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Table 1
Criteria used to select the sources for the LOFAR census of non-recycled pulsars.
| Parameter | Criteria | Reasoning |
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| Declination (Dec) | Dec > 8° | Maximise the telescope sensitivity (which degrades with zenith angle, ZA, as ~ cos2ZA). |
| Galactic latitude (Gb) | | Gb | > 3° | Avoid higher sky background temperatures in the Galactic plane. |
| Surface magnetic field (Bsurf) | Bsurf> 1010 G | LOFAR observations of recycled pulsars were part of a separate project (Kondratiev et al. 2016). |
| Position error (ϵRA, ϵDec) | ϵRA< 130″ or ϵDec< 130″ | In order to avoid non-detections or biased flux density measurements due to mispointings, the source position error was required to be less than the full-width at half-maximum of LOFAR’s HBA full-core tied-array beam, pointed towards zenith, at the shortest wavelength observed (130″, van Haarlem et al. 2013). |
| Association | field pulsar | Excluding globular cluster pulsars aimed at simplifying time budget calculation (“one pulsar per pointing”) for the initial version of census proposal and persisted by accident. Thus, four otherwise suitable pulsars in M15 and M53 are missing from the census sample. |
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