The cosmological evolution of the Milky Way’s antimatter factories

We know from gamma-ray observations that positrons, the antimatter partners of electrons, annihilate throughout the interstellar medium of the Milky Way. There is good evidence that most of these positrons originate from a peculiar type of subluminous thermonuclear supernova (called SN1991bg-like). In this project, you would make a calculation of how the rate of these supernovae changes with cosmological time given how they seem to evolve in the Milky Way. This prediction can then be compared with data from the Dark Energy Survey on the actual rate evolution of these objects.

Please contact the supervisor if you have any further questions about this project