{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2010:U4RVC4XL52GE54VPJNOYAJEIKV","short_pith_number":"pith:U4RVC4XL","canonical_record":{"source":{"id":"1012.5359","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2010-12-24T08:03:55Z","cross_cats_sorted":[],"title_canon_sha256":"225c8880ebf4e7cb286aa9a685c650f98db2fb5e869629be57f269789499c9bd","abstract_canon_sha256":"222a16797ea8c1ee0fa0e0789eead13d5d9e3f82cc8f4f3a838da6dd4693407d"},"schema_version":"1.0"},"canonical_sha256":"a7235172ebee8c4ef2af4b5d8024885545e3f3b8d0aa937c984b2e823d112a59","source":{"kind":"arxiv","id":"1012.5359","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1012.5359","created_at":"2026-05-18T02:04:17Z"},{"alias_kind":"arxiv_version","alias_value":"1012.5359v2","created_at":"2026-05-18T02:04:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1012.5359","created_at":"2026-05-18T02:04:17Z"},{"alias_kind":"pith_short_12","alias_value":"U4RVC4XL52GE","created_at":"2026-05-18T12:26:15Z"},{"alias_kind":"pith_short_16","alias_value":"U4RVC4XL52GE54VP","created_at":"2026-05-18T12:26:15Z"},{"alias_kind":"pith_short_8","alias_value":"U4RVC4XL","created_at":"2026-05-18T12:26:15Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2010:U4RVC4XL52GE54VPJNOYAJEIKV","target":"record","payload":{"canonical_record":{"source":{"id":"1012.5359","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2010-12-24T08:03:55Z","cross_cats_sorted":[],"title_canon_sha256":"225c8880ebf4e7cb286aa9a685c650f98db2fb5e869629be57f269789499c9bd","abstract_canon_sha256":"222a16797ea8c1ee0fa0e0789eead13d5d9e3f82cc8f4f3a838da6dd4693407d"},"schema_version":"1.0"},"canonical_sha256":"a7235172ebee8c4ef2af4b5d8024885545e3f3b8d0aa937c984b2e823d112a59","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:04:17.801876Z","signature_b64":"Ewt4k4q2+x107fCA2GHVeUD0ORdRUpeJr/7OwfVHJkAGpLXjP3rLf6KCHTvpNZ27XDlsezvXxOvJPkjpPNjOBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a7235172ebee8c4ef2af4b5d8024885545e3f3b8d0aa937c984b2e823d112a59","last_reissued_at":"2026-05-18T02:04:17.801130Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:04:17.801130Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1012.5359","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T02:04:17Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"HGKVNRrvWVPqVpr0AMidDd6QWcOxzpFZqh+u4MppI8cSceCUgkarNiw1jgpWY+j/pTFxUA3hm0CMKLcF9yX9Dg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T22:29:55.866871Z"},"content_sha256":"b574896ee43fbba7874a99d56ff0cb9ff7e1609f6b7353e50c361369b6b1e91c","schema_version":"1.0","event_id":"sha256:b574896ee43fbba7874a99d56ff0cb9ff7e1609f6b7353e50c361369b6b1e91c"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2010:U4RVC4XL52GE54VPJNOYAJEIKV","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The innermost dusty structure in active galactic nuclei as probed by the Keck interferometer","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"(2) UCSB, (3) NSF, (4) ISAS, (5) SSO), Gerd Weigelt (1), Ken Levin (5) ((1) MPIfR, Konrad R.W. Tristram (1), Makoto Kishimoto (1), Richard Barvainis (3), Robert Antonucci (2), Sebastian F. Hoenig (2), Takayuki Kotani (4)","submitted_at":"2010-12-24T08:03:55Z","abstract_excerpt":"We are now exploring the inner region of Type 1 active galactic nuclei (AGNs) with the Keck interferometer in the near-infrared. Adding to the four targets previously studied, we report measurements of the K-band (2.2 um) visibilities for four more targets, namely AKN120, IC4329A, Mrk6, and the radio-loud QSO 3C273 at z=0.158. The observed visibilities are quite high for all the targets, which we interpret as an indication of the partial resolution of the dust sublimation region. The effective ring radii derived from the observed visibilities scale approximately with L^1/2, where L is the AGN "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1012.5359","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":""},"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":"2026-05-18T02:04:17Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ukl8zhCROpCX0U302JxdHVUyO2MJS4cRcxFK+D3sQmebEiyV4mmBEJeCgy2kjop6oat0MEwJ1m7vV4Dl2diqDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T22:29:55.867634Z"},"content_sha256":"ce69bb8768c58ed27fef62baec57078c8f3c72ea5b8ba6c92d91d0ac63336393","schema_version":"1.0","event_id":"sha256:ce69bb8768c58ed27fef62baec57078c8f3c72ea5b8ba6c92d91d0ac63336393"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/U4RVC4XL52GE54VPJNOYAJEIKV/bundle.json","state