Theoretical $\Sigma$-$D$ Relations for Shell-Type Galactic Supernova Remnants

Ya-Peng Hu, Hong-An Zeng, Jun Fang +2

Relations between radio surface brightness ($\Sigma$) and diameter ($D$) of supernova remnants (SNRs) are important in astronomy. In this paper, following the work Duric \& Seaquist (19…