{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2026:C3R637R5ARGGJ55RZXLXQ74Z7O","short_pith_number":"pith:C3R637R5","schema_version":"1.0","canonical_sha256":"16e3edfe3d044c64f7b1cdd7787f99fb90bd95001fd3938bb71c0ebfb9ce7e33","source":{"kind":"arxiv","id":"2605.26692","version":1},"attestation_state":"computed","paper":{"title":"From supernovae to neutron stars: crust formation time","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["nucl-th"],"primary_cat":"astro-ph.HE","authors_text":"Ken'ichiro Nakazato (Kyushu U.), Yudai Suwa (U. Tokyo & YITP)","submitted_at":"2026-05-26T08:31:33Z","abstract_excerpt":"A neutron star is born as a hot, lepton-rich protoneutron star (PNS) and cools via neutrino emission, eventually allowing heavy ions in the outer layers to crystallize into a solid crust. We develop a simple analytic estimate for the onset time of this crust formation during the late, post-convective PNS cooling phase. Using a diffusion-based neutrino luminosity and the resulting entropy evolution together with an approximately isentropic interior structure, we obtain the time-dependent density and temperature at the neutrinosphere. We then impose the Coulomb crystallization condition for heav"},"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":"2605.26692","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2026-05-26T08:31:33Z","cross_cats_sorted":["nucl-th"],"title_canon_sha256":"a2b7be2d1fc6ba7ca302638969f8914a74938c33912ef4eec5fb7e18f5f0d08b","abstract_canon_sha256":"8452f0446be2172b49f6b715d6697d77ece403c891c1481b3fe16e5014119fc4"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-27T01:06:06.364630Z","signature_b64":"mU7rIOeSw6bN/Lr9cKRlRQ3etCkphI0fk+5v0MDmPq0ATqQlhY8B9pGhqB9c5KWlz+coETFttdURocXJ2mVOCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"16e3edfe3d044c64f7b1cdd7787f99fb90bd95001fd3938bb71c0ebfb9ce7e33","last_reissued_at":"2026-05-27T01:06:06.363853Z","signature_status":"signed_v1","first_computed_at":"2026-05-27T01:06:06.363853Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"From supernovae to neutron stars: crust formation time","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["nucl-th"],"primary_cat":"astro-ph.HE","authors_text":"Ken'ichiro Nakazato (Kyushu U.), Yudai Suwa (U. Tokyo & YITP)","submitted_at":"2026-05-26T08:31:33Z","abstract_excerpt":"A neutron star is born as a hot, lepton-rich protoneutron star (PNS) and cools via neutrino emission, eventually allowing heavy ions in the outer layers to crystallize into a solid crust. We develop a simple analytic estimate for the onset time of this crust formation during the late, post-convective PNS cooling phase. Using a diffusion-based neutrino luminosity and the resulting entropy evolution together with an approximately isentropic interior structure, we obtain the time-dependent density and temperature at the neutrinosphere. We then impose the Coulomb crystallization condition for heav"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2605.26692","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2605.26692/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"aliases":[{"alias_kind":"arxiv","alias_value":"2605.26692","created_at":"2026-05-27T01:06:06.363983+00:00"},{"alias_kind":"arxiv_version","alias_value":"2605.26692v1","created_at":"2026-05-27T01:06:06.363983+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2605.26692","created_at":"2026-05-27T01:06:06.363983+00:00"},{"alias_kind":"pith_short_12","alias_value":"C3R637R5ARGG","created_at":"2026-05-27T01:06:06.363983+00:00"},{"alias_kind":"pith_short_16","alias_value":"C3R637R5ARGGJ55R","created_at":"2026-05-27T01:06:06.363983+00:00"},{"alias_kind":"pith_short_8","alias_value":"C3R637R5","created_at":"2026-05-27T01:06:06.363983+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/C3R637R5ARGGJ55RZXLXQ74Z7O","json":"https://pith.science/pith/C3R637R5ARGGJ55RZXLXQ74Z7O.json","graph_json":"https://pith.science/api/pith-number/C3R637R5ARGGJ55RZXLXQ74Z7O/graph.json","events_json":"https://pith.science/api/pith-number/C3R637R5ARGGJ55RZXLXQ74Z7O/events.json","paper":"https://pith.science/paper/C3R637R5"},"agent_actions":{"view_html":"https://pith.science/pith/C3R637R5ARGGJ55RZXLXQ74Z7O","download_json":"https://pith.science/pith/C3R637R5ARGGJ55RZXLXQ74Z7O.json","view_paper":"https://pith.science/paper/C3R637R5","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2605.26692&json=true","fetch_graph":"https://pith.science/api/pith-number/C3R637R5ARGGJ55RZXLXQ74Z7O/graph.json","fetch_events":"https://pith.science/api/pith-number/C3R637R5ARGGJ55RZXLXQ74Z7O/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/C3R637R5ARGGJ55RZXLXQ74Z7O/action/timestamp_anchor","attest_storage":"https://pith.science/pith/C3R637R5ARGGJ55RZXLXQ74Z7O/action/storage_attestation","attest_author":"https://pith.science/pith/C3R637R5ARGGJ55RZXLXQ74Z7O/action/author_attestation","sign_citation":"https://pith.science/pith/C3R637R5ARGGJ55RZXLXQ74Z7O/action/citation_signature","submit_replication":"https://pith.science/pith/C3R637R5ARGGJ55RZXLXQ74Z7O/action/replication_record"}},"created_at":"2026-05-27T01:06:06.363983+00:00","updated_at":"2026-05-27T01:06:06.363983+00:00"}