_url":"https://pith.science/pith/U4RVC4XL52GE54VPJNOYAJEIKV/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/U4RVC4XL52GE54VPJNOYAJEIKV/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":"2026-05-30T22:29:55Z","links":{"resolver":"https://pith.science/pith/U4RVC4XL52GE54VPJNOYAJEIKV","bundle":"https://pith.science/pith/U4RVC4XL52GE54VPJNOYAJEIKV/bundle.json","state":"https://pith.science/pith/U4RVC4XL52GE54VPJNOYAJEIKV/state.json","well_known_bundle":"https://pith.science/.well-known/pith/U4RVC4XL52GE54VPJNOYAJEIKV/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:U4RVC4XL52GE54VPJNOYAJEIKV","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":"222a16797ea8c1ee0fa0e0789eead13d5d9e3f82cc8f4f3a838da6dd4693407d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2010-12-24T08:03:55Z","title_canon_sha256":"225c8880ebf4e7cb286aa9a685c650f98db2fb5e869629be57f269789499c9bd"},"schema_version":"1.0","source":{"id":"1012.5359","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1012.5359","created_at":"2026-05-18T02:04:17Z"},{"alias_kind":"arxiv_version","alias_value":"1012.5359v2","created_at":"2026-05-18T02:04:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1012.5359","created_at":"2026-05-18T02:04:17Z"},{"alias_kind":"pith_short_12","alias_value":"U4RVC4XL52GE","created_at":"2026-05-18T12:26:15Z"},{"alias_kind":"pith_short_16","alias_value":"U4RVC4XL52GE54VP","created_at":"2026-05-18T12:26:15Z"},{"alias_kind":"pith_short_8","alias_value":"U4RVC4XL","created_at":"2026-05-18T12:26:15Z"}],"graph_snapshots":[{"event_id":"sha256:ce69bb8768c58ed27fef62baec57078c8f3c72ea5b8ba6c92d91d0ac63336393","target":"graph","created_at":"2026-05-18T02:04:17Z","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 are now exploring the inner region of Type 1 active galactic nuclei (AGNs) with the Keck interferometer in the near-infrared. Adding to the four targets previously studied, we report measurements of the K-band (2.2 um) visibilities for four more targets, namely AKN120, IC4329A, Mrk6, and the radio-loud QSO 3C273 at z=0.158. The observed visibilities are quite high for all the targets, which we interpret as an indication of the partial resolution of the dust sublimation region. The effective ring radii derived from the observed visibilities scale approximately with L^1/2, where L is the AGN ","authors_text":"(2) UCSB, (3) NSF, (4) ISAS, (5) SSO), Gerd Weigelt (1), Ken Levin (5) ((1) MPIfR, Konrad R.W. Tristram (1), Makoto Kishimoto (1), Richard Barvainis (3), Robert Antonucci (2), Sebastian F. Hoenig (2), Takayuki Kotani (4)","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2010-12-24T08:03:55Z","title":"The innermost dusty structure in active galactic nuclei as probed by the Keck interferometer"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1012.5359","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:b574896ee43fbba7874a99d56ff0cb9ff7e1609f6b7353e50c361369b6b1e91c","target":"record","created_at":"2026-05-18T02:04:17Z","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":"222a16797ea8c1ee0fa0e0789eead13d5d9e3f82cc8f4f3a838da6dd4693407d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2010-12-24T08:03:55Z","title_canon_sha256":"225c8880ebf4e7cb286aa9a685c650f98db2fb5e869629be57f269789499c9bd"},"schema_version":"1.0","source":{"id":"1012.5359","kind":"arxiv","version":2}},"canonical_sha256":"a7235172ebee8c4ef2af4b5d8024885545e3f3b8d0aa937c984b2e823d112a59","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a7235172ebee8c4ef2af4b5d8024885545e3f3b8d0aa937c984b2e823d112a59","first_computed_at":"2026-05-18T02:04:17.801130Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:04:17.801130Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Ewt4k4q2+x107fCA2GHVeUD0ORdRUpeJr/7OwfVHJkAGpLXjP3rLf6KCHTvpNZ27XDlsezvXxOvJPkjpPNjOBg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:04:17.801876Z","signed_message":"canonical_sha256_bytes"},"source_id":"1012.5359","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b574896ee43fbba7874a99d56ff0cb9ff7e1609f6b7353e50c361369b6b1e91c","sha256:ce69bb8768c58ed27fef62baec57078c8f3c72ea5b8ba6c92d91d0ac63336393"],"state_sha256":"8024e5270f71778bc10829908d040d1cfcc4e36a0806e88d134e8ae618d79435"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3sJEXa/17wEU3cxNvdhq2D45ikacJdzB6B6i0QuPBFEhBr3NpyHN+yjyTLU0vf4YvHGMhitk7E5Ef9ekcxr8CA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-30T22:29:55.872094Z","bundle_sha256":"ea8a92b59b7a9ebfca12e96e4509ee49247ea98a8267786e886bffd2d763c96b"}}