Galactic supernova remnants (SNRs) play an important role in our understanding of supernovae and their feedback on the interstellar environment. SNR G352.7−0.1 is special for its thermal composite morphology and double-ring structure. We have performed spectroscopic mapping in 12CO and 13CO J=2-1 lines toward G352.7−0.1 with the Atacama Pathfinder Experiment telescope. Broad 12CO lines are found in the northeastern ring at a local-standard-of-rest velocity range of ∼−50-−30 km s−1, suggesting that the remnant is interacting with molecular clouds (MCs) at ∼−51 km s−1. Thus, we adopt a distance of ∼10.5 kpc for this SNR. The momentum and kinetic energy of the shocked gas along the line of sight are estimated to be ∼102Msun km s−1 and ∼1046 erg, respectively. We also find an expanding structure around the remnant, which is possibly related to the wind-blown bubble of the progenitor star. From the Fermi-LAT data in an energy range of 0.1-500 GeV, we find no gamma-ray counterparts of G352.7−0.1.
@article{arxiv.2307.03369,
title = {Molecular environment of the thermal composite supernova remnant G352.7$-$0.1},
author = {Qian-Qian Zhang and Ping Zhou and Yang Chen and Xiao Zhang and Wen-Juan Zhong and Xin Zhou and Zhi-Yu Zhang and Jacco Vink},
journal= {arXiv preprint arXiv:2307.03369},
year = {2023}
}