Detection of the extended $\gamma$-ray emission from the new supernova remnant G321.3-3.9 with Fermi-LAT

Xiaolei Guo, Xi Liu

With the 15 yrs of Pass 8 data recorded by the {\em Fermi} Large Area Telescope, we report the detection of an extended gigaelectronvolt emission component with a 68\% containment…