@article{wolfe_talbot_golomb_2023, title={Accelerating tests of general relativity with gravitational-wave signals using hybrid sampling}, volume={107}, ISSN={["2470-0029"]}, DOI={10.1103/PhysRevD.107.104056}, abstractNote={The Advanced LIGO/Virgo interferometers have observed $\sim 100$ gravitational-wave transients enabling new questions to be answered about relativity, astrophysics, and cosmology. However, many of our current procedures for computing these constraints will not scale well with the increased size of future transient catalogs. We introduce a novel hybrid sampling method in order to more efficiently perform parameterized tests of general relativity with gravitational-wave signals. Applying our method to the binary black hole merger GW150914 and simulated signals we find that our method is approximately an order of magnitude more efficient than the current method with conservative settings for our hybrid analysis. While we have focused on the specific problem of measuring potential deviations from relativity, our method is of much wider applicability to any problem that can be decomposed into a simple and more complex model(s).}, number={10}, journal={PHYSICAL REVIEW D}, author={Wolfe, Noah E. and Talbot, Colm and Golomb, Jacob}, year={2023}, month={May} }
 @article{wolfe_frohlich_miller_torres-forne_cerda-duran_2023, title={Gravitational Wave Eigenfrequencies from Neutrino-driven Core-collapse Supernovae}, volume={954}, ISSN={["1538-4357"]}, url={https://doi.org/10.3847/1538-4357/ace693}, DOI={10.3847/1538-4357/ace693}, abstractNote={Core-collapse supernovae (CCSNe) are predicted to produce gravitational waves (GWs) that may be detectable by Advanced LIGO/Virgo. These GW signals carry information from the heart of these cataclysmic events, where matter reaches nuclear densities. Recent studies have shown that it may be possible to infer the properties of the proto-neutron star (PNS) via GWs generated by hydrodynamic perturbations of the PNS. However, we lack a comprehensive understanding of how these relationships may change with the properties of CCSNe. In this work, we build a self-consistent suite of over 1000 exploding CCSNe from a grid of progenitor masses and metallicities combined with six different nuclear equations of state (EOS). Performing a linear perturbation analysis on each model, we compute the resonant GW frequencies of the PNS, and we motivate a time-agnostic method for identifying characteristic frequencies of the dominant GW emission. From this, we identify two characteristic frequencies, of the early- and late-time signal, that measure the surface gravity of the cold remnant neutron star, and simultaneously constrain the hot nuclear EOS. However, we find that the details of the CCSN model, such as the treatment of gravity or the neutrino transport, and whether it explodes, noticeably change the magnitude and evolution of the PNS eigenfrequencies.}, number={2}, journal={ASTROPHYSICAL JOURNAL}, author={Wolfe, Noah E. and Frohlich, Carla and Miller, Jonah M. and Torres-Forne, Alejandro and Cerda-Duran, Pablo}, year={2023}, month={Sep} }
 @article{meskhi_wolfe_dai_frohlich_miller_wong_vilalta_2022, title={A New Constraint on the Nuclear Equation of State from Statistical Distributions of Compact Remnants of Supernovae}, volume={932}, ISSN={["2041-8213"]}, url={https://doi.org/10.3847/2041-8213/ac7054}, DOI={10.3847/2041-8213/ac7054}, abstractNote={Understanding how matter behaves at the highest densities and temperatures is a major open problem in both nuclear physics and relativistic astrophysics. Our understanding of such behavior is often encapsulated in the so-called high-temperature nuclear equation of state (EOS), which influences compact binary mergers, core-collapse supernovae, and other phenomena. Our focus is on the type (either black hole or neutron star) and mass of the remnant of the core collapse of a massive star. For each six candidates of equations of state, we use a very large suite of spherically symmetric supernova models to generate a sample of synthetic populations of such remnants. We then compare these synthetic populations to the observed remnant population. Our study provides a novel constraint on the high-temperature nuclear EOS and describes which EOS candidates are more or less favored by an information-theoretic metric.}, number={1}, journal={ASTROPHYSICAL JOURNAL LETTERS}, author={Meskhi, Mikhail M. and Wolfe, Noah E. and Dai, Zhenyu and Frohlich, Carla and Miller, Jonah M. and Wong, Raymond K. W. and Vilalta, Ricardo}, year={2022}, month={Jun} }
 @article{ghosh_wolfe_frohlich_2022, title={PUSHing Core-collapse Supernovae to Explosions in Spherical Symmetry. V. Equation of State Dependency of Explosion Properties, Nucleosynthesis Yields, and Compact Remnants}, volume={929}, ISSN={["1538-4357"]}, url={https://doi.org/10.3847/1538-4357/ac4d20}, DOI={10.3847/1538-4357/ac4d20}, abstractNote={In this fifth paper of the series, we use the parameterized, spherically symmetric explosion method PUSH to investigate the impact of eight different nuclear equations of state (EOS). We present and discuss the explosion properties and the detailed nucleosynthesis yields, and predict the remnant (neutron star or black hole) for all our simulations. For this, we perform two sets of simulations. First, a complete study of nonrotating stars from 11 to 40 M ⊙ at three different metallicities using the SFHo EOS; and, second, a suite of simulations for four progenitors (16 M ⊙ at three metallicities and 25 M ⊙ at solar metallicity) for eight different nuclear EOS. We compare our predicted explosion energies and yields to observed supernovae and to the metal-poor star HD 84937. We find EOS-dependent differences in the explosion properties and the nucleosynthesis yields. However, when comparing to observations, these differences are not large enough to rule out any EOS considered in this work.}, number={1}, journal={ASTROPHYSICAL JOURNAL}, publisher={American Astronomical Society}, author={Ghosh, Somdutta and Wolfe, Noah and Frohlich, Carla}, year={2022}, month={Apr} }
 @article{curtis_wolfe_frohlich_miller_wollaeger_ebinger_2021, title={Core-collapse Supernovae: From Neutrino-driven 1D Explosions to Light Curves and Spectra}, volume={921}, ISSN={["1538-4357"]}, url={http://dx.doi.org/10.3847/1538-4357/ac0dc5}, DOI={10.3847/1538-4357/ac0dc5}, abstractNote={We present bolometric and broadband light curves and spectra for a suite of core-collapse supernova models exploded self-consistently in spherical symmetry within the PUSH framework. We analyze broad trends in these light curves and categorize them based on morphology. We find that these morphological categories relate simply to the progenitor radius and mass of the hydrogen envelope. We present a proof-of-concept sensitive-variable analysis, indicating that an important determining factor in the properties of a light curve within a given category is 56Ni mass. We follow spectra from the photospheric to the nebular phase. These spectra show characteristic iron-line blanketing at short wavelengths and Doppler-shifted Fe ii and Ti ii absorption lines. To enable this analysis, we develop a first-of-its-kind pipeline from a massive progenitor model, through a self-consistent explosion in spherical symmetry, to electromagnetic counterparts. This opens the door to more detailed analyses of the collective properties of these observables. We provide a machine-readable database of our light curves and spectra online at go.ncsu.edu/astrodata.}, number={2}, journal={ASTROPHYSICAL JOURNAL}, publisher={American Astronomical Society}, author={Curtis, Sanjana and Wolfe, Noah and Frohlich, Carla and Miller, Jonah M. and Wollaeger, Ryan and Ebinger, Kevin}, year={2021}, month={Nov} }