{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:W66XT3NUQNWBRA6UGGQ6IS53P5","short_pith_number":"pith:W66XT3NU","canonical_record":{"source":{"id":"1102.1894","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2011-02-09T16:17:34Z","cross_cats_sorted":[],"title_canon_sha256":"8306ba4d29a8dfb1e9b3e6e14f9e75baaecc827590420cb48b1d42c7aeb077f7","abstract_canon_sha256":"99c26b86e44e05136fb4470824220a33e3630717e7a4442fb0e8459e7e710248"},"schema_version":"1.0"},"canonical_sha256":"b7bd79edb4836c1883d431a1e44bbb7f739af849a62d4c10d6df80157cefbcfe","source":{"kind":"arxiv","id":"1102.1894","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1102.1894","created_at":"2026-05-18T02:03:14Z"},{"alias_kind":"arxiv_version","alias_value":"1102.1894v2","created_at":"2026-05-18T02:03:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1102.1894","created_at":"2026-05-18T02:03:14Z"},{"alias_kind":"pith_short_12","alias_value":"W66XT3NUQNWB","created_at":"2026-05-18T12:26:44Z"},{"alias_kind":"pith_short_16","alias_value":"W66XT3NUQNWBRA6U","created_at":"2026-05-18T12:26:44Z"},{"alias_kind":"pith_short_8","alias_value":"W66XT3NU","created_at":"2026-05-18T12:26:44Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:W66XT3NUQNWBRA6UGGQ6IS53P5","target":"record","payload":{"canonical_record":{"source":{"id":"1102.1894","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2011-02-09T16:17:34Z","cross_cats_sorted":[],"title_canon_sha256":"8306ba4d29a8dfb1e9b3e6e14f9e75baaecc827590420cb48b1d42c7aeb077f7","abstract_canon_sha256":"99c26b86e44e05136fb4470824220a33e3630717e7a4442fb0e8459e7e710248"},"schema_version":"1.0"},"canonical_sha256":"b7bd79edb4836c1883d431a1e44bbb7f739af849a62d4c10d6df80157cefbcfe","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:03:14.841697Z","signature_b64":"3Eaw6z3OjJK3Xfx+oKqSwawRpHFGGZzCPLhe/QWTO5rbmpWWIX3ZTH/XzvpwBwNdQrvM9IHIhJiim5z4pua0Bw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b7bd79edb4836c1883d431a1e44bbb7f739af849a62d4c10d6df80157cefbcfe","last_reissued_at":"2026-05-18T02:03:14.841014Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:03:14.841014Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1102.1894","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":"2026-05-18T02:03:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1Cu1O7Pj9cOkeDhgOMGJrmDz6hfxRFXB3orVrwLoaeqETWrhw/GK59St7pXEtNr0fzXC2UZrYpuoI/FtA8RwAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T19:27:51.206339Z"},"content_sha256":"94442e8aa474711bac6648721d5dc7f96e6411b8b1c79f0e7107ff5d275dc0a4","schema_version":"1.0","event_id":"sha256:94442e8aa474711bac6648721d5dc7f96e6411b8b1c79f0e7107ff5d275dc0a4"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:W66XT3NUQNWBRA6UGGQ6IS53P5","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Contemporaneous Chandra HETG and Suzaku X-ray Observations of NGC 4051","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"A. P. Lobban, D. M. Crenshaw, J. N. Reeves, L. Miller, S. B. Kraemer, T. J. Turner, V. Braito","submitted_at":"2011-02-09T16:17:34Z","abstract_excerpt":"We present the results of a deep 300 ks Chandra HETG observation of the highly variable narrow-line Seyfert Type 1 galaxy NGC 4051. The HETG spectrum reveals 28 significant soft X-ray ionised lines in either emission or absorption; primarily originating from H-like and He-like K-shell transitions of O, Ne, Mg and Si (including higher order lines and strong forbidden emission lines from O VII and Ne IX) plus high ionisation L-shell transitions from Fe XVII to Fe XXII and lower ionisation inner-shell lines (e.g. O VI). Modelling the data with XSTAR requires four distinct ionisation zones for