Discriminating same-mass neutron stars and black holes gravitational waveforms

Gravitational wave-forms from coalescences of binary black hole systems and neutron star with low tidal effects can hardly be distinguished if the two have similar masses. In absence discriminating power based on gravitational wave-forms, classification sources into stars, holes mixed containing a only unambiguous when assuming standard model stellar evolution using fact that there exists mass gap between stars holes. This approach is however limited by its own assumptions: for instance 2.6 solar object detected in GW190814 event remains unclassified, models new physics introduce compact objects, like primordial holes, which may masses same range as stars. Then, without an electromagnetic counterpart (kilonova), classifying mergers objects criteria difficult task, unless source close enough. what follows we investigate procedure to discriminate merger Bayes factor simulated superimpose realistic detector noise.