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The birth rate of low-field NSs is probably comparable with the birth rate of normal radio pulsars. However, among compact objects in High-Mass X-ray Binaries (HMXBs) we do not see robust candidates for low-field NSs. We propose that this contradiction can be solved if magnetic fields of CCOs was buried due to strong fall-back, and then the field emerges on the time scale $10^4$-$10^5$ yrs."},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1206.2819","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2012-06-13T14:29:07Z","cross_cats_sorted":[],"title_canon_sha256":"aedb1e8f2d3b418ee6fb0fb1e5c064491a4a92d2b5f11a323925319658c25ed7","abstract_canon_sha256":"4b6f112483f5356b8370f8eda2e529cddf5373e9d1fa59adaeac4cf8c7351f27"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:53:43.039099Z","signature_b64":"gyATqmbTvgj5zmplvmvviQfX8fuDOdXlczy/3wWnl2n9GaVkz0Yh044Hmlb+fSbXHFyUuXEqY2m+cJLTW84mCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6216de4aba6ffc01d590ef462bc9c432ab10a630d4d6400b16ae7f51a4da3026","last_reissued_at":"2026-05-18T03:53:43.038605Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:53:43.038605Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Initial parameters of neutron stars","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"Mullard Space Science Lab. 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