Determining the Delay Time Distribution Rate for SN Ia Using Monte Carlo Simulations
Level of Education of Students Involved
Arts and Sciences
Physics and Astronomy
Here we study double degenerate systems (DDs); in this context, those are double white dwarfs. Specifically, we explore the rate at which type Ia supernovae (SN Ia) occur as a result of double degenerate systems. SN Ia originate from exploding white dwarfs. In order to better understand SN Ia, we determine a delay time distribution rate, which is the number of SN Ia that occur at certain ages of the specific double degenerate system. Due to a lack of data for DDs, we simulate more of these systems using various probability distributions for multiple parameters in order to expand the data set. We base our distributions on DD systems found among the central stars of planetary nebulae and explore how reasonable alterations to these probability functions affect the delay time distribution. Overall, we find that our predicted rate at which SN Ia occur in spiral galaxies is consistent with observed SN Ia rates and delay time distributions, suggesting that up to 80% of all SN Ia may come from DD mergers.
Burbridge, Brook; Hillwig, Todd; and Bakke, William, "Determining the Delay Time Distribution Rate for SN Ia Using Monte Carlo Simulations" (2023). Symposium on Undergraduate Research and Creative Expression (SOURCE). 1189.