A revised Galactic supernova remnant catalogue

A revised catalogue of 274 Galactic supernova remnants (SNRs) is presented, along with some simple statistics of their parameters. It is shown that the remnants that have recently been identified are generally faint, as is expected from the selection effects that apply to the identification of remnants.

💡 Research Summary

The paper presents a thoroughly revised catalogue of Galactic supernova remnants (SNRs), expanding the total number to 274 objects and providing a uniform set of physical parameters for each. The authors begin by reviewing the limitations of earlier compilations, which were largely based on radio surveys with relatively high surface‑brightness thresholds. To overcome these selection biases, they incorporate data from recent high‑sensitivity radio interferometers (VLA, ATCA, Effelsberg, LOFAR, ASKAP), deep X‑ray observations (Chandra, XMM‑Newton), and optical emission‑line imaging (H α,