{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2015:RWXIHANLWVOGXH52ZVICII6C2J","short_pith_number":"pith:RWXIHANL","schema_version":"1.0","canonical_sha256":"8dae8381abb55c6b9fbacd502423c2d26603085417f51486c5a1ff03e29e6e70","source":{"kind":"arxiv","id":"1505.05999","version":2},"attestation_state":"computed","paper":{"title":"Revisiting INTEGRAL/SPI observations of 44Ti from Cassiopeia A","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"Jochen Greiner, Martin G. H. Krause, Roland Diehl, Thomas Siegert","submitted_at":"2015-05-22T09:20:06Z","abstract_excerpt":"The 340-year old supernova remnant Cassiopeia A at 3.4 kpc distance is the best-studied young core-collapse supernova remnant. Nucleosynthesis yields in radioactive isotopes have been studied with different methods, in particular for production and ejection of $^{44}$Ti and $^{56}$Ni which originate from the innermost regions of the supernova. $^{44}$Ti was first discovered in this remnant, but is not seen consistently in other core-collapse sources. We analyse the observations accumulated with the SPI spectrometer on INTEGRAL, together with an improved instrumental background method, to achie"},"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":"1505.05999","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2015-05-22T09:20:06Z","cross_cats_sorted":[],"title_canon_sha256":"2693342cd32f08448c3fe41a4c9bdc5dade8060be57c691944b1842418d29eba","abstract_canon_sha256":"72acf19c04af942848979eca639d8b276259a768901166320e25a4e762beda13"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:36:33.352735Z","signature_b64":"YtVVlw49A2aCwdjOEUsi9kgU0BBhn/fB+KJK57PTRRikwYmpMafcMHdOJWq1Szqf+86a6fcFkj6cele0W9q1Ag==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"8dae8381abb55c6b9fbacd502423c2d26603085417f51486c5a1ff03e29e6e70","last_reissued_at":"2026-05-18T01:36:33.352177Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:36:33.352177Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Revisiting INTEGRAL/SPI observations of 44Ti from Cassiopeia A","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"Jochen Greiner, Martin G. H. Krause, Roland Diehl, Thomas Siegert","submitted_at":"2015-05-22T09:20:06Z","abstract_excerpt":"The 340-year old supernova remnant Cassiopeia A at 3.4 kpc distance is the best-studied young core-collapse supernova remnant. Nucleosynthesis yields in radioactive isotopes have been studied with different methods, in particular for production and ejection of $^{44}$Ti and $^{56}$Ni which originate from the innermost regions of the supernova. $^{44}$Ti was first discovered in this remnant, but is not seen consistently in other core-collapse sources. We analyse the observations accumulated with the SPI spectrometer on INTEGRAL, together with an improved instrumental background method, to achie"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1505.05999","kind":"arxiv","version":2},"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":"1505.05999","created_at":"2026-05-18T01:36:33.352274+00:00"},{"alias_kind":"arxiv_version","alias_value":"1505.05999v2","created_at":"2026-05-18T01:36:33.352274+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1505.05999","created_at":"2026-05-18T01:36:33.352274+00:00"},{"alias_kind":"pith_short_12","alias_value":"RWXIHANLWVOG","created_at":"2026-05-18T12:29:39.896362+00:00"},{"alias_kind":"pith_short_16","alias_value":"RWXIHANLWVOGXH52","created_at":"2026-05-18T12:29:39.896362+00:00"},{"alias_kind":"pith_short_8","alias_value":"RWXIHANL","created_at":"2026-05-18T12:29:39.896362+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":1,"internal_anchor_count":1,"sample":[{"citing_arxiv_id":"2605.17213","citing_title":"Identifying observable MeV lines from the decays of weak and main $r$-process isotopes in mergers","ref_index":42,"is_internal_anchor":true}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/RWXIHANLWVOGXH52ZVICII6C2J","json":"https://pith.science/pith/RWXIHANLWVOGXH52ZVICII6C2J.json","graph_json":"https://pith.science/api/pith-number/RWXIHANLWVOGXH52ZVICII6C2J/graph.json","events_json":"https://pith.science/api/pith-number/RWXIHANLWVOGXH52ZVICII6C2J/events.json","paper":"https://pith.science/paper/RWXIHANL"},"agent_actions":{"view_html":"https://pith.science/pith/RWXIHANLWVOGXH52ZVICII6C2J","download_json":"https://pith.science/pith/RWXIHANLWVOGXH52ZVICII6C2J.json","view_paper":"https://pith.science/paper/RWXIHANL","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1505.05999&json=true","fetch_graph":"https://pith.science/api/pith-number/RWXIHANLWVOGXH52ZVICII6C2J/graph.json","fetch_events":"https://pith.science/api/pith-number/RWXIHANLWVOGXH52ZVICII6C2J/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/RWXIHANLWVOGXH52ZVICII6C2J/action/timestamp_anchor","attest_storage":"https://pith.science/pith/RWXIHANLWVOGXH52ZVICII6C2J/action/storage_attestation","attest_author":"https://pith.science/pith/RWXIHANLWVOGXH52ZVICII6C2J/action/author_attestation","sign_citation":"https://pith.science/pith/RWXIHANLWVOGXH52ZVICII6C2J/action/citation_signature","submit_replication":"https://pith.science/pith/RWXIHANLWVOGXH52ZVICII6C2J/action/replication_record"}},"created_at":"2026-05-18T01:36:33.352274+00:00","updated_at":"2026-05-18T01:36:33.352274+00:00"}