{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2011:72QWEGRYET2L2DCVW34GH6IKWI","short_pith_number":"pith:72QWEGRY","schema_version":"1.0","canonical_sha256":"fea1621a3824f4bd0c55b6f863f90ab20571b78462cb74a322f8e687c3ab9605","source":{"kind":"arxiv","id":"1105.1685","version":1},"attestation_state":"computed","paper":{"title":"Ridge Formation and De-Spinning of Iapetus via an Impact-Generated Satellite","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.EP","authors_text":"A. C. Barr, H. F. Levison, K. J. Walsh, L. Dones","submitted_at":"2011-05-09T14:31:39Z","abstract_excerpt":"We present a scenario for building the equatorial ridge and de-spinning Iapetus through an impact-generated disk and satellite. This impact puts debris into orbit, forming a ring inside the Roche limit and a satellite outside. This satellite rapidly pushes the ring material down to the surface of Iapetus, and then itself tidally evolves outward, thereby helping to de-spin Iapetus. This scenario can de-spin Iapetus an order of magnitude faster than when tides due to Saturn act alone, almost independently of its interior geophysical evolution. Eventually, the satellite is stripped from its orbit"},"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":"1105.1685","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2011-05-09T14:31:39Z","cross_cats_sorted":[],"title_canon_sha256":"2f7c4c482b4a677c6229791c605c7f0369a4508e13231fb1a02ba1cce7e84244","abstract_canon_sha256":"0ec5623c8cc98435f225e1f3e59d85505082680a471bf5b74a3cb90b420b068c"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:18:49.748903Z","signature_b64":"q5hbWo/gMNRrPntkmnTF6OAy6JbNVnE6Ts8WTAVipW5J1My6UzYKDJHE+ScQKfg19BUCtt3bLjvshXhBtfSTAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"fea1621a3824f4bd0c55b6f863f90ab20571b78462cb74a322f8e687c3ab9605","last_reissued_at":"2026-05-18T01:18:49.748284Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:18:49.748284Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Ridge Formation and De-Spinning of Iapetus via an Impact-Generated Satellite","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.EP","authors_text":"A. C. Barr, H. F. Levison, K. J. Walsh, L. Dones","submitted_at":"2011-05-09T14:31:39Z","abstract_excerpt":"We present a scenario for building the equatorial ridge and de-spinning Iapetus through an impact-generated disk and satellite. This impact puts debris into orbit, forming a ring inside the Roche limit and a satellite outside. This satellite rapidly pushes the ring material down to the surface of Iapetus, and then itself tidally evolves outward, thereby helping to de-spin Iapetus. This scenario can de-spin Iapetus an order of magnitude faster than when tides due to Saturn act alone, almost independently of its interior geophysical evolution. Eventually, the satellite is stripped from its orbit"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1105.1685","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":"1105.1685","created_at":"2026-05-18T01:18:49.748403+00:00"},{"alias_kind":"arxiv_version","alias_value":"1105.1685v1","created_at":"2026-05-18T01:18:49.748403+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1105.1685","created_at":"2026-05-18T01:18:49.748403+00:00"},{"alias_kind":"pith_short_12","alias_value":"72QWEGRYET2L","created_at":"2026-05-18T12:26:22.705136+00:00"},{"alias_kind":"pith_short_16","alias_value":"72QWEGRYET2L2DCV","created_at":"2026-05-18T12:26:22.705136+00:00"},{"alias_kind":"pith_short_8","alias_value":"72QWEGRY","created_at":"2026-05-18T12:26:22.705136+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/72QWEGRYET2L2DCVW34GH6IKWI","json":"https://pith.science/pith/72QWEGRYET2L2DCVW34GH6IKWI.json","graph_json":"https://pith.science/api/pith-number/72QWEGRYET2L2DCVW34GH6IKWI/graph.json","events_json":"https://pith.science/api/pith-number/72QWEGRYET2L2DCVW34GH6IKWI/events.json","paper":"https://pith.science/paper/72QWEGRY"},"agent_actions":{"view_html":"https://pith.science/pith/72QWEGRYET2L2DCVW34GH6IKWI","download_json":"https://pith.science/pith/72QWEGRYET2L2DCVW34GH6IKWI.json","view_paper":"https://pith.science/paper/72QWEGRY","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1105.1685&json=true","fetch_graph":"https://pith.science/api/pith-number/72QWEGRYET2L2DCVW34GH6IKWI/graph.json","fetch_events":"https://pith.science/api/pith-number/72QWEGRYET2L2DCVW34GH6IKWI/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/72QWEGRYET2L2DCVW34GH6IKWI/action/timestamp_anchor","attest_storage":"https://pith.science/pith/72QWEGRYET2L2DCVW34GH6IKWI/action/storage_attestation","attest_author":"https://pith.science/pith/72QWEGRYET2L2DCVW34GH6IKWI/action/author_attestation","sign_citation":"https://pith.science/pith/72QWEGRYET2L2DCVW34GH6IKWI/action/citation_signature","submit_replication":"https://pith.science/pith/72QWEGRYET2L2DCVW34GH6IKWI/action/replication_record"}},"created_at":"2026-05-18T01:18:49.748403+00:00","updated_at":"2026-05-18T01:18:49.748403+00:00"}