{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:DPU5AZD3AB6H5BGMT5QESHPHL5","short_pith_number":"pith:DPU5AZD3","canonical_record":{"source":{"id":"1810.09465","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2018-10-22T18:00:09Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"62b02dbc210fc177a26bddbf96729a95fd6e84209371be3d1979d395c5916886","abstract_canon_sha256":"2e50128eddebbc50468534cb8860ef3f11d1de07d717b389477acf403abf5108"},"schema_version":"1.0"},"canonical_sha256":"1be9d0647b007c7e84cc9f60491de75f5acd31292a99a438b60456b152783bc3","source":{"kind":"arxiv","id":"1810.09465","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1810.09465","created_at":"2026-05-17T23:59:04Z"},{"alias_kind":"arxiv_version","alias_value":"1810.09465v1","created_at":"2026-05-17T23:59:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1810.09465","created_at":"2026-05-17T23:59:04Z"},{"alias_kind":"pith_short_12","alias_value":"DPU5AZD3AB6H","created_at":"2026-05-18T12:32:19Z"},{"alias_kind":"pith_short_16","alias_value":"DPU5AZD3AB6H5BGM","created_at":"2026-05-18T12:32:19Z"},{"alias_kind":"pith_short_8","alias_value":"DPU5AZD3","created_at":"2026-05-18T12:32:19Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:DPU5AZD3AB6H5BGMT5QESHPHL5","target":"record","payload":{"canonical_record":{"source":{"id":"1810.09465","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2018-10-22T18:00:09Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"62b02dbc210fc177a26bddbf96729a95fd6e84209371be3d1979d395c5916886","abstract_canon_sha256":"2e50128eddebbc50468534cb8860ef3f11d1de07d717b389477acf403abf5108"},"schema_version":"1.0"},"canonical_sha256":"1be9d0647b007c7e84cc9f60491de75f5acd31292a99a438b60456b152783bc3","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:59:04.433625Z","signature_b64":"9qJQNSjxwAHAo9PO5S5WswToxtuirYiIOFOz1FNgNkrC3Cnd2jg0PKCGwNHwgTLLfoay/enQZXr8jZFo4MwQBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"1be9d0647b007c7e84cc9f60491de75f5acd31292a99a438b60456b152783bc3","last_reissued_at":"2026-05-17T23:59:04.433120Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:59:04.433120Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1810.09465","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-17T23:59:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"pCjFunC7PKOlvZfg1eBYBlJs+8cQY3OFCMpkPVYvzfQzJ3n/YEUWQe+3FdNBJkjfjhcN9lwZZ5Zh+1QL4lKNDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-09T10:21:16.424560Z"},"content_sha256":"d28a04f66f355aae7e6ddd5545057450677708953074306500a9c0d74f6bb8f3","schema_version":"1.0","event_id":"sha256:d28a04f66f355aae7e6ddd5545057450677708953074306500a9c0d74f6bb8f3"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:DPU5AZD3AB6H5BGMT5QESHPHL5","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Variability-selected low-luminosity active galactic nuclei candidates in the 7 Ms Chandra Deep Field-South","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.HE","authors_text":"A. M. Koekemoer, B. D. Lehmer, B. Luo, C. Vignali, D. P. Schneider, F. Vito, G. Yang, J. X. Wang, M. Paolillo, N. Ding, O. Shemmer, P. Tozzi, Q. S. Gu, W. N. Brandt, X. C. Zheng, Y. Q. Xue","submitted_at":"2018-10-22T18:00:09Z","abstract_excerpt":"In deep X-ray surveys, active galactic nuclei (AGNs) with a broad range of luminosities have been identified. However, cosmologically distant low-luminosity AGN (LLAGN, $L_{\\mathrm{X}} \\lesssim 10^{42}$ erg s$^{-1}$) identification still poses a challenge due to significant contamination from host galaxies. Based on the 7 Ms Chandra Deep Field-South (CDF-S) survey, the longest timescale ($\\sim 17$ years) deep X-ray survey to date, we utilize an X-ray variability selection technique to search for LLAGNs that remain unidentified among the CDF-S X-ray sources. We find 13 variable sources from 