{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2020:SUDUDAMK27KKCSMBJ3GSF4BB6F","short_pith_number":"pith:SUDUDAMK","schema_version":"1.0","canonical_sha256":"950741818ad7d4a149814ecd22f021f1481057f37587d6f8fd457fd40f9cd937","source":{"kind":"arxiv","id":"2002.02978","version":2},"attestation_state":"computed","paper":{"title":"The X-Ray Cavity Around Hotspot E in Cygnus A: Tunneled by a Deflected Jet","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"Amalya C. Johnson, Bradford Snios, Lerato Sebokolodi, Martijn de Vries, Michael W. Wise, Paul E. J. Nulsen, Ralph P. Kraft, Richard A. Perley","submitted_at":"2020-02-07T19:00:25Z","abstract_excerpt":"The powerful FR II radio galaxy Cygnus A exhibits primary and secondary hotspots in each lobe. A 2 Msec Chandra X-ray image of Cygnus A has revealed an approximately circular hole, with a radius of 3.9 kpc, centered on the primary hotspot in the eastern radio lobe, hotspot E. We infer the distribution of X-ray emission on our line-of-sight from an X-ray surface brightness profile of the radio lobe adjacent to the hole and use it to argue that the hole is excavated from the radio lobe. The surface brightness profile of the hole implies a depth at least 1.7 $\\pm$ 0.3 times greater than its proje"},"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":"2002.02978","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2020-02-07T19:00:25Z","cross_cats_sorted":[],"title_canon_sha256":"49ebb0d9a28666a69048dfe388dddd0218a991ec55563607dbb68ad9e9b13f42","abstract_canon_sha256":"ca643f550c023525e703fe7c0ff5ac0bd269a2692dacbf2d3196392f596dbc3a"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T00:50:13.866130Z","signature_b64":"jO9l3iMplH25YJudoJS6Q7Sxqz2Y3PQJwKcFCw0jUqqk8ACE15J2gXeL6tI5RK/kZlu03Q8fwjktG/5cRFNVCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"950741818ad7d4a149814ecd22f021f1481057f37587d6f8fd457fd40f9cd937","last_reissued_at":"2026-07-05T00:50:13.865683Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T00:50:13.865683Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"The X-Ray Cavity Around Hotspot E in Cygnus A: Tunneled by a Deflected Jet","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"Amalya C. Johnson, Bradford Snios, Lerato Sebokolodi, Martijn de Vries, Michael W. Wise, Paul E. J. Nulsen, Ralph P. Kraft, Richard A. Perley","submitted_at":"2020-02-07T19:00:25Z","abstract_excerpt":"The powerful FR II radio galaxy Cygnus A exhibits primary and secondary hotspots in each lobe. A 2 Msec Chandra X-ray image of Cygnus A has revealed an approximately circular hole, with a radius of 3.9 kpc, centered on the primary hotspot in the eastern radio lobe, hotspot E. We infer the distribution of X-ray emission on our line-of-sight from an X-ray surface brightness profile of the radio lobe adjacent to the hole and use it to argue that the hole is excavated from the radio lobe. The surface brightness profile of the hole implies a depth at least 1.7 $\\pm$ 0.3 times greater than its proje"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2002.02978","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/2002.02978/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":"2002.02978","created_at":"2026-07-05T00:50:13.865755+00:00"},{"alias_kind":"arxiv_version","alias_value":"2002.02978v2","created_at":"2026-07-05T00:50:13.865755+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2002.02978","created_at":"2026-07-05T00:50:13.865755+00:00"},{"alias_kind":"pith_short_12","alias_value":"SUDUDAMK27KK","created_at":"2026-07-05T00:50:13.865755+00:00"},{"alias_kind":"pith_short_16","alias_value":"SUDUDAMK27KKCSMB","created_at":"2026-07-05T00:50:13.865755+00:00"},{"alias_kind":"pith_short_8","alias_value":"SUDUDAMK","created_at":"2026-07-05T00:50:13.865755+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/SUDUDAMK27KKCSMBJ3GSF4BB6F","json":"https://pith.science/pith/SUDUDAMK27KKCSMBJ3GSF4BB6F.json","graph_json":"https://pith.science/api/pith-number/SUDUDAMK27KKCSMBJ3GSF4BB6F/graph.json","events_json":"https://pith.science/api/pith-number/SUDUDAMK27KKCSMBJ3GSF4BB6F/events.json","paper":"https://pith.science/paper/SUDUDAMK"},"agent_actions":{"view_html":"https://pith.science/pith/SUDUDAMK27KKCSMBJ3GSF4BB6F","download_json":"https://pith.science/pith/SUDUDAMK27KKCSMBJ3GSF4BB6F.json","view_paper":"https://pith.science/paper/SUDUDAMK","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2002.02978&json=true","fetch_graph":"https://pith.science/api/pith-number/SUDUDAMK27KKCSMBJ3GSF4BB6F/graph.json","fetch_events":"https://pith.science/api/pith-number/SUDUDAMK27KKCSMBJ3GSF4BB6F/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/SUDUDAMK27KKCSMBJ3GSF4BB6F/action/timestamp_anchor","attest_storage":"https://pith.science/pith/SUDUDAMK27KKCSMBJ3GSF4BB6F/action/storage_attestation","attest_author":"https://pith.science/pith/SUDUDAMK27KKCSMBJ3GSF4BB6F/action/author_attestation","sign_citation":"https://pith.science/pith/SUDUDAMK27KKCSMBJ3GSF4BB6F/action/citation_signature","submit_replication":"https://pith.science/pith/SUDUDAMK27KKCSMBJ3GSF4BB6F/action/replication_record"}},"created_at":"2026-07-05T00:50:13.865755+00:00","updated_at":"2026-07-05T00:50:13.865755+00:00"}