{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2012:AJUQ5RBWA42WKFGNCROCIL625L","short_pith_number":"pith:AJUQ5RBW","schema_version":"1.0","canonical_sha256":"02690ec43607356514cd145c242fdaeaf9946a370566ce99762f79628fb9de93","source":{"kind":"arxiv","id":"1207.6210","version":1},"attestation_state":"computed","paper":{"title":"The habitability and detection of Earth-like planets orbiting cool white dwarfs","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.EP"],"primary_cat":"astro-ph.SR","authors_text":"C. A. Haswell, D. V. Shulyak, L. Fossati, M. F. Sterzik, M. R. Patel, P. M. Kowalski, R. Busuttil, S. Bagnulo","submitted_at":"2012-07-26T09:07:26Z","abstract_excerpt":"Since there are several ways planets can survive the giant phase of the host star, we examine the habitability and detection of planets orbiting white dwarfs. As a white dwarf cools from 6000 K to 4000 K, a planet orbiting at 0.01 AU would remain in the Continuous Habitable Zone (CHZ) for ~8 Gyr. We show that photosynthetic processes can be sustained on such planets. The DNA-weighted UV radiation dose for an Earth-like planet in the CHZ is less than the maxima encountered on Earth, hence non-magnetic white dwarfs are compatible with the persistence of complex life. Polarisation due to a terres"},"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":"1207.6210","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-07-26T09:07:26Z","cross_cats_sorted":["astro-ph.EP"],"title_canon_sha256":"be4650cc48de481fe1ece2c7f354a791b99ed0f185a35c722aac845c4b75c620","abstract_canon_sha256":"cb0969cf3a3afc0af4bd65c41effb04c987552d89434cc115b5c35ed979c3549"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:56:07.297156Z","signature_b64":"4WwzjVW3E5iU2qkngY8mVXuIT4IwGILF8/RCBXmulM7Bkf5P48KmgYvGJIFOaaAXOdC9KsBbnaVSQ9YULBDmDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"02690ec43607356514cd145c242fdaeaf9946a370566ce99762f79628fb9de93","last_reissued_at":"2026-05-18T01:56:07.296635Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:56:07.296635Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"The habitability and detection of Earth-like planets orbiting cool white dwarfs","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.EP"],"primary_cat":"astro-ph.SR","authors_text":"C. A. Haswell, D. V. Shulyak, L. Fossati, M. F. Sterzik, M. R. Patel, P. M. Kowalski, R. Busuttil, S. Bagnulo","submitted_at":"2012-07-26T09:07:26Z","abstract_excerpt":"Since there are several ways planets can survive the giant phase of the host star, we examine the habitability and detection of planets orbiting white dwarfs. As a white dwarf cools from 6000 K to 4000 K, a planet orbiting at 0.01 AU would remain in the Continuous Habitable Zone (CHZ) for ~8 Gyr. We show that photosynthetic processes can be sustained on such planets. The DNA-weighted UV radiation dose for an Earth-like planet in the CHZ is less than the maxima encountered on Earth, hence non-magnetic white dwarfs are compatible with the persistence of complex life. Polarisation due to a terres"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1207.6210","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":""},"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":"1207.6210","created_at":"2026-05-18T01:56:07.296737+00:00"},{"alias_kind":"arxiv_version","alias_value":"1207.6210v1","created_at":"2026-05-18T01:56:07.296737+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1207.6210","created_at":"2026-05-18T01:56:07.296737+00:00"},{"alias_kind":"pith_short_12","alias_value":"AJUQ5RBWA42W","created_at":"2026-05-18T12:26:58.693483+00:00"},{"alias_kind":"pith_short_16","alias_value":"AJUQ5RBWA42WKFGN","created_at":"2026-05-18T12:26:58.693483+00:00"},{"alias_kind":"pith_short_8","alias_value":"AJUQ5RBW","created_at":"2026-05-18T12:26:58.693483+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/AJUQ5RBWA42WKFGNCROCIL625L","json":"https://pith.science/pith/AJUQ5RBWA42WKFGNCROCIL625L.json","graph_json":"https://pith.science/api/pith-number/AJUQ5RBWA42WKFGNCROCIL625L/graph.json","events_json":"https://pith.science/api/pith-number/AJUQ5RBWA42WKFGNCROCIL625L/events.json","paper":"https://pith.science/paper/AJUQ5RBW"},"agent_actions":{"view_html":"https://pith.science/pith/AJUQ5RBWA42WKFGNCROCIL625L","download_json":"https://pith.science/pith/AJUQ5RBWA42WKFGNCROCIL625L.json","view_paper":"https://pith.science/paper/AJUQ5RBW","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1207.6210&json=true","fetch_graph":"https://pith.science/api/pith-number/AJUQ5RBWA42WKFGNCROCIL625L/graph.json","fetch_events":"https://pith.science/api/pith-number/AJUQ5RBWA42WKFGNCROCIL625L/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/AJUQ5RBWA42WKFGNCROCIL625L/action/timestamp_anchor","attest_storage":"https://pith.science/pith/AJUQ5RBWA42WKFGNCROCIL625L/action/storage_attestation","attest_author":"https://pith.science/pith/AJUQ5RBWA42WKFGNCROCIL625L/action/author_attestation","sign_citation":"https://pith.science/pith/AJUQ5RBWA42WKFGNCROCIL625L/action/citation_signature","submit_replication":"https://pith.science/pith/AJUQ5RBWA42WKFGNCROCIL625L/action/replication_record"}},"created_at":"2026-05-18T01:56:07.296737+00:00","updated_at":"2026-05-18T01:56:07.296737+00:00"}