{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:5SJNXRLQMYZRCLE7ZOQGR2VM5P","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":"30b9130f0f891647de550d77be50a4ce2ee6903906a032c4abc63e1cd5ac896d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-12-18T09:16:09Z","title_canon_sha256":"a9c585b12c19b62267f7ca186b8679a8d4750511228fbf546329b97b89954e66"},"schema_version":"1.0","source":{"id":"1512.05877","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1512.05877","created_at":"2026-05-18T01:20:40Z"},{"alias_kind":"arxiv_version","alias_value":"1512.05877v1","created_at":"2026-05-18T01:20:40Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1512.05877","created_at":"2026-05-18T01:20:40Z"},{"alias_kind":"pith_short_12","alias_value":"5SJNXRLQMYZR","created_at":"2026-05-18T12:29:07Z"},{"alias_kind":"pith_short_16","alias_value":"5SJNXRLQMYZRCLE7","created_at":"2026-05-18T12:29:07Z"},{"alias_kind":"pith_short_8","alias_value":"5SJNXRLQ","created_at":"2026-05-18T12:29:07Z"}],"graph_snapshots":[{"event_id":"sha256:956c78ebe8661a58ec7e06272f2b715cc96540b06a98363e8983ffd0f182d142","target":"graph","created_at":"2026-05-18T01:20:40Z","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 present Keck/ESI long-slit spectroscopy of SBS 1421+511, a system consisting of a quasar at z = 0.276 and an extended source 3\" northern to the quasar. The quasar shows a blue-skewed profile of Balmer broad emission lines, which can be well modeled as emissions from a circular disk with a blueshift velocity of ~1400 km/s. The blueshift is better interpreted as resulting from a recoiling active black hole than from a super-massive black hole binary, since the line profile almost kept steady over one decade in the quasar rest-frame. Alternative interpretations are possible as well, such as em","authors_text":"Hongyan Zhou, Jian Ge, Jingzhe Ma, Lei Hao, Luming Sun, Peng Jiang, Shaohua Zhang, Tuo Ji, Xinwen Shu","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-12-18T09:16:09Z","title":"Keck/ESI Long-slit Spectroscopy of SBS 1421+511: A Recoiling Quasar Nucleus in An Active Galaxy Pair?"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1512.05877","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:bffbbeff286eb9d2f2205d6b83b74de0ee469ac081153daccbed4757bdf6cb37","target":"record","created_at":"2026-05-18T01:20:40Z","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":"30b9130f0f891647de550d77be50a4ce2ee6903906a032c4abc63e1cd5ac896d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-12-18T09:16:09Z","title_canon_sha256":"a9c585b12c19b62267f7ca186b8679a8d4750511228fbf546329b97b89954e66"},"schema_version":"1.0","source":{"id":"1512.05877","kind":"arxiv","version":1}},"canonical_sha256":"ec92dbc5706633112c9fcba068eaacebc7be4815279447e16006c7a785fccf20","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ec92dbc5706633112c9fcba068eaacebc7be4815279447e16006c7a785fccf20","first_computed_at":"2026-05-18T01:20:40.931998Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:20:40.931998Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Cc/b0XuyrnAuVPmFfwzasNkSjNOn2TgnNwJ9pN8MdYhwEHkGJedeg1F3domUK+Z+KCLeisp9Aqe0p2zVVQ3SBw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:20:40.932383Z","signed_message":"canonical_sha256_bytes"},"source_id":"1512.05877","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:bffbbeff286eb9d2f2205d6b83b74de0ee469ac081153daccbed4757bdf6cb37","sha256:956c78ebe8661a58ec7e06272f2b715cc96540b06a98363e8983ffd0f182d142"],"state_sha256":"e3cc2ecceef69e46f6065aaab281f6a311a3baa7676deaee6c537d2a9f588dd2"}