Supernova remnants (SNRs) in Local Group galaxies offer unique insights into the origin of different types of supernovae. In order to take full advantage of these insights, one must understand the intrinsic and environmental diversity of SNRs in the context of their host galaxies. We introduce a semi-analytic model that reproduces the statistical properties of a radio continuum-selected SNR population, taking into account the detection limits of radio surveys, the range of SN kinetic energies, the measured ISM and stellar mass distribution in the host galaxy from multi-wavelength images and the current understanding of electron acceleration and magnetic field amplification in SNR shocks from first-principle kinetic simulations. Applying our model to the SNR population in M33, we reproduce the SNR radio luminosity function with a median SN rate of ∼ 3.1 × 10 −3 per year and an electron acceleration efficiency, e ∼ 4.2 × 10 −3 . We predict that the radio visibility times of ∼ 70% of M33 SNRs will be determined by their Sedov-Taylor lifetimes, and correlated with the measured ISM column density, N H (t vis ∝ N −a H , with a ∼ 0.33) while the remaining will have visibility times determined by the detection limit of the radio survey. These observational constraints on the visibility time of SNRs will allow us to use SNR catalogs as 'SN surveys' to calculate SN rates and delay time distributions in the Local Group.

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In this article I explore how documents created in support of ≠khomani San land claimants, located in the southern Kalahari Desert, represent a specific way of knowing that contributes to a socio‐legal construction of “community.” The documents that I use in this article have been authored by government organizations and NGOs, and compiled into a single repository of community information. By tracking the use of the term community throughout the repository, I demonstrate that the term is articulated through and across various fields of knowledge to achieve different social, political, and legal ends. This field of diverse motives, I argue, is neutralized and obscured through the standardized form of the documents themselves, contributing to a socio‐legal construction of community wherein notions of indigeneity are both exclusive and temporally fixed.