The role of supernova convection for the lower mass gap in the isolated binary formation of gravitational wave sources

ABSTRACT Understanding the astrophysical phenomena involving compact objects requires an insight about engine behind core-collapse supernovae (SNe) and fate of stellar collapse massive stars. In particular, this is crucial in developing understanding origin formation channels growing populations detected black hole–black hole, hole–neutron star, neutron star–neutron star mergers. The time-scale convection growth may have a large effect on strength SN explosion therefore also mass distribution remnants. We adopt new formulas for relation between pre-SN properties their remnants check how they impact population double object (DCO) mergers formed via isolated binary evolution. give one ability to test wide spectrum assumptions time. different variants allow smooth transition having deep gap remnant filled by stars low-mass holes. present masses, ratios, local merger rate densities DCO them together with approaches other highly uncertain processes. find that sensitive adopted assumption up $m_1+m_2 \lesssim 35 \, \mathrm{M}_{\odot }$. Between two extreme tested probability within differ approximately orders magnitude.