{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2013:FPBNUNFV6HUMUL463M6HNFY7AM","short_pith_number":"pith:FPBNUNFV","schema_version":"1.0","canonical_sha256":"2bc2da34b5f1e8ca2f9edb3c76971f0333f41ad0b66c263b4c5ee45f0cf817da","source":{"kind":"arxiv","id":"1302.3886","version":1},"attestation_state":"computed","paper":{"title":"Diffuse X-ray Emission from Planetary Nebulae with Nebular O VI","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"D. Schonberner, M.A. Guerrero, M. Steffen, N. Ruiz, R.A. Gruendl, R. Jacob, Y.-H. Chu","submitted_at":"2013-02-15T21:00:05Z","abstract_excerpt":"The presence of O VI ions can be indicative of plasma temperatures of a few times 10^5 K that is expected in heat conduction layers between the hot shocked stellar wind gas at several 10^6 K and the cooler (~10,000 K) nebular gas of planetary nebulae (PNe). We have used FUSE observations of PNe to search for nebular O VI emission or absorption as a diagnostic of conduction layer to ensure the presence of hot interior gas. Three PNe showing nebular O VI, namely IC 418, NGC 2392, and NGC 6826, have been selected for Chandra observations and diffuse X-ray emission is indeed detected in each 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":"1302.3886","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2013-02-15T21:00:05Z","cross_cats_sorted":[],"title_canon_sha256":"c4c5f660565620d571289a7663e341a30887d28e2a41c57639b1b21fb71fe9a6","abstract_canon_sha256":"47e3e5082015fa20eef2299c8c00c6b66fb21554c167192eb0ee9943a0bac4e9"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:51:36.162360Z","signature_b64":"3f+QDFPy3CG8ZznZDt3IiLXHpDFEf4SCi/E6vRtjR0K7y0B47R9DR0PdC7fkZM+5+Gq+wEafA7XuNxWqpB8YDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2bc2da34b5f1e8ca2f9edb3c76971f0333f41ad0b66c263b4c5ee45f0cf817da","last_reissued_at":"2026-05-18T01:51:36.161748Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:51:36.161748Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Diffuse X-ray Emission from Planetary Nebulae with Nebular O VI","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"D. Schonberner, M.A. Guerrero, M. Steffen, N. Ruiz, R.A. Gruendl, R. Jacob, Y.-H. Chu","submitted_at":"2013-02-15T21:00:05Z","abstract_excerpt":"The presence of O VI ions can be indicative of plasma temperatures of a few times 10^5 K that is expected in heat conduction layers between the hot shocked stellar wind gas at several 10^6 K and the cooler (~10,000 K) nebular gas of planetary nebulae (PNe). We have used FUSE observations of PNe to search for nebular O VI emission or absorption as a diagnostic of conduction layer to ensure the presence of hot interior gas. Three PNe showing nebular O VI, namely IC 418, NGC 2392, and NGC 6826, have been selected for Chandra observations and diffuse X-ray emission is indeed detected in each of th"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1302.3886","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":"1302.3886","created_at":"2026-05-18T01:51:36.161843+00:00"},{"alias_kind":"arxiv_version","alias_value":"1302.3886v1","created_at":"2026-05-18T01:51:36.161843+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1302.3886","created_at":"2026-05-18T01:51:36.161843+00:00"},{"alias_kind":"pith_short_12","alias_value":"FPBNUNFV6HUM","created_at":"2026-05-18T12:27:45.050594+00:00"},{"alias_kind":"pith_short_16","alias_value":"FPBNUNFV6HUMUL46","created_at":"2026-05-18T12:27:45.050594+00:00"},{"alias_kind":"pith_short_8","alias_value":"FPBNUNFV","created_at":"2026-05-18T12:27:45.050594+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/FPBNUNFV6HUMUL463M6HNFY7AM","json":"https://pith.science/pith/FPBNUNFV6HUMUL463M6HNFY7AM.json","graph_json":"https://pith.science/api/pith-number/FPBNUNFV6HUMUL463M6HNFY7AM/graph.json","events_json":"https://pith.science/api/pith-number/FPBNUNFV6HUMUL463M6HNFY7AM/events.json","paper":"https://pith.science/paper/FPBNUNFV"},"agent_actions":{"view_html":"https://pith.science/pith/FPBNUNFV6HUMUL463M6HNFY7AM","download_json":"https://pith.science/pith/FPBNUNFV6HUMUL463M6HNFY7AM.json","view_paper":"https://pith.science/paper/FPBNUNFV","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1302.3886&json=true","fetch_graph":"https://pith.science/api/pith-number/FPBNUNFV6HUMUL463M6HNFY7AM/graph.json","fetch_events":"https://pith.science/api/pith-number/FPBNUNFV6HUMUL463M6HNFY7AM/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/FPBNUNFV6HUMUL463M6HNFY7AM/action/timestamp_anchor","attest_storage":"https://pith.science/pith/FPBNUNFV6HUMUL463M6HNFY7AM/action/storage_attestation","attest_author":"https://pith.science/pith/FPBNUNFV6HUMUL463M6HNFY7AM/action/author_attestation","sign_citation":"https://pith.science/pith/FPBNUNFV6HUMUL463M6HNFY7AM/action/citation_signature","submit_replication":"https://pith.science/pith/FPBNUNFV6HUMUL463M6HNFY7AM/action/replication_record"}},"created_at":"2026-05-18T01:51:36.161843+00:00","updated_at":"2026-05-18T01:51:36.161843+00:00"}