CV
Isaac Legred
Summary
Currently a postdoctoral researcher at the University of Illinois at Urbana-Champaign, working on neutron star astrophysics and gravitational-wave data analysis.
Education
- Ph.D in Physics2025Caltech
- M.S. in Physics2024Caltech
- B.A. in Physics2020Cornell University
Publications
- Implicit correlations within phenomenological parametric models of the neutron star equation of state2022Physical Review DParametric models impose hidden correlations across density scales in neutron star EOS inference.
- Assessing equation of state-independent relations for neutron stars with nonparametric models2024Physical Review DRe-evaluates universal NS relations (e.g. I-Love-Q) using flexible Gaussian-process EOS models.
- Simulating neutron stars with a flexible enthalpy-based equation of state parametrization in SpECTRE2023Physical Review DIntroduces an enthalpy-based EOS parametrization implemented in SpECTRE simulations of neutron stars.
- Phase transition phenomenology with nonparametric representations of the neutron star equation of state2023Physical Review DExplores potential phase-transition behavior in dense matter with nonparametric EOS models.
- Using equation of state constraints to classify low-mass compact binary mergers2024Physical Review DClassifies whether low-mass merger components are NS or BH using tidal/ EOS inference.
- Nonlinear Alfvén-wave dynamics and premerger emission from crustal oscillations in neutron star mergers2024The Astrophysical Journal LettersSimulates Alfvén waves from tidal excitations, predicting electromagnetic precursors before NS mergers.
- The interplay of astrophysics and nuclear physics in determining the properties of neutron stars2025Physical Review DJoint inference of EOS and population differences between Galactic and GW observed neutron stars.
- Nonparametric extensions of nuclear equations of state: probing the breakdown scale of relativistic mean-field theory2025arXivHybrid GP + relativistic mean-field hybrid EOS models to study breakdown scales via future observations.
- Unified nonparametric equation-of-state inference from the neutron-star crust to perturbative-QCD densities2025arXivIntegrates pQCD constraints into a GP-based EOS extending from crust through ultra-high densities.
- Inferring the neutron star equation of state with nuclear-physics informed semiparametric models2025arXivCombines nuclear-physics meta-model at low density with GP at high density to infer NS EOS from multi-messenger data.
- Neutron Stars: Robust Constraints on Dense Matter from Astrophysics2025Ph.D. Dissertation, California Institute of TechnologyPh.D. thesis summarizing Legred’s work using electromagnetic and gravitational-wave observations to constrain dense-matter EOS using nonparametric models.
Teaching
- Teaching experience 12014University 1, DepartmentRole: Undergraduate course
- Teaching experience 22015University 1, DepartmentRole: Workshop
Portfolio
- Portfolio item number 1
