{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2006:V437IGJDDTZY7BKMXQ6LTPAVWU","short_pith_number":"pith:V437IGJD","schema_version":"1.0","canonical_sha256":"af37f419231cf38f854cbc3cb9bc15b53110350fca0f88b8ab46506b9f822afc","source":{"kind":"arxiv","id":"astro-ph/0602210","version":2},"attestation_state":"computed","paper":{"title":"GBT Observations of IC 443: the Nature of OH(1720 MHz) Masers and OH Absorption","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"Douglas A. Roberts, Farhad Yusef-Zadeh, John W. Hewitt, Mark Wardle, Namir E. Kassim","submitted_at":"2006-02-09T19:46:49Z","abstract_excerpt":"We present results of spectral line observations of the ground state transitions of hydroxyl(OH) toward supernova remnant IC 443 carried out with the Green Bank Telescope. At a spatial resolution of 7.2 arcminutes we detect weak, extended OH(1720 MHz) maser emission with OH(1667/5,1612 MHz) absorption along the southern extent of the remnant, where no bright compact maser sources have been observed previously. These newly detected SNR-type masers are coincident with known molecular clumps and a ridge of shocked molecular hydrogen indicative of the SNR shock front interacting with the adjacent "},"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":"astro-ph/0602210","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2006-02-09T19:46:49Z","cross_cats_sorted":[],"title_canon_sha256":"b3de6e7fb49effe3edbfd6d4a1c2baad930aef2b4c608bbc2716143e22a16883","abstract_canon_sha256":"80875675cadcf8fb6b43c9b6bee964b7bee442e80ec6f94953300deef172afc9"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T15:19:39.657215Z","signature_b64":"BkvOkTqCrOpMMFoVtVyn/FSdIP/9EuPGzXWq7GgpU88SAT9qQqieVxwVyC8w8RLjC80CR+SnsAzHZMVWy48gAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"af37f419231cf38f854cbc3cb9bc15b53110350fca0f88b8ab46506b9f822afc","last_reissued_at":"2026-07-04T15:19:39.656791Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T15:19:39.656791Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"GBT Observations of IC 443: the Nature of OH(1720 MHz) Masers and OH Absorption","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"Douglas A. Roberts, Farhad Yusef-Zadeh, John W. Hewitt, Mark Wardle, Namir E. Kassim","submitted_at":"2006-02-09T19:46:49Z","abstract_excerpt":"We present results of spectral line observations of the ground state transitions of hydroxyl(OH) toward supernova remnant IC 443 carried out with the Green Bank Telescope. At a spatial resolution of 7.2 arcminutes we detect weak, extended OH(1720 MHz) maser emission with OH(1667/5,1612 MHz) absorption along the southern extent of the remnant, where no bright compact maser sources have been observed previously. These newly detected SNR-type masers are coincident with known molecular clumps and a ridge of shocked molecular hydrogen indicative of the SNR shock front interacting with the adjacent "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0602210","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/astro-ph/0602210/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":"astro-ph/0602210","created_at":"2026-07-04T15:19:39.656862+00:00"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0602210v2","created_at":"2026-07-04T15:19:39.656862+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0602210","created_at":"2026-07-04T15:19:39.656862+00:00"},{"alias_kind":"pith_short_12","alias_value":"V437IGJDDTZY","created_at":"2026-07-04T15:19:39.656862+00:00"},{"alias_kind":"pith_short_16","alias_value":"V437IGJDDTZY7BKM","created_at":"2026-07-04T15:19:39.656862+00:00"},{"alias_kind":"pith_short_8","alias_value":"V437IGJD","created_at":"2026-07-04T15:19:39.656862+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/V437IGJDDTZY7BKMXQ6LTPAVWU","json":"https://pith.science/pith/V437IGJDDTZY7BKMXQ6LTPAVWU.json","graph_json":"https://pith.science/api/pith-number/V437IGJDDTZY7BKMXQ6LTPAVWU/graph.json","events_json":"https://pith.science/api/pith-number/V437IGJDDTZY7BKMXQ6LTPAVWU/events.json","paper":"https://pith.science/paper/V437IGJD"},"agent_actions":{"view_html":"https://pith.science/pith/V437IGJDDTZY7BKMXQ6LTPAVWU","download_json":"https://pith.science/pith/V437IGJDDTZY7BKMXQ6LTPAVWU.json","view_paper":"https://pith.science/paper/V437IGJD","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=astro-ph/0602210&json=true","fetch_graph":"https://pith.science/api/pith-number/V437IGJDDTZY7BKMXQ6LTPAVWU/graph.json","fetch_events":"https://pith.science/api/pith-number/V437IGJDDTZY7BKMXQ6LTPAVWU/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/V437IGJDDTZY7BKMXQ6LTPAVWU/action/timestamp_anchor","attest_storage":"https://pith.science/pith/V437IGJDDTZY7BKMXQ6LTPAVWU/action/storage_attestation","attest_author":"https://pith.science/pith/V437IGJDDTZY7BKMXQ6LTPAVWU/action/author_attestation","sign_citation":"https://pith.science/pith/V437IGJDDTZY7BKMXQ6LTPAVWU/action/citation_signature","submit_replication":"https://pith.science/pith/V437IGJDDTZY7BKMXQ6LTPAVWU/action/replication_record"}},"created_at":"2026-07-04T15:19:39.656862+00:00","updated_at":"2026-07-04T15:19:39.656862+00:00"}