{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2011:62D2IYW3IGRZK4EV6IIOPFHP3Q","short_pith_number":"pith:62D2IYW3","schema_version":"1.0","canonical_sha256":"f687a462db41a3957095f210e794efdc3cd3e0882fcf7cc43cb5e41410a6a0d9","source":{"kind":"arxiv","id":"1109.2124","version":1},"attestation_state":"computed","paper":{"title":"A Spallation Model for the Titanium-rich Supernova Remnant Cassiopeia A","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["nucl-th"],"primary_cat":"astro-ph.HE","authors_text":"(2) Physics&Astronomy, AB, Amir Ouyed (1), CA, California State University Long Beach, Canada, Denis Leahy (1), Prashanth Jaikumar (2) ((1) Physics&Astronomy, Rachid Ouyed (1), University of Calgary, USA)","submitted_at":"2011-09-09T20:09:45Z","abstract_excerpt":"Titanium-rich subluminous supernovae are rare and challenge current SN nucleosynthesis models. We present a model in which ejecta from a standard Supernova is impacted by a second explosion of the neutron star (a Quark-nova), resulting in spallation reactions that lead to 56Ni destruction and 44Ti creation under the right conditions. Basic calculations of the spallation products shows that a delay between the two explosions of ~ 5 days reproduces the observed abundance of 44Ti in Cas A and explains its low luminosity as a result of the destruction of 56Ni. Our results could have important impl"},"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":"1109.2124","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2011-09-09T20:09:45Z","cross_cats_sorted":["nucl-th"],"title_canon_sha256":"0424371b599c4df0cd810ea0e27d50a9f0b942015b96453c77927549c387d27f","abstract_canon_sha256":"6f03a04abf382aa7c923baf0ec1d23c24a1aa5531779992f3d1b68cf92312572"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:00:36.959614Z","signature_b64":"R1u+t2O9u6Vpa4F6KUPh1yyf0DbOqcPkHzz4XF7z4w+XsWyXE6tbd6FY4YdElAYKV8zuCBxbPHJmL1yrIvq/CA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f687a462db41a3957095f210e794efdc3cd3e0882fcf7cc43cb5e41410a6a0d9","last_reissued_at":"2026-05-18T02:00:36.958909Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:00:36.958909Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"A Spallation Model for the Titanium-rich Supernova Remnant Cassiopeia A","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["nucl-th"],"primary_cat":"astro-ph.HE","authors_text":"(2) Physics&Astronomy, AB, Amir Ouyed (1), CA, California State University Long Beach, Canada, Denis Leahy (1), Prashanth Jaikumar (2) ((1) Physics&Astronomy, Rachid Ouyed (1), University of Calgary, USA)","submitted_at":"2011-09-09T20:09:45Z","abstract_excerpt":"Titanium-rich subluminous supernovae are rare and challenge current SN nucleosynthesis models. We present a model in which ejecta from a standard Supernova is impacted by a second explosion of the neutron star (a Quark-nova), resulting in spallation reactions that lead to 56Ni destruction and 44Ti creation under the right conditions. Basic calculations of the spallation products shows that a delay between the two explosions of ~ 5 days reproduces the observed abundance of 44Ti in Cas A and explains its low luminosity as a result of the destruction of 56Ni. Our results could have important impl"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1109.2124","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":"1109.2124","created_at":"2026-05-18T02:00:36.959026+00:00"},{"alias_kind":"arxiv_version","alias_value":"1109.2124v1","created_at":"2026-05-18T02:00:36.959026+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1109.2124","created_at":"2026-05-18T02:00:36.959026+00:00"},{"alias_kind":"pith_short_12","alias_value":"62D2IYW3IGRZ","created_at":"2026-05-18T12:26:22.705136+00:00"},{"alias_kind":"pith_short_16","alias_value":"62D2IYW3IGRZK4EV","created_at":"2026-05-18T12:26:22.705136+00:00"},{"alias_kind":"pith_short_8","alias_value":"62D2IYW3","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/62D2IYW3IGRZK4EV6IIOPFHP3Q","json":"https://pith.science/pith/62D2IYW3IGRZK4EV6IIOPFHP3Q.json","graph_json":"https://pith.science/api/pith-number/62D2IYW3IGRZK4EV6IIOPFHP3Q/graph.json","events_json":"https://pith.science/api/pith-number/62D2IYW3IGRZK4EV6IIOPFHP3Q/events.json","paper":"https://pith.science/paper/62D2IYW3"},"agent_actions":{"view_html":"https://pith.science/pith/62D2IYW3IGRZK4EV6IIOPFHP3Q","download_json":"https://pith.science/pith/62D2IYW3IGRZK4EV6IIOPFHP3Q.json","view_paper":"https://pith.science/paper/62D2IYW3","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1109.2124&json=true","fetch_graph":"https://pith.science/api/pith-number/62D2IYW3IGRZK4EV6IIOPFHP3Q/graph.json","fetch_events":"https://pith.science/api/pith-number/62D2IYW3IGRZK4EV6IIOPFHP3Q/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/62D2IYW3IGRZK4EV6IIOPFHP3Q/action/timestamp_anchor","attest_storage":"https://pith.science/pith/62D2IYW3IGRZK4EV6IIOPFHP3Q/action/storage_attestation","attest_author":"https://pith.science/pith/62D2IYW3IGRZK4EV6IIOPFHP3Q/action/author_attestation","sign_citation":"https://pith.science/pith/62D2IYW3IGRZK4EV6IIOPFHP3Q/action/citation_signature","submit_replication":"https://pith.science/pith/62D2IYW3IGRZK4EV6IIOPFHP3Q/action/replication_record"}},"created_at":"2026-05-18T02:00:36.959026+00:00","updated_at":"2026-05-18T02:00:36.959026+00:00"}