{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2011:ZG2TWBYLSWAAHPAWP7UBN7R5CQ","short_pith_number":"pith:ZG2TWBYL","schema_version":"1.0","canonical_sha256":"c9b53b070b958003bc167fe816fe3d143cecdb5482d05575d9a43eabf5f6d33f","source":{"kind":"arxiv","id":"1106.3205","version":1},"attestation_state":"computed","paper":{"title":"Multi-epoch parsec-scale observations of the blazar PKS 1510-089","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"D. Dallacasa, F. D'Ammando, G. Giovannini, M. Giroletti, M. Orienti, M. Tavani, S. Vercellone, T. Venturi","submitted_at":"2011-06-16T11:44:21Z","abstract_excerpt":"(Abridged) We investigate the flux density variability and changes in the parsec-scale radio structure of the flat spectrum radio quasar PKS 1510-089. This source was target of multi-epoch VLBI and Space-VLBI observations at 4.8, 8.4 and 22 GHz carried out between 1999 and 2001. The comparison of the parsec-scale structure observed at different epochs shows the presence of a non-stationary jet feature moving with a superluminal apparent velocity of 16.2c+-0.7c. Over three epochs at 8.4 GHz during this period the core flux density varies of about 50%, while the scatter in the jet flux density i"},"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":"1106.3205","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-06-16T11:44:21Z","cross_cats_sorted":[],"title_canon_sha256":"cc0c6fef3aff1b26fc39ac524419ba4fd9899f7f7453553317915b53cf0eaece","abstract_canon_sha256":"323fcd700e31b774e3b9a75801bd6ffae865223eec93cc2b181eae18befb6392"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:01:36.388390Z","signature_b64":"jdOi3HBx92Y6c0+Kw6x0koO0sz1uaC5HRHyh/fWBQbxSjIDkRcceEZzBBAwk6+p/VrCmhXxUoYLXz3+NkXEBAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c9b53b070b958003bc167fe816fe3d143cecdb5482d05575d9a43eabf5f6d33f","last_reissued_at":"2026-05-18T02:01:36.387676Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:01:36.387676Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Multi-epoch parsec-scale observations of the blazar PKS 1510-089","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"D. Dallacasa, F. D'Ammando, G. Giovannini, M. Giroletti, M. Orienti, M. Tavani, S. Vercellone, T. Venturi","submitted_at":"2011-06-16T11:44:21Z","abstract_excerpt":"(Abridged) We investigate the flux density variability and changes in the parsec-scale radio structure of the flat spectrum radio quasar PKS 1510-089. This source was target of multi-epoch VLBI and Space-VLBI observations at 4.8, 8.4 and 22 GHz carried out between 1999 and 2001. The comparison of the parsec-scale structure observed at different epochs shows the presence of a non-stationary jet feature moving with a superluminal apparent velocity of 16.2c+-0.7c. Over three epochs at 8.4 GHz during this period the core flux density varies of about 50%, while the scatter in the jet flux density i"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1106.3205","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":"1106.3205","created_at":"2026-05-18T02:01:36.387776+00:00"},{"alias_kind":"arxiv_version","alias_value":"1106.3205v1","created_at":"2026-05-18T02:01:36.387776+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1106.3205","created_at":"2026-05-18T02:01:36.387776+00:00"},{"alias_kind":"pith_short_12","alias_value":"ZG2TWBYLSWAA","created_at":"2026-05-18T12:26:47.523578+00:00"},{"alias_kind":"pith_short_16","alias_value":"ZG2TWBYLSWAAHPAW","created_at":"2026-05-18T12:26:47.523578+00:00"},{"alias_kind":"pith_short_8","alias_value":"ZG2TWBYL","created_at":"2026-05-18T12:26:47.523578+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/ZG2TWBYLSWAAHPAWP7UBN7R5CQ","json":"https://pith.science/pith/ZG2TWBYLSWAAHPAWP7UBN7R5CQ.json","graph_json":"https://pith.science/api/pith-number/ZG2TWBYLSWAAHPAWP7UBN7R5CQ/graph.json","events_json":"https://pith.science/api/pith-number/ZG2TWBYLSWAAHPAWP7UBN7R5CQ/events.json","paper":"https://pith.science/paper/ZG2TWBYL"},"agent_actions":{"view_html":"https://pith.science/pith/ZG2TWBYLSWAAHPAWP7UBN7R5CQ","download_json":"https://pith.science/pith/ZG2TWBYLSWAAHPAWP7UBN7R5CQ.json","view_paper":"https://pith.science/paper/ZG2TWBYL","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1106.3205&json=true","fetch_graph":"https://pith.science/api/pith-number/ZG2TWBYLSWAAHPAWP7UBN7R5CQ/graph.json","fetch_events":"https://pith.science/api/pith-number/ZG2TWBYLSWAAHPAWP7UBN7R5CQ/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/ZG2TWBYLSWAAHPAWP7UBN7R5CQ/action/timestamp_anchor","attest_storage":"https://pith.science/pith/ZG2TWBYLSWAAHPAWP7UBN7R5CQ/action/storage_attestation","attest_author":"https://pith.science/pith/ZG2TWBYLSWAAHPAWP7UBN7R5CQ/action/author_attestation","sign_citation":"https://pith.science/pith/ZG2TWBYLSWAAHPAWP7UBN7R5CQ/action/citation_signature","submit_replication":"https://pith.science/pith/ZG2TWBYLSWAAHPAWP7UBN7R5CQ/action/replication_record"}},"created_at":"2026-05-18T02:01:36.387776+00:00","updated_at":"2026-05-18T02:01:36.387776+00:00"}