A consistent estimate for Gravitational Wave and Electromagnetic
  transient rates
  Gravitational wave transients, resulting from the merger of two stellar
remnants, are now detectable. The properties and rates of these directly
relates to the stellar population which gave rise to their progenitors, and
thus to other, electromagnetic transients which result from stellar death. We
aim to estimate simultaneously the event rates and delay time distribution of
gravitational wave-driven compact object mergers together with the rates of
core collapse and thermonuclear supernovae within a single consistent stellar
population synthesis paradigm. We combine event delay-time distributions at
different metallicities from the Binary Population and Spectral Synthesis
(BPASS) models with an analytic model of the volume-averaged cosmic star
formation rate density and chemical evolution to determine the volume-averaged
rates of each event rate at the current time. We estimate rates in excellent
agreement with extant observational constraints on core-collapse supernovae,
thermonuclear supernovae and long GRBs. We predict rates for gravitational wave
mergers based on the same stellar populations, and find rates consistent with
current LIGO estimates. We note that tighter constraints on the rates of these
events will be required before it is possible to determine their redshift
evolution, progenitor metallicity dependence or constrain uncertain aspects of
stellar evolution.
