{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:EEJ3WVOJVVIDFCU3A74MWI2AEF","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"c83be70cd3061a66180fa63d99f77f425d2b43b46174484205d9dbc8397b7cb3","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-10-25T14:27:28Z","title_canon_sha256":"be11a3fa346b0c99ee846e405e860e83c34266ab8451fba539d0ad490fbd4a6c"},"schema_version":"1.0","source":{"id":"1110.5514","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1110.5514","created_at":"2026-05-18T02:00:04Z"},{"alias_kind":"arxiv_version","alias_value":"1110.5514v1","created_at":"2026-05-18T02:00:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1110.5514","created_at":"2026-05-18T02:00:04Z"},{"alias_kind":"pith_short_12","alias_value":"EEJ3WVOJVVID","created_at":"2026-05-18T12:26:28Z"},{"alias_kind":"pith_short_16","alias_value":"EEJ3WVOJVVIDFCU3","created_at":"2026-05-18T12:26:28Z"},{"alias_kind":"pith_short_8","alias_value":"EEJ3WVOJ","created_at":"2026-05-18T12:26:28Z"}],"graph_snapshots":[{"event_id":"sha256:f62d97536d6c47149f0ee704fc6ed3ce4410ef6c6497db6655b761ffcf4ecf30","target":"graph","created_at":"2026-05-18T02:00:04Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"We report the discovery of three new cases of QSOs acting as strong gravitational lenses on background emission line galaxies: SDSS J0827+5224 (zQSO = 0.293, zs = 0.412), SDSS J0919+2720 (zQSO = 0.209, zs = 0.558), SDSS J1005+4016 (zQSO = 0.230, zs = 0.441). The selection was carried out using a sample of 22,298 SDSS spectra displaying at least four emission lines at a redshift beyond that of the foreground QSO. The lensing nature is confirmed from Keck imaging and spectroscopy, as well as from HST/WFC3 imaging in the F475W and F814W filters. Two of the QSOs have face-on spiral host galaxies a","authors_text":"AIfA), A. Mahabal (Caltech), C. Faure (EPFL), D. Sluse (ZAH, D. Stern (JPL), F. Courbin (EPFL), F. Rerat (EPFL), G. Meylan (EPFL), M. Tewes (EPFL), R. Dheeraj (Maryland), S. G. Djorgovski (Caltech), T. Boroson (NOAO)","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-10-25T14:27:28Z","title":"Three QSOs acting as strong gravitational lenses"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1110.5514","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:e033ea8f01a15ad56d32af15a7cb0974dd3a00cd65d298b9ffa6675ddba7f305","target":"record","created_at":"2026-05-18T02:00:04Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"c83be70cd3061a66180fa63d99f77f425d2b43b46174484205d9dbc8397b7cb3","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-10-25T14:27:28Z","title_canon_sha256":"be11a3fa346b0c99ee846e405e860e83c34266ab8451fba539d0ad490fbd4a6c"},"schema_version":"1.0","source":{"id":"1110.5514","kind":"arxiv","version":1}},"canonical_sha256":"2113bb55c9ad50328a9b07f8cb23402160ebaa29805d6830ee52182591632a0e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2113bb55c9ad50328a9b07f8cb23402160ebaa29805d6830ee52182591632a0e","first_computed_at":"2026-05-18T02:00:04.092648Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:00:04.092648Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"DYRdzHysTTv9mw74nhYggKKTixpm4uDxa2Nlv9fPSF+D0+U8M6ndqV2t8EJtPNW+o0rWbDypYwyBAiaw10p8CA==","signature_status":"signed_v1","signed_at":"2026-05-18T02:00:04.093235Z","signed_message":"canonical_sha256_bytes"},"source_id":"1110.5514","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e033ea8f01a15ad56d32af15a7cb0974dd3a00cd65d298b9ffa6675ddba7f305","sha256:f62d97536d6c47149f0ee704fc6ed3ce4410ef6c6497db6655b761ffcf4ecf30"],"state_sha256":"65dca7b583eb8057c4dee96bbcbeb29e5ab0e5f0984c08c5f909fc5ac8cf53cc"}