Inferring physical properties of stellar collapse by third-generation gravitational-wave detectors

Galactic core-collapse supernovae are among the possible sources of gravitational waves. We investigate ability gravitational-wave observatories to extract properties collapsing progenitor from waves radiated. use simulations that explore a variety core rotation rates and nuclear equations state examine current future determine these using parameter estimation. principal component analysis simulation catalog dominant features waveforms create map between measured waveform physical star. Bayesian inference calculate posterior probabilities for given observation. demonstrate our method on random sample was excluded construction estimate ratio progenitor's rotational kinetic energy potential ($\ensuremath{\beta}$) post bounce oscillation frequency. For at distance galactic center (8.1 kpc) with $\ensuremath{\beta}=0.02$ can $\ensuremath{\beta}$ 90% credible interval 0.004 Advanced LIGO, improving 0.0008 Cosmic Explorer, proposed third-generation detector. if is rotating sufficiently rapidly signal source within Milky Way observed by also frequency protoneutron star precision 5 Hz (90% interval) allowing us constrain equation state. Magellanic Clouds (48.5 Explorer's measure parameters decreases slightly 0.003 11 postbounce interval). Sources in $\ensuremath{\beta}<0.02$ will be too distant LIGO properties.