{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2019:TKWHHF7PRW3P2WN4QW7OCIJ24E","short_pith_number":"pith:TKWHHF7P","schema_version":"1.0","canonical_sha256":"9aac7397ef8db6fd59bc85bee1213ae1152b2354cd2dbb500bd99de8187007b6","source":{"kind":"arxiv","id":"1906.02380","version":1},"attestation_state":"computed","paper":{"title":"SOFIA Far-infrared [O III] and [O I] Observations of Dense CO-knots in the Supernova Remnant Cassiopeia A: Multi-phase Ejecta","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"astro-ph.GA","authors_text":"Alexander Tielens, Dario Fadda, Isabelle Cherchneff, Jeonghee Rho, John Black, Olivier Berne, Sebastien Muller, Sofia Wallstrom","submitted_at":"2019-06-06T01:53:29Z","abstract_excerpt":"Dense, fast-moving ejecta knots in supernova remnants are prime sites for molecule and dust formation. We present SOFIA far-IR spectrometer FIFI-LS observations of CO-rich knots in Cas A which cover a ~1 square arc minute area of the northern shell, in the [O III] 52 and 88 micron and [O I] 63 micron lines. The FIFI-LS spectra reveal that the line profiles of [O III] and [O I] are similar to those of the Herschel PACS [O III] and CO lines. We find that the [O III] maps show very different morphology than the [O I] map. The [O III] maps reveal diffuse, large-scale structures and the ratio of th"},"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":"1906.02380","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-06-06T01:53:29Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"57b4d37757632d1a6a496f59b2f1dbd189b2e6c37ae364f4aeb22560cc0f2421","abstract_canon_sha256":"ee173e8c822f37cd4dda71884ee212ea43e566c4faee2c16d9149187aa62eafb"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:44:01.392663Z","signature_b64":"fQh7SlYJxKYHC2l2zFcvSvtEGDlRxce3YfYB/OTeAED9qfUTFTLofq+V/K9ldilzc8eoh8QxqgTOVHvvSLS1CA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9aac7397ef8db6fd59bc85bee1213ae1152b2354cd2dbb500bd99de8187007b6","last_reissued_at":"2026-05-17T23:44:01.392092Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:44:01.392092Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"SOFIA Far-infrared [O III] and [O I] Observations of Dense CO-knots in the Supernova Remnant Cassiopeia A: Multi-phase Ejecta","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"astro-ph.GA","authors_text":"Alexander Tielens, Dario Fadda, Isabelle Cherchneff, Jeonghee Rho, John Black, Olivier Berne, Sebastien Muller, Sofia Wallstrom","submitted_at":"2019-06-06T01:53:29Z","abstract_excerpt":"Dense, fast-moving ejecta knots in supernova remnants are prime sites for molecule and dust formation. We present SOFIA far-IR spectrometer FIFI-LS observations of CO-rich knots in Cas A which cover a ~1 square arc minute area of the northern shell, in the [O III] 52 and 88 micron and [O I] 63 micron lines. The FIFI-LS spectra reveal that the line profiles of [O III] and [O I] are similar to those of the Herschel PACS [O III] and CO lines. We find that the [O III] maps show very different morphology than the [O I] map. The [O III] maps reveal diffuse, large-scale structures and the ratio of th"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1906.02380","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":"1906.02380","created_at":"2026-05-17T23:44:01.392174+00:00"},{"alias_kind":"arxiv_version","alias_value":"1906.02380v1","created_at":"2026-05-17T23:44:01.392174+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1906.02380","created_at":"2026-05-17T23:44:01.392174+00:00"},{"alias_kind":"pith_short_12","alias_value":"TKWHHF7PRW3P","created_at":"2026-05-18T12:33:30.264802+00:00"},{"alias_kind":"pith_short_16","alias_value":"TKWHHF7PRW3P2WN4","created_at":"2026-05-18T12:33:30.264802+00:00"},{"alias_kind":"pith_short_8","alias_value":"TKWHHF7P","created_at":"2026-05-18T12:33:30.264802+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/TKWHHF7PRW3P2WN4QW7OCIJ24E","json":"https://pith.science/pith/TKWHHF7PRW3P2WN4QW7OCIJ24E.json","graph_json":"https://pith.science/api/pith-number/TKWHHF7PRW3P2WN4QW7OCIJ24E/graph.json","events_json":"https://pith.science/api/pith-number/TKWHHF7PRW3P2WN4QW7OCIJ24E/events.json","paper":"https://pith.science/paper/TKWHHF7P"},"agent_actions":{"view_html":"https://pith.science/pith/TKWHHF7PRW3P2WN4QW7OCIJ24E","download_json":"https://pith.science/pith/TKWHHF7PRW3P2WN4QW7OCIJ24E.json","view_paper":"https://pith.science/paper/TKWHHF7P","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1906.02380&json=true","fetch_graph":"https://pith.science/api/pith-number/TKWHHF7PRW3P2WN4QW7OCIJ24E/graph.json","fetch_events":"https://pith.science/api/pith-number/TKWHHF7PRW3P2WN4QW7OCIJ24E/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/TKWHHF7PRW3P2WN4QW7OCIJ24E/action/timestamp_anchor","attest_storage":"https://pith.science/pith/TKWHHF7PRW3P2WN4QW7OCIJ24E/action/storage_attestation","attest_author":"https://pith.science/pith/TKWHHF7PRW3P2WN4QW7OCIJ24E/action/author_attestation","sign_citation":"https://pith.science/pith/TKWHHF7PRW3P2WN4QW7OCIJ24E/action/citation_signature","submit_replication":"https://pith.science/pith/TKWHHF7PRW3P2WN4QW7OCIJ24E/action/replication_record"}},"created_at":"2026-05-17T23:44:01.392174+00:00","updated_at":"2026-05-17T23:44:01.392174+00:00"}