{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2019:BVLKSYDCZGUANNFL5A3OQUD6XO","short_pith_number":"pith:BVLKSYDC","schema_version":"1.0","canonical_sha256":"0d56a96062c9a806b4abe836e8507ebbbcbbeac1165e569944cd9b34771f7998","source":{"kind":"arxiv","id":"1912.01743","version":2},"attestation_state":"computed","paper":{"title":"Apparent superluminal core expansion and limb brightening in the candidate neutrino blazar TXS 0506+056","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.HE"],"primary_cat":"astro-ph.GA","authors_text":"B. Boccardi (MPIfR Bonn), Catholic U. America), E. Ros (MPIfR Bonn), F. Krau{\\ss} (Penn State Univ.), H.-M. Cao (IRA-INAF Bologna), M. Giroletti (IRA-INAF Bologna), M. Kadler (U. W\\\"urzburg), M. Perucho (U. Val\\`encia), R. Ojha (NASA/GSFC, U. Maryland","submitted_at":"2019-12-03T23:46:27Z","abstract_excerpt":"IceCube has reported a very-high-energy neutrino (IceCube-170922A) in a region containing the blazar TXS 0506+056. Correlated {\\gamma}-ray activity has led to the first high-probability association of a high-energy neutrino with an extragalactic source. This blazar has been found to be in a radio outburst during the neutrino event. We have performed target-of-opportunity VLBI imaging observations at 43 GHz frequency with the VLBA two and eight months, respectively, after the neutrino event. We produced two images of TXS 0506+056 with angular resolutions of (0.2x1.1) mas and (0.2x0.5) mas, resp"},"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":"1912.01743","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-12-03T23:46:27Z","cross_cats_sorted":["astro-ph.HE"],"title_canon_sha256":"0a78b1a09a0de408dcb4ec3809a67e15921aa53928325ee2271bcdc34433b310","abstract_canon_sha256":"008df671d661889eb1d1fd5a53af93bc6bafd4e296d9ca9b23c07eac26de475b"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T00:28:15.737524Z","signature_b64":"T1yxFPsFT6hmvgme0RheqeGmDSvlItshvaHE95d2MMAkgswUCcNif5Pp8TiUs8NZV1C4EYcE6LbGuH4nNfKTAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"0d56a96062c9a806b4abe836e8507ebbbcbbeac1165e569944cd9b34771f7998","last_reissued_at":"2026-07-05T00:28:15.737070Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T00:28:15.737070Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Apparent superluminal core expansion and limb brightening in the candidate neutrino blazar TXS 0506+056","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.HE"],"primary_cat":"astro-ph.GA","authors_text":"B. Boccardi (MPIfR Bonn), Catholic U. America), E. Ros (MPIfR Bonn), F. Krau{\\ss} (Penn State Univ.), H.-M. Cao (IRA-INAF Bologna), M. Giroletti (IRA-INAF Bologna), M. Kadler (U. W\\\"urzburg), M. Perucho (U. Val\\`encia), R. Ojha (NASA/GSFC, U. Maryland","submitted_at":"2019-12-03T23:46:27Z","abstract_excerpt":"IceCube has reported a very-high-energy neutrino (IceCube-170922A) in a region containing the blazar TXS 0506+056. Correlated {\\gamma}-ray activity has led to the first high-probability association of a high-energy neutrino with an extragalactic source. This blazar has been found to be in a radio outburst during the neutrino event. We have performed target-of-opportunity VLBI imaging observations at 43 GHz frequency with the VLBA two and eight months, respectively, after the neutrino event. We produced two images of TXS 0506+056 with angular resolutions of (0.2x1.1) mas and (0.2x0.5) mas, resp"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1912.01743","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/1912.01743/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":"1912.01743","created_at":"2026-07-05T00:28:15.737129+00:00"},{"alias_kind":"arxiv_version","alias_value":"1912.01743v2","created_at":"2026-07-05T00:28:15.737129+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1912.01743","created_at":"2026-07-05T00:28:15.737129+00:00"},{"alias_kind":"pith_short_12","alias_value":"BVLKSYDCZGUA","created_at":"2026-07-05T00:28:15.737129+00:00"},{"alias_kind":"pith_short_16","alias_value":"BVLKSYDCZGUANNFL","created_at":"2026-07-05T00:28:15.737129+00:00"},{"alias_kind":"pith_short_8","alias_value":"BVLKSYDC","created_at":"2026-07-05T00:28:15.737129+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":1,"internal_anchor_count":1,"sample":[{"citing_arxiv_id":"2606.30764","citing_title":"Active Galactic Nuclei as high-energy neutrino sources","ref_index":159,"is_internal_anchor":true}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/BVLKSYDCZGUANNFL5A3OQUD6XO","json":"https://pith.science/pith/BVLKSYDCZGUANNFL5A3OQUD6XO.json","graph_json":"https://pith.science/api/pith-number/BVLKSYDCZGUANNFL5A3OQUD6XO/graph.json","events_json":"https://pith.science/api/pith-number/BVLKSYDCZGUANNFL5A3OQUD6XO/events.json","paper":"https://pith.science/paper/BVLKSYDC"},"agent_actions":{"view_html":"https://pith.science/pith/BVLKSYDCZGUANNFL5A3OQUD6XO","download_json":"https://pith.science/pith/BVLKSYDCZGUANNFL5A3OQUD6XO.json","view_paper":"https://pith.science/paper/BVLKSYDC","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1912.01743&json=true","fetch_graph":"https://pith.science/api/pith-number/BVLKSYDCZGUANNFL5A3OQUD6XO/graph.json","fetch_events":"https://pith.science/api/pith-number/BVLKSYDCZGUANNFL5A3OQUD6XO/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/BVLKSYDCZGUANNFL5A3OQUD6XO/action/timestamp_anchor","attest_storage":"https://pith.science/pith/BVLKSYDCZGUANNFL5A3OQUD6XO/action/storage_attestation","attest_author":"https://pith.science/pith/BVLKSYDCZGUANNFL5A3OQUD6XO/action/author_attestation","sign_citation":"https://pith.science/pith/BVLKSYDCZGUANNFL5A3OQUD6XO/action/citation_signature","submit_replication":"https://pith.science/pith/BVLKSYDCZGUANNFL5A3OQUD6XO/action/replication_record"}},"created_at":"2026-07-05T00:28:15.737129+00:00","updated_at":"2026-07-05T00:28:15.737129+00:00"}