{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2025:FO5ZHBBMRTZM4SJULPD4HVPMT6","short_pith_number":"pith:FO5ZHBBM","schema_version":"1.0","canonical_sha256":"2bbb93842c8cf2ce49345bc7c3d5ec9faf4f9feb28897e6da42c6653c180714f","source":{"kind":"arxiv","id":"2503.10180","version":2},"attestation_state":"computed","paper":{"title":"Optical+NIR analysis of a Newly Confirmed Einstein ring at z$\\sim$1 from the Kilo-Degree Survey: Dark matter fraction, total and dark matter density slope and IMF","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Alexey Sergeyev, Chiara Spiniello, Crescenzo Tortora, Francesco La Barbera, Giuseppe D Ago, Haicheng Feng, Hui Li, Kai Zhu, Koen Kuijken, Leon V. E. Koopmans, Liang Gao, Linghua Xie, Mario Radovich, Nicola R. Napolitano, Ran Li, Rui Li, Vyacheslav N. Shalyapin, Xiaotong Guo, Zhiqi Huang","submitted_at":"2025-03-13T09:08:24Z","abstract_excerpt":"We report the spectroscopic confirmation of a bright blue Einstein ring in the Kilo Degree Survey (KiDS) footprint: the Einstein ``blue eye''. Spectroscopic data from X-Shooter at the Very Large Telescope (VLT) show that the lens is a typical early-type galaxy (ETG) at $z_l=0.9906$, while the background source is a Ly$\\alpha$ emitter at $z_s=2.823$. The reference lens modeling was performed on a high-resolution $Y-$band adaptive-optics image from HAWK-I at VLT. Assuming a singular isothermal ellipsoid (SIE) total mass density profile, we inferred an Einstein radius $R_{Ein}=10.47 \\pm 0.06$ kpc"},"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":"2503.10180","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2025-03-13T09:08:24Z","cross_cats_sorted":[],"title_canon_sha256":"455be0580e913fe760e2126ac3143a39ab98f7c435eae479be92970e924aa14c","abstract_canon_sha256":"781bbc17037cbd42db08fef50b90d95cfedae81ee3453ea228b9e68cdf25bda5"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T12:02:42.086144Z","signature_b64":"3UcSVdIskclvt/J2rhNvhaXGZGUqn/V0gWWasBQLQs00O9TecMZp/7V85RqV/mLflllyYlAinNJg/X2cIDD7Bw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2bbb93842c8cf2ce49345bc7c3d5ec9faf4f9feb28897e6da42c6653c180714f","last_reissued_at":"2026-07-05T12:02:42.085607Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T12:02:42.085607Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Optical+NIR analysis of a Newly Confirmed Einstein ring at z$\\sim$1 from the Kilo-Degree Survey: Dark matter fraction, total and dark matter density slope and IMF","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Alexey Sergeyev, Chiara Spiniello, Crescenzo Tortora, Francesco La Barbera, Giuseppe D Ago, Haicheng Feng, Hui Li, Kai Zhu, Koen Kuijken, Leon V. E. Koopmans, Liang Gao, Linghua Xie, Mario Radovich, Nicola R. Napolitano, Ran Li, Rui Li, Vyacheslav N. Shalyapin, Xiaotong Guo, Zhiqi Huang","submitted_at":"2025-03-13T09:08:24Z","abstract_excerpt":"We report the spectroscopic confirmation of a bright blue Einstein ring in the Kilo Degree Survey (KiDS) footprint: the Einstein ``blue eye''. Spectroscopic data from X-Shooter at the Very Large Telescope (VLT) show that the lens is a typical early-type galaxy (ETG) at $z_l=0.9906$, while the background source is a Ly$\\alpha$ emitter at $z_s=2.823$. The reference lens modeling was performed on a high-resolution $Y-$band adaptive-optics image from HAWK-I at VLT. Assuming a singular isothermal ellipsoid (SIE) total mass density profile, we inferred an Einstein radius $R_{Ein}=10.47 \\pm 0.06$ kpc"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2503.10180","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/2503.10180/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":"2503.10180","created_at":"2026-07-05T12:02:42.085661+00:00"},{"alias_kind":"arxiv_version","alias_value":"2503.10180v2","created_at":"2026-07-05T12:02:42.085661+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2503.10180","created_at":"2026-07-05T12:02:42.085661+00:00"},{"alias_kind":"pith_short_12","alias_value":"FO5ZHBBMRTZM","created_at":"2026-07-05T12:02:42.085661+00:00"},{"alias_kind":"pith_short_16","alias_value":"FO5ZHBBMRTZM4SJU","created_at":"2026-07-05T12:02:42.085661+00:00"},{"alias_kind":"pith_short_8","alias_value":"FO5ZHBBM","created_at":"2026-07-05T12:02:42.085661+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/FO5ZHBBMRTZM4SJULPD4HVPMT6","json":"https://pith.science/pith/FO5ZHBBMRTZM4SJULPD4HVPMT6.json","graph_json":"https://pith.science/api/pith-number/FO5ZHBBMRTZM4SJULPD4HVPMT6/graph.json","events_json":"https://pith.science/api/pith-number/FO5ZHBBMRTZM4SJULPD4HVPMT6/events.json","paper":"https://pith.science/paper/FO5ZHBBM"},"agent_actions":{"view_html":"https://pith.science/pith/FO5ZHBBMRTZM4SJULPD4HVPMT6","download_json":"https://pith.science/pith/FO5ZHBBMRTZM4SJULPD4HVPMT6.json","view_paper":"https://pith.science/paper/FO5ZHBBM","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2503.10180&json=true","fetch_graph":"https://pith.science/api/pith-number/FO5ZHBBMRTZM4SJULPD4HVPMT6/graph.json","fetch_events":"https://pith.science/api/pith-number/FO5ZHBBMRTZM4SJULPD4HVPMT6/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/FO5ZHBBMRTZM4SJULPD4HVPMT6/action/timestamp_anchor","attest_storage":"https://pith.science/pith/FO5ZHBBMRTZM4SJULPD4HVPMT6/action/storage_attestation","attest_author":"https://pith.science/pith/FO5ZHBBMRTZM4SJULPD4HVPMT6/action/author_attestation","sign_citation":"https://pith.science/pith/FO5ZHBBMRTZM4SJULPD4HVPMT6/action/citation_signature","submit_replication":"https://pith.science/pith/FO5ZHBBMRTZM4SJULPD4HVPMT6/action/replication_record"}},"created_at":"2026-07-05T12:02:42.085661+00:00","updated_at":"2026-07-05T12:02:42.085661+00:00"}