092282

The large number of radio-quiet thermally emitting isolated neutron stars (INSs)in our local volume suggests that they belong to a neglected component of thepopulation. Only two such INSs are known at larger distances. We propose toinvestigate INS candidates from the 4XMM-DR9 catalogue to assess their long-termX-ray emission and improve spectral determination and localisation for follow-upstudies. Our program will explore a more remote and better characterised samplethan that detectable in the eROSITA All-Sky Survey. This fulfil proposal wasaccepted in AO20 and AO21 (IDs 088419 090126 Pires et al. 2022). The twoobserved targets show remarkably soft and constant properties and highX-ray-to-optical flux ratios: results that validate our strategy to discover INSs beyond the solar vicinity. [truncated! Please see actual data for full text]