110"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1810.09465","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-17T23:59:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"7HhruOUqbC/p/d/nXBQWbNdCm8g8Lg9YhuyLPkMXL3l890RRyzIO6ty4vB8mak00A5euball11FowNXj21QrCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-09T10:21:16.424901Z"},"content_sha256":"5ab7c6577cd93fdfb12c39269f6edc81a25d14de1b0870b50626c8329ec29a1d","schema_version":"1.0","event_id":"sha256:5ab7c6577cd93fdfb12c39269f6edc81a25d14de1b0870b50626c8329ec29a1d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/DPU5AZD3AB6H5BGMT5QESHPHL5/bundle.json","state_url":"https://pith.science/pith/DPU5AZD3AB6H5BGMT5QESHPHL5/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/DPU5AZD3AB6H5BGMT5QESHPHL5/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-06-09T10:21:16Z","links":{"resolver":"https://pith.science/pith/DPU5AZD3AB6H5BGMT5QESHPHL5","bundle":"https://pith.science/pith/DPU5AZD3AB6H5BGMT5QESHPHL5/bundle.json","state":"https://pith.science/pith/DPU5AZD3AB6H5BGMT5QESHPHL5/state.json","well_known_bundle":"https://pith.science/.well-known/pith/DPU5AZD3AB6H5BGMT5QESHPHL5/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:DPU5AZD3AB6H5BGMT5QESHPHL5","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":"2e50128eddebbc50468534cb8860ef3f11d1de07d717b389477acf403abf5108","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2018-10-22T18:00:09Z","title_canon_sha256":"62b02dbc210fc177a26bddbf96729a95fd6e84209371be3d1979d395c5916886"},"schema_version":"1.0","source":{"id":"1810.09465","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1810.09465","created_at":"2026-05-17T23:59:04Z"},{"alias_kind":"arxiv_version","alias_value":"1810.09465v1","created_at":"2026-05-17T23:59:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1810.09465","created_at":"2026-05-17T23:59:04Z"},{"alias_kind":"pith_short_12","alias_value":"DPU5AZD3AB6H","created_at":"2026-05-18T12:32:19Z"},{"alias_kind":"pith_short_16","alias_value":"DPU5AZD3AB6H5BGM","created_at":"2026-05-18T12:32:19Z"},{"alias_kind":"pith_short_8","alias_value":"DPU5AZD3","created_at":"2026-05-18T12:32:19Z"}],"graph_snapshots":[{"event_id":"sha256:5ab7c6577cd93fdfb12c39269f6edc81a25d14de1b0870b50626c8329ec29a1d","target":"graph","created_at":"2026-05-17T23:59:04Z","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":"In deep X-ray surveys, active galactic nuclei (AGNs) with a broad range of luminosities have been identified. However, cosmologically distant low-luminosity AGN (LLAGN, $L_{\\mathrm{X}} \\lesssim 10^{42}$ erg s$^{-1}$) identification still poses a challenge due to significant contamination from host galaxies. Based on the 7 Ms Chandra Deep Field-South (CDF-S) survey, the longest timescale ($\\sim 17$ years) deep X-ray survey to date, we utilize an X-ray variability selection technique to search for LLAGNs that remain unidentified among the CDF-S X-ray sources. We find 13 variable sources from 110","authors_text":"A. M. Koekemoer, B. D. Lehmer, B. Luo, C. Vignali, D. P. Schneider, F. Vito, G. Yang, J. X. Wang, M. Paolillo, N. Ding, O. Shemmer, P. Tozzi, Q. S. Gu, W. N. Brandt, X. C. Zheng, Y. Q. Xue","cross_cats":["astro-ph.GA"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2018-10-22T18:00:09Z","title":"Variability-selected low-luminosity active galactic nuclei candidates in the 7 Ms Chandra Deep Field-South"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1810.09465","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:d28a04f66f355aae7e6ddd5545057450677708953074306500a9c0d74f6bb8f3","target":"record","created_at":"2026-05-17T23:59:04Z","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":"2e50128eddebbc50468534cb8860ef3f11d1de07d717b389477acf403abf5108","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2018-10-22T18:00:09Z","title_canon_sha256":"62b02dbc210fc177a26bddbf96729a95fd6e84209371be3d1979d395c5916886"},"schema_version":"1.0","source":{"id":"1810.09465","kind":"arxiv","version":1}},"canonical_sha256":"1be9d0647b007c7e84cc9f60491de75f5acd31292a99a438b60456b152783bc3","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"1be9d0647b007c7e84cc9f60491de75f5acd31292a99a438b60456b152783bc3","first_computed_at":"2026-05-17T23:59:04.433120Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:59:04.433120Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"9qJQNSjxwAHAo9PO5S5WswToxtuirYiIOFOz1FNgNkrC3Cnd2jg0PKCGwNHwgTLLfoay/enQZXr8jZFo4MwQBQ==","signature_status":"signed_v1","signed_at":"2026-05-17T23:59:04.433625Z","signed_message":"canonical_sha256_bytes"},"source_id":"1810.09465","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d28a04f66f355aae7e6ddd5545057450677708953074306500a9c0d74f6bb8f3","sha256:5ab7c6577cd93fdfb12c39269f6edc81a25d14de1b0870b50626c8329ec29a1d"],"state_sha256":"3cd42a8c68ee6c9b8cb3faf24bf89b7f458dfb44057689dd0293e4a12bedde35"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"U5D9hIqeVdloEwDyym+0RiQfGCtyX1zqmDQ/ZvH6j3bplRE0j6UXZXyWp5bIr4K9zufrA9J+EdBzFMXLA4M6Cg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-09T10:21:16.426881Z","bundle_sha256":"c45b25f243a8efb45e26276889e0f204b1a371a90772edeaee4844490d31b817"}}