{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:WK7ANCZGCHGDVIKXMOBDNPKAHI","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":"3672ca2eb02473cb0feee2b64a20cbe0522c22abb343c3fa54bb4b5087b27f0d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-04-30T00:16:24Z","title_canon_sha256":"3323840fa384d4bff1a96b8c58305267662dbbc88ce29c63e37dec2af24de449"},"schema_version":"1.0","source":{"id":"1904.12998","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1904.12998","created_at":"2026-07-05T00:06:41Z"},{"alias_kind":"arxiv_version","alias_value":"1904.12998v2","created_at":"2026-07-05T00:06:41Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1904.12998","created_at":"2026-07-05T00:06:41Z"},{"alias_kind":"pith_short_12","alias_value":"WK7ANCZGCHGD","created_at":"2026-07-05T00:06:41Z"},{"alias_kind":"pith_short_16","alias_value":"WK7ANCZGCHGDVIKX","created_at":"2026-07-05T00:06:41Z"},{"alias_kind":"pith_short_8","alias_value":"WK7ANCZG","created_at":"2026-07-05T00:06:41Z"}],"graph_snapshots":[{"event_id":"sha256:c2af198dc8ae90e27382cffbfb40894427201df8005000c7a7ff0813a2a50eee","target":"graph","created_at":"2026-07-05T00:06:41Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/1904.12998/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We present Chandra ACIS-S X-ray imaging spectroscopy for five dual active galactic nucleus (AGN) candidates. Our targets were drawn from a sample of 1286 [O III]-selected AGN pairs systematically selected from the Sloan Digital Sky Survey Seventh Data Release. Each of the targets contains two nuclei separated by $\\sim$3-9 kpc in projection, both of which are optically classified as Type 2 (obscured) AGNs based on diagnostic ratios of the narrow emission lines. Combined with independent, empirical star formation rate estimates based on the host-galaxy stellar continua, the new Chandra X-ray obs","authors_text":"Hengxiao Guo, Meicun Hou, Paul J. Green, Xin Liu, Yue Shen, Zhiyuan Li","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-04-30T00:16:24Z","title":"Active Galactic Nucleus Pairs from the Sloan Digital Sky Survey. III. Chandra X-ray Observations Unveil Obscured Double Nuclei"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1904.12998","kind":"arxiv","version":2},"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":"sha256:49ea1bf33a399fcf4bb21556acbbdb635c9f28f78777f4b0052d6065d221a591","target":"record","created_at":"2026-07-05T00:06:41Z","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":"3672ca2eb02473cb0feee2b64a20cbe0522c22abb343c3fa54bb4b5087b27f0d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-04-30T00:16:24Z","title_canon_sha256":"3323840fa384d4bff1a96b8c58305267662dbbc88ce29c63e37dec2af24de449"},"schema_version":"1.0","source":{"id":"1904.12998","kind":"arxiv","version":2}},"canonical_sha256":"b2be068b2611cc3aa157638236bd403a33b4b46fa37690d76a35452006ea200f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b2be068b2611cc3aa157638236bd403a33b4b46fa37690d76a35452006ea200f","first_computed_at":"2026-07-05T00:06:41.929650Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T00:06:41.929650Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"+xjEujmqzFhkK9UGD64uZvF3vsNqzcD6eQq5nEjZ6DVuBPbCL0Z4LrL78N9ldR+B4P139KYxbVsBPgSQRs3fBg==","signature_status":"signed_v1","signed_at":"2026-07-05T00:06:41.930061Z","signed_message":"canonical_sha256_bytes"},"source_id":"1904.12998","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:49ea1bf33a399fcf4bb21556acbbdb635c9f28f78777f4b0052d6065d221a591","sha256:c2af198dc8ae90e27382cffbfb40894427201df8005000c7a7ff0813a2a50eee"],"state_sha256":"6a79240ba8655fc137c379fe15fadc285758dd75f9f55309f8fce7d57611241e"}