{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2012:N3P5D2HTCFLMH5R7E7IBRUJ2FS","short_pith_number":"pith:N3P5D2HT","schema_version":"1.0","canonical_sha256":"6edfd1e8f31156c3f63f27d018d13a2c90f0b22500afdcb1bcb164669be4168c","source":{"kind":"arxiv","id":"1207.4606","version":3},"attestation_state":"computed","paper":{"title":"Discovery of a halo around the Helix Nebula NGC 7293 in the WISE all-sky survey","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.SR","authors_text":"Chih-Hao Hsia, Sun Kwok, Yong Zhang","submitted_at":"2012-07-19T10:27:46Z","abstract_excerpt":"We report the discovery of an extended halo (40' in diameter) around the planetary nebula NGC7293 (the Helix Nebula) observed in 12micron band from the Wide-field Infrared Survey Explorer all-sky survey. The mid-infrared halo has an axisymmetric structure with a sharp boundary to the northeast and a more diffuse boundary to the southwest, suggesting an interaction between the stellar wind and the interstellar medium (ISM). The symmetry axis of the halo is well aligned with that of a northeast arc, suggesting that the two structures are physically associated. We have attempted to fit the observ"},"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":"1207.4606","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-07-19T10:27:46Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"ed3a349e90303ed46ce1b6d4fa9c9178a89deffdb7eb6eaac5490ccf042d03a1","abstract_canon_sha256":"55b361a20bfcee2d2c40d97d06910e6ec11ca67c3bd50768ba6c6e9483186324"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:56:16.338773Z","signature_b64":"ltRL1aTEBPWaM2l9OgvGQcXCAmgKm7IT38D/mCem0kpu3YbnbV8YpK90uz7XLZM0GTHtr575jBin+ThiczDNBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6edfd1e8f31156c3f63f27d018d13a2c90f0b22500afdcb1bcb164669be4168c","last_reissued_at":"2026-05-18T01:56:16.338295Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:56:16.338295Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Discovery of a halo around the Helix Nebula NGC 7293 in the WISE all-sky survey","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.SR","authors_text":"Chih-Hao Hsia, Sun Kwok, Yong Zhang","submitted_at":"2012-07-19T10:27:46Z","abstract_excerpt":"We report the discovery of an extended halo (40' in diameter) around the planetary nebula NGC7293 (the Helix Nebula) observed in 12micron band from the Wide-field Infrared Survey Explorer all-sky survey. The mid-infrared halo has an axisymmetric structure with a sharp boundary to the northeast and a more diffuse boundary to the southwest, suggesting an interaction between the stellar wind and the interstellar medium (ISM). The symmetry axis of the halo is well aligned with that of a northeast arc, suggesting that the two structures are physically associated. We have attempted to fit the observ"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1207.4606","kind":"arxiv","version":3},"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":"1207.4606","created_at":"2026-05-18T01:56:16.338387+00:00"},{"alias_kind":"arxiv_version","alias_value":"1207.4606v3","created_at":"2026-05-18T01:56:16.338387+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1207.4606","created_at":"2026-05-18T01:56:16.338387+00:00"},{"alias_kind":"pith_short_12","alias_value":"N3P5D2HTCFLM","created_at":"2026-05-18T12:27:16.716162+00:00"},{"alias_kind":"pith_short_16","alias_value":"N3P5D2HTCFLMH5R7","created_at":"2026-05-18T12:27:16.716162+00:00"},{"alias_kind":"pith_short_8","alias_value":"N3P5D2HT","created_at":"2026-05-18T12:27:16.716162+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":1,"internal_anchor_count":1,"sample":[{"citing_arxiv_id":"2608.11443","citing_title":"Numerous bow shocks in the outer Helix Nebula","ref_index":14,"is_internal_anchor":true}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/N3P5D2HTCFLMH5R7E7IBRUJ2FS","json":"https://pith.science/pith/N3P5D2HTCFLMH5R7E7IBRUJ2FS.json","graph_json":"https://pith.science/api/pith-number/N3P5D2HTCFLMH5R7E7IBRUJ2FS/graph.json","events_json":"https://pith.science/api/pith-number/N3P5D2HTCFLMH5R7E7IBRUJ2FS/events.json","paper":"https://pith.science/paper/N3P5D2HT"},"agent_actions":{"view_html":"https://pith.science/pith/N3P5D2HTCFLMH5R7E7IBRUJ2FS","download_json":"https://pith.science/pith/N3P5D2HTCFLMH5R7E7IBRUJ2FS.json","view_paper":"https://pith.science/paper/N3P5D2HT","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1207.4606&json=true","fetch_graph":"https://pith.science/api/pith-number/N3P5D2HTCFLMH5R7E7IBRUJ2FS/graph.json","fetch_events":"https://pith.science/api/pith-number/N3P5D2HTCFLMH5R7E7IBRUJ2FS/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/N3P5D2HTCFLMH5R7E7IBRUJ2FS/action/timestamp_anchor","attest_storage":"https://pith.science/pith/N3P5D2HTCFLMH5R7E7IBRUJ2FS/action/storage_attestation","attest_author":"https://pith.science/pith/N3P5D2HTCFLMH5R7E7IBRUJ2FS/action/author_attestation","sign_citation":"https://pith.science/pith/N3P5D2HTCFLMH5R7E7IBRUJ2FS/action/citation_signature","submit_replication":"https://pith.science/pith/N3P5D2HTCFLMH5R7E7IBRUJ2FS/action/replication_record"}},"created_at":"2026-05-18T01:56:16.338387+00:00","updated_at":"2026-05-18T01:56:16.338387+00:00"}