{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2018:LPNKA5C6KYKKJ5R3MD7MHCEJ5E","short_pith_number":"pith:LPNKA5C6","schema_version":"1.0","canonical_sha256":"5bdaa0745e5614a4f63b60fec38889e93e1351bb49289d3c7ed8016b6ef35a36","source":{"kind":"arxiv","id":"1803.10452","version":1},"attestation_state":"computed","paper":{"title":"Constraining the radio jet proper motion of the high-redshift quasar J2134-0419 at z=4.3","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.HE"],"primary_cat":"astro-ph.GA","authors_text":"D. Cseh, H.-M. Cao, I. M. Hook, J. Dennett-Thorpe, J. Yang, K. \\'E. Gab\\'anyi, K. Perger, L. I. Gurvits, R. T. Schilizzi, S. Britzen, S. Frey, T. An, X.-Y. Hong, Y. Zhang, Z. Paragi","submitted_at":"2018-03-28T08:19:35Z","abstract_excerpt":"To date, PMN J2134-0419 (at a redshift z=4.33) is the second most distant quasar known with a milliarcsecond-scale morphology permitting direct estimates of the jet proper motion. Based on two-epoch observations, we constrained its radio jet proper motion using the very long baseline interferometry (VLBI) technique. The observations were conducted with the European VLBI Network (EVN) at 5 GHz on 1999 November 26 and 2015 October 6. We imaged the central 10-pc scale radio jet emission and modeled its brightness distribution. By identifying a jet component at both epochs separated by 15.86 yr, a"},"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":"1803.10452","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-03-28T08:19:35Z","cross_cats_sorted":["astro-ph.HE"],"title_canon_sha256":"8cdd80f0c473f51bfa706fe36cd18679bcc6b416acd10976c086e8b0db4d21d8","abstract_canon_sha256":"a06061972b3f6a1ea4617ad92ce59ab450df598d82acb35eda34c45b0fd5217a"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:18:10.433835Z","signature_b64":"qj98pw6iOoz/5rQ/XaZEaUdP01svx+KHtgJm8Q8k8kOT3VJwMcuSf5L2YQIjixjyv+29prMGPBxhp68MoQUeCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"5bdaa0745e5614a4f63b60fec38889e93e1351bb49289d3c7ed8016b6ef35a36","last_reissued_at":"2026-05-18T00:18:10.433266Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:18:10.433266Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Constraining the radio jet proper motion of the high-redshift quasar J2134-0419 at z=4.3","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.HE"],"primary_cat":"astro-ph.GA","authors_text":"D. Cseh, H.-M. Cao, I. M. Hook, J. Dennett-Thorpe, J. Yang, K. \\'E. Gab\\'anyi, K. Perger, L. I. Gurvits, R. T. Schilizzi, S. Britzen, S. Frey, T. An, X.-Y. Hong, Y. Zhang, Z. Paragi","submitted_at":"2018-03-28T08:19:35Z","abstract_excerpt":"To date, PMN J2134-0419 (at a redshift z=4.33) is the second most distant quasar known with a milliarcsecond-scale morphology permitting direct estimates of the jet proper motion. Based on two-epoch observations, we constrained its radio jet proper motion using the very long baseline interferometry (VLBI) technique. The observations were conducted with the European VLBI Network (EVN) at 5 GHz on 1999 November 26 and 2015 October 6. We imaged the central 10-pc scale radio jet emission and modeled its brightness distribution. By identifying a jet component at both epochs separated by 15.86 yr, a"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1803.10452","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":"1803.10452","created_at":"2026-05-18T00:18:10.433358+00:00"},{"alias_kind":"arxiv_version","alias_value":"1803.10452v1","created_at":"2026-05-18T00:18:10.433358+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1803.10452","created_at":"2026-05-18T00:18:10.433358+00:00"},{"alias_kind":"pith_short_12","alias_value":"LPNKA5C6KYKK","created_at":"2026-05-18T12:32:37.024351+00:00"},{"alias_kind":"pith_short_16","alias_value":"LPNKA5C6KYKKJ5R3","created_at":"2026-05-18T12:32:37.024351+00:00"},{"alias_kind":"pith_short_8","alias_value":"LPNKA5C6","created_at":"2026-05-18T12:32:37.024351+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/LPNKA5C6KYKKJ5R3MD7MHCEJ5E","json":"https://pith.science/pith/LPNKA5C6KYKKJ5R3MD7MHCEJ5E.json","graph_json":"https://pith.science/api/pith-number/LPNKA5C6KYKKJ5R3MD7MHCEJ5E/graph.json","events_json":"https://pith.science/api/pith-number/LPNKA5C6KYKKJ5R3MD7MHCEJ5E/events.json","paper":"https://pith.science/paper/LPNKA5C6"},"agent_actions":{"view_html":"https://pith.science/pith/LPNKA5C6KYKKJ5R3MD7MHCEJ5E","download_json":"https://pith.science/pith/LPNKA5C6KYKKJ5R3MD7MHCEJ5E.json","view_paper":"https://pith.science/paper/LPNKA5C6","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1803.10452&json=true","fetch_graph":"https://pith.science/api/pith-number/LPNKA5C6KYKKJ5R3MD7MHCEJ5E/graph.json","fetch_events":"https://pith.science/api/pith-number/LPNKA5C6KYKKJ5R3MD7MHCEJ5E/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/LPNKA5C6KYKKJ5R3MD7MHCEJ5E/action/timestamp_anchor","attest_storage":"https://pith.science/pith/LPNKA5C6KYKKJ5R3MD7MHCEJ5E/action/storage_attestation","attest_author":"https://pith.science/pith/LPNKA5C6KYKKJ5R3MD7MHCEJ5E/action/author_attestation","sign_citation":"https://pith.science/pith/LPNKA5C6KYKKJ5R3MD7MHCEJ5E/action/citation_signature","submit_replication":"https://pith.science/pith/LPNKA5C6KYKKJ5R3MD7MHCEJ5E/action/replication_record"}},"created_at":"2026-05-18T00:18:10.433358+00:00","updated_at":"2026-05-18T00:18:10.433358+00:00"}