino-cooled post-merger disks, developing an innovative study of the thermal evolution. She has continued to work with the WSU group as a postdoc, studying tidal excitation of neutron star modes in binaries.
    Papers:
    • Nonlinear mode-tide coupling in coalescing binary neutron stars with relativistic corrections by Nouri et al, under review, arXiv:2107.13339
    • Evolution of the Magnetized, Neutrino-Cooled Accretion Disk in the Aftermath of a Black Hole Neutron Star Binary Merger by Nouri et al, Phys. Rev. D 97, 083014 (2018), arXiv:1710.07423
    • Magnetic effects on the low-T/W instability in differentially rotating neutron stars by Muhlberger et al, Phys. Rev. D 90, 104014 (2014), arXiv:1405.2144

  • Veronica Ruiz
    Degree: MS non-thesis 2015
    Research: Veronica worked on black hole-neutron star simulations to study tidal effects on the waveforms.

  • Michael Brett Deaton
    Degree: PhD 2015
    Research: Brett carried out the first numerical relativity simulations of black hole-neutron star mergers to include realistic microphysics, including neutrino cooling. The techniques he developed for evolutions and analysis of outflows continued to be used in subsequent papers. The work he began at WSU on studying distributions of neutrinos from binary mergers using ray tracing was completed and published during his postdoc.
    Papers:
    • Elastic Scattering in General Relativistic Ray Tracing for Neutrinos by Deaton et al, Phys. Rev. D 98, 103014 (2018), arXiv:1806.10255
    • Black hole-neutron star mergers using a survey of finite-temperature equations of state by Brege et al, Phys. Rev. D 98, 063009 (2018), arXiv:1804.09823
    • Evolution of the Magnetized, Neutrino-Cooled Accretion Disk in the Aftermath of a Black Hole Neutron Star Binary Merger by Nouri et al, Phys. Rev. D 97, 083014 (2018), arXiv:1710.07423
    • Neutron star-black hole mergers with a nuclear equation of state and neutrino cooling: Dependence in the binary parameters by Foucart et al, Phys. Rev. D 90, 024026 (2014), arXiv:1405.1121
    • Black Hole-Neutron Star Mergers with a Hot Nuclear Equation of State: Outflow and Neutrino-Cooled Disk for a Low-Mass, High-Spin Case by Deaton et al, Astrophys. J. 776, 47 (2013), arXiv:1304.3384
    • Black hole-neutron star mergers at realistic mass ratios: Equation of state and spin orientation effects by Foucart et al, Phys. Rev. D 87, 084006 (2013), arXiv:1212.4810