{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2024:MFBU7MD5CK4W3QU6UKGLJ5WP76","short_pith_number":"pith:MFBU7MD5","schema_version":"1.0","canonical_sha256":"61434fb07d12b96dc29ea28cb4f6cfffbb96051f359ed7f2735439add25e59e0","source":{"kind":"arxiv","id":"2402.17957","version":1},"attestation_state":"computed","paper":{"title":"Missing Titanium in the Asymmetric Supernova Remnant W49B","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"Brian J. Williams, John P. Hughes, Keiichi Maeda, Makoto Sawada, Toshiki Sato","submitted_at":"2024-02-28T00:46:49Z","abstract_excerpt":"The progenitor of the W49B supernova remnant is still under debate. One of the candidates is a jet-driven core-collapse supernova. In such a highly asymmetric explosion, a strong $\\alpha$-rich freezeout is expected in local high entropy regions, which should enrich elements synthesized by the capture of $\\alpha$-particles such as $^{44}$Ti and $^{48}$Cr (decaying to $^{44}$Ca and $^{48}$Ti, respectively). In the present work, in order to infer the progenitor of the W49B remnant, we constrain the amount of stable Ti ($^{48}$Ti) synthesized, using the {\\it Suzaku} observation. We found no firm e"},"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":"2402.17957","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2024-02-28T00:46:49Z","cross_cats_sorted":[],"title_canon_sha256":"446db5aa35637ce73ac9f8ed7e4a0505cf207b0eed6dfce2a27dba76ed91478c","abstract_canon_sha256":"8da4347884d245c7fcb121bee2f0f98b898ad2b41b28dd30de0f351016b2012b"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T07:50:10.151909Z","signature_b64":"4sUnktQib/WYKxSeNEAgIS6ioqTewp5qhEFYgp7JNf+J6/5/mbbEy4Hd8QIK+jmG+Nk7APn7IwcZusRuIUzLAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"61434fb07d12b96dc29ea28cb4f6cfffbb96051f359ed7f2735439add25e59e0","last_reissued_at":"2026-07-05T07:50:10.151487Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T07:50:10.151487Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Missing Titanium in the Asymmetric Supernova Remnant W49B","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"Brian J. Williams, John P. Hughes, Keiichi Maeda, Makoto Sawada, Toshiki Sato","submitted_at":"2024-02-28T00:46:49Z","abstract_excerpt":"The progenitor of the W49B supernova remnant is still under debate. One of the candidates is a jet-driven core-collapse supernova. In such a highly asymmetric explosion, a strong $\\alpha$-rich freezeout is expected in local high entropy regions, which should enrich elements synthesized by the capture of $\\alpha$-particles such as $^{44}$Ti and $^{48}$Cr (decaying to $^{44}$Ca and $^{48}$Ti, respectively). In the present work, in order to infer the progenitor of the W49B remnant, we constrain the amount of stable Ti ($^{48}$Ti) synthesized, using the {\\it Suzaku} observation. We found no firm e"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2402.17957","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/2402.17957/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":"2402.17957","created_at":"2026-07-05T07:50:10.151544+00:00"},{"alias_kind":"arxiv_version","alias_value":"2402.17957v1","created_at":"2026-07-05T07:50:10.151544+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2402.17957","created_at":"2026-07-05T07:50:10.151544+00:00"},{"alias_kind":"pith_short_12","alias_value":"MFBU7MD5CK4W","created_at":"2026-07-05T07:50:10.151544+00:00"},{"alias_kind":"pith_short_16","alias_value":"MFBU7MD5CK4W3QU6","created_at":"2026-07-05T07:50:10.151544+00:00"},{"alias_kind":"pith_short_8","alias_value":"MFBU7MD5","created_at":"2026-07-05T07:50:10.151544+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":1,"internal_anchor_count":1,"sample":[{"citing_arxiv_id":"2502.09543","citing_title":"The main jet axis of the W49B supernova remnant","ref_index":34,"is_internal_anchor":true}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/MFBU7MD5CK4W3QU6UKGLJ5WP76","json":"https://pith.science/pith/MFBU7MD5CK4W3QU6UKGLJ5WP76.json","graph_json":"https://pith.science/api/pith-number/MFBU7MD5CK4W3QU6UKGLJ5WP76/graph.json","events_json":"https://pith.science/api/pith-number/MFBU7MD5CK4W3QU6UKGLJ5WP76/events.json","paper":"https://pith.science/paper/MFBU7MD5"},"agent_actions":{"view_html":"https://pith.science/pith/MFBU7MD5CK4W3QU6UKGLJ5WP76","download_json":"https://pith.science/pith/MFBU7MD5CK4W3QU6UKGLJ5WP76.json","view_paper":"https://pith.science/paper/MFBU7MD5","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2402.17957&json=true","fetch_graph":"https://pith.science/api/pith-number/MFBU7MD5CK4W3QU6UKGLJ5WP76/graph.json","fetch_events":"https://pith.science/api/pith-number/MFBU7MD5CK4W3QU6UKGLJ5WP76/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/MFBU7MD5CK4W3QU6UKGLJ5WP76/action/timestamp_anchor","attest_storage":"https://pith.science/pith/MFBU7MD5CK4W3QU6UKGLJ5WP76/action/storage_attestation","attest_author":"https://pith.science/pith/MFBU7MD5CK4W3QU6UKGLJ5WP76/action/author_attestation","sign_citation":"https://pith.science/pith/MFBU7MD5CK4W3QU6UKGLJ5WP76/action/citation_signature","submit_replication":"https://pith.science/pith/MFBU7MD5CK4W3QU6UKGLJ5WP76/action/replication_record"}},"created_at":"2026-07-05T07:50:10.151544+00:00","updated_at":"2026-07-05T07:50:10.151544+00:00"}