Australia Telescope Compact Array observations for project C3696 semester 2025OCTS

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Radio and X-ray observations of supernovae (SNe) years to decades post-explosion are crucial to drive progress in several fundamental areas of explosive transient research. Key questions include the nature of mass-loss preceding explosions, progenitor star attributes leading to central engines, and the properties of young neutron stars and black holes. However, there are very limited subsets of SNe with late-time radio observations. We developed a sample of 14 X-ray sources from the SRG/eROSITA all-sky survey data at the location of known core-collapse SNe, offering new avenues for exploration. We propose a pilot ATCA survey of six X-ray sources from this sample to investigate their late-time radio evolution as part of a broader multi-wavelength follow-up campaign. We request 66 hours of ATCA time for this project.