The radial supernova remnant distribution in the Galaxy

Supernovae are the dominant source of chemical enrichment galaxies, and they an important energy to heat interstellar medium accelerate cosmic rays. Our knowledge supernovae in Milky Way is based mostly on study Galactic supernova remnants (SNRs), providing (incomplete) record activity over last ~100,000 yr. Here we report investigation spatial distribution SNRs. Given limited number SNRs it common assume a functional form for Galactocentric However, several forms have been used past, without much justification radial distribution. For example, one often implies that no present Centre region. presence magnetar SNR near suggest with zero at not realistic. In light these concerns reevaluate We provide brief outline main detection biases finding investigate whether or use most justified how compares other models do this by analysing longitudinal find simple exponential consistent simplest model describing Galaxy draw comparisons massive star formation metallicity distributions.