TL;DR
This paper examines the distribution of supernova remnants in the Galaxy, addressing observational biases and using models to infer their true spatial distribution based on the observed data.
Contribution
It analyzes selection effects in SNR catalogues and compares observed distributions with models to estimate the Galactic distribution of SNRs.
Findings
Selection effects significantly impact SNR catalog completeness.
Observed SNR distribution constrains Galactic SNR distribution models.
Method improves understanding of SNR spatial distribution in the Galaxy.
Abstract
It is not straightforward to determine the distribution of supernova remnants (SNRs) in the Galaxy. The two main difficulties are that there are observational selection effects that mean that catalogues of SNRs are incomplete, and distances are not available for most remnants. Here I discuss the selection effects that apply to the latest catalogue of Galactic SNRs. I then compare the observed distribution of `bright' SNRs in Galactic longitude with that expected from models in order to constrain the Galactic distribution of SNRs.
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