Speaker
Christopher Burger-Scheidlin
Description
Current-generation radio surveys, such as the EMU survey with ASKAP, are revealing an increasing number of low-surface brightness radio SNRs at high Galactic latitudes, such as the newly discovered Ancora supernova remnant (SNR) was recently detected with ASKAP at (l, b) = (288.8, -6.3) by Filipovic et al. 2023. Analysing 15 years of Fermi-LAT data, we detect spatially extended γ-ray emission coinciding with the radio SNR, with detection significance up to 8.8σ and a spectrum extending up to around 5 GeV (CBS et al. 2024). Ancora SNR has since also been observed in optical (Fesen et al. 2024) revealing OIII and Hα emission from the region. It should also be possible to observe the object with the upcoming CTAO-South instrument.
