{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2022:JKE7OEFRTJKMJZH76GLJXJ565W","short_pith_number":"pith:JKE7OEFR","schema_version":"1.0","canonical_sha256":"4a89f710b19a54c4e4fff1969ba7beed9cfbcb2e6db4707718ae1af0ebb3cd87","source":{"kind":"arxiv","id":"2207.03375","version":2},"attestation_state":"computed","paper":{"title":"A lensed radio jet at milli-arcsecond resolution I: Bayesian comparison of parametric lens models","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Christopher D. Fassnacht, Cristiana Spingola, Devon M. Powell, Hannah R. Stacey, J. P. McKean, Simona Vegetti","submitted_at":"2022-07-07T15:30:28Z","abstract_excerpt":"We investigate the mass structure of a strong gravitational lens galaxy at $z=0.350$, taking advantage of the milli-arcsecond (mas) angular resolution of very long baseline interferometric (VLBI) observations. In the first analysis of its kind at this resolution, we jointly infer the lens model parameters and pixellated radio source surface brightness. We consider several lens models of increasing complexity, starting from an elliptical power-law density profile. We extend this model to include angular multipole structures, a separate stellar mass component, additional nearby field galaxies, 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":"2207.03375","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2022-07-07T15:30:28Z","cross_cats_sorted":[],"title_canon_sha256":"898a5014301a941e490eef6195177c982740a997bd49a249757328f4e7dc8e12","abstract_canon_sha256":"5ba2514fd3e1ddb3442510d82c2cd1cc3fbbb8aa8e90d1b62e12d906e3e3e8e2"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T04:57:13.579633Z","signature_b64":"Of3i2/cZEIFBeDcOGDgdO6bknoSMNK8dzQ4udjAEK+SKgmm+VzzDqiLWWCLR8J3KCGfvIpIOSe/unbvRyftwDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"4a89f710b19a54c4e4fff1969ba7beed9cfbcb2e6db4707718ae1af0ebb3cd87","last_reissued_at":"2026-07-05T04:57:13.579092Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T04:57:13.579092Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"A lensed radio jet at milli-arcsecond resolution I: Bayesian comparison of parametric lens models","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Christopher D. Fassnacht, Cristiana Spingola, Devon M. Powell, Hannah R. Stacey, J. P. McKean, Simona Vegetti","submitted_at":"2022-07-07T15:30:28Z","abstract_excerpt":"We investigate the mass structure of a strong gravitational lens galaxy at $z=0.350$, taking advantage of the milli-arcsecond (mas) angular resolution of very long baseline interferometric (VLBI) observations. In the first analysis of its kind at this resolution, we jointly infer the lens model parameters and pixellated radio source surface brightness. We consider several lens models of increasing complexity, starting from an elliptical power-law density profile. We extend this model to include angular multipole structures, a separate stellar mass component, additional nearby field galaxies, a"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2207.03375","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/2207.03375/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":"2207.03375","created_at":"2026-07-05T04:57:13.579163+00:00"},{"alias_kind":"arxiv_version","alias_value":"2207.03375v2","created_at":"2026-07-05T04:57:13.579163+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2207.03375","created_at":"2026-07-05T04:57:13.579163+00:00"},{"alias_kind":"pith_short_12","alias_value":"JKE7OEFRTJKM","created_at":"2026-07-05T04:57:13.579163+00:00"},{"alias_kind":"pith_short_16","alias_value":"JKE7OEFRTJKMJZH7","created_at":"2026-07-05T04:57:13.579163+00:00"},{"alias_kind":"pith_short_8","alias_value":"JKE7OEFR","created_at":"2026-07-05T04:57:13.579163+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":1,"internal_anchor_count":1,"sample":[{"citing_arxiv_id":"2607.08576","citing_title":"Disentangling the dark and stellar mass through precise lens modelling of the JWST observation of lensed quasar WFI2033--4723","ref_index":108,"is_internal_anchor":true}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/JKE7OEFRTJKMJZH76GLJXJ565W","json":"https://pith.science/pith/JKE7OEFRTJKMJZH76GLJXJ565W.json","graph_json":"https://pith.science/api/pith-number/JKE7OEFRTJKMJZH76GLJXJ565W/graph.json","events_json":"https://pith.science/api/pith-number/JKE7OEFRTJKMJZH76GLJXJ565W/events.json","paper":"https://pith.science/paper/JKE7OEFR"},"agent_actions":{"view_html":"https://pith.science/pith/JKE7OEFRTJKMJZH76GLJXJ565W","download_json":"https://pith.science/pith/JKE7OEFRTJKMJZH76GLJXJ565W.json","view_paper":"https://pith.science/paper/JKE7OEFR","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2207.03375&json=true","fetch_graph":"https://pith.science/api/pith-number/JKE7OEFRTJKMJZH76GLJXJ565W/graph.json","fetch_events":"https://pith.science/api/pith-number/JKE7OEFRTJKMJZH76GLJXJ565W/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/JKE7OEFRTJKMJZH76GLJXJ565W/action/timestamp_anchor","attest_storage":"https://pith.science/pith/JKE7OEFRTJKMJZH76GLJXJ565W/action/storage_attestation","attest_author":"https://pith.science/pith/JKE7OEFRTJKMJZH76GLJXJ565W/action/author_attestation","sign_citation":"https://pith.science/pith/JKE7OEFRTJKMJZH76GLJXJ565W/action/citation_signature","submit_replication":"https://pith.science/pith/JKE7OEFRTJKMJZH76GLJXJ565W/action/replication_record"}},"created_at":"2026-07-05T04:57:13.579163+00:00","updated_at":"2026-07-05T04:57:13.579163+00:00"}