John Bray

X-BPASS : Self-consistent modelling of stellar populations and their associated X-ray Binary emission in a binary stellar evolution framework

X-ray binaries play a significant role in the thermal and ionization history of galaxies. Their X-ray luminosity can shed light on galactic star formation rate and histories. Compact objects are also crucial in the evolution of gravitational wave progenitors. Here we present the results from our work to extend the binary population and spectral synthesis (BPASS) code to incorporate X-ray emission onto compact remnants in binary systems. We self-consistently model the accretion disc for each interacting binary system in a grid of stellar evolution models and then combine these to obtain the total X-ray spectra for stellar populations over a range of ages and metallicities. Crucially, these are estimated using the same stellar models as those used for modelling the stellar spectral energy distribution. We utilise first principle equations to calculate the X-ray binary (XRB) evolution, luminosity and spectral energy densities of individual accreting compact objects.