Relatedly, NICER (an X-Ray telescope) launched in 2017, and has been observing pulsars to get radius measurements since then. See for instance https://arxiv.org

Relatedly, NICER (an X-Ray telescope) launched in 2017, and has been observing pulsars to get radius measurements since then. See for instance https://arxiv.org/abs/1912.05705 https://arxiv.org/abs/1912.05705. (I think there's a more recent measurement but I can't find it on arXiv.) I don't have a good understanding of the relationships between all the different methods, but I do know that NICER's measurements have systematically given larger radii (albeit with huge error bars) than other methods do.