the"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1102.1894","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":"2026-05-18T02:03:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+tNwquScdjHC6irLfa5NBfb2QjnFuHfjI16swo5ymN9ru7tq8MeEQkv7qG3TVYP/eSsc0jlXT4DVGvIeNpRrCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T19:27:51.206733Z"},"content_sha256":"0de48c2ac24ab01ec8e0507d462fc9fc7a35538da1c94c261cd598af0f945c9f","schema_version":"1.0","event_id":"sha256:0de48c2ac24ab01ec8e0507d462fc9fc7a35538da1c94c261cd598af0f945c9f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/W66XT3NUQNWBRA6UGGQ6IS53P5/bundle.json","state_url":"https://pith.science/pith/W66XT3NUQNWBRA6UGGQ6IS53P5/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/W66XT3NUQNWBRA6UGGQ6IS53P5/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":"2026-05-30T19:27:51Z","links":{"resolver":"https://pith.science/pith/W66XT3NUQNWBRA6UGGQ6IS53P5","bundle":"https://pith.science/pith/W66XT3NUQNWBRA6UGGQ6IS53P5/bundle.json","state":"https://pith.science/pith/W66XT3NUQNWBRA6UGGQ6IS53P5/state.json","well_known_bundle":"https://pith.science/.well-known/pith/W66XT3NUQNWBRA6UGGQ6IS53P5/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:W66XT3NUQNWBRA6UGGQ6IS53P5","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":"99c26b86e44e05136fb4470824220a33e3630717e7a4442fb0e8459e7e710248","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2011-02-09T16:17:34Z","title_canon_sha256":"8306ba4d29a8dfb1e9b3e6e14f9e75baaecc827590420cb48b1d42c7aeb077f7"},"schema_version":"1.0","source":{"id":"1102.1894","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1102.1894","created_at":"2026-05-18T02:03:14Z"},{"alias_kind":"arxiv_version","alias_value":"1102.1894v2","created_at":"2026-05-18T02:03:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1102.1894","created_at":"2026-05-18T02:03:14Z"},{"alias_kind":"pith_short_12","alias_value":"W66XT3NUQNWB","created_at":"2026-05-18T12:26:44Z"},{"alias_kind":"pith_short_16","alias_value":"W66XT3NUQNWBRA6U","created_at":"2026-05-18T12:26:44Z"},{"alias_kind":"pith_short_8","alias_value":"W66XT3NU","created_at":"2026-05-18T12:26:44Z"}],"graph_snapshots":[{"event_id":"sha256:0de48c2ac24ab01ec8e0507d462fc9fc7a35538da1c94c261cd598af0f945c9f","target":"graph","created_at":"2026-05-18T02:03:14Z","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 the results of a deep 300 ks Chandra HETG observation of the highly variable narrow-line Seyfert Type 1 galaxy NGC 4051. The HETG spectrum reveals 28 significant soft X-ray ionised lines in either emission or absorption; primarily originating from H-like and He-like K-shell transitions of O, Ne, Mg and Si (including higher order lines and strong forbidden emission lines from O VII and Ne IX) plus high ionisation L-shell transitions from Fe XVII to Fe XXII and lower ionisation inner-shell lines (e.g. O VI). Modelling the data with XSTAR requires four distinct ionisation zones for the","authors_text":"A. P. Lobban, D. M. Crenshaw, J. N. Reeves, L. Miller, S. B. Kraemer, T. J. Turner, V. Braito","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2011-02-09T16:17:34Z","title":"Contemporaneous Chandra HETG and Suzaku X-ray Observations of NGC 4051"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1102.1894","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":"sha256:94442e8aa474711bac6648721d5dc7f96e6411b8b1c79f0e7107ff5d275dc0a4","target":"record","created_at":"2026-05-18T02:03:14Z","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":"99c26b86e44e05136fb4470824220a33e3630717e7a4442fb0e8459e7e710248","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2011-02-09T16:17:34Z","title_canon_sha256":"8306ba4d29a8dfb1e9b3e6e14f9e75baaecc827590420cb48b1d42c7aeb077f7"},"schema_version":"1.0","source":{"id":"1102.1894","kind":"arxiv","version":2}},"canonical_sha256":"b7bd79edb4836c1883d431a1e44bbb7f739af849a62d4c10d6df80157cefbcfe","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b7bd79edb4836c1883d431a1e44bbb7f739af849a62d4c10d6df80157cefbcfe","first_computed_at":"2026-05-18T02:03:14.841014Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:03:14.841014Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"3Eaw6z3OjJK3Xfx+oKqSwawRpHFGGZzCPLhe/QWTO5rbmpWWIX3ZTH/XzvpwBwNdQrvM9IHIhJiim5z4pua0Bw==","signature_status":"signed_v1","signed_at":"2026-05-18T02:03:14.841697Z","signed_message":"canonical_sha256_bytes"},"source_id":"1102.1894","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:94442e8aa474711bac6648721d5dc7f96e6411b8b1c79f0e7107ff5d275dc0a4","sha256:0de48c2ac24ab01ec8e0507d462fc9fc7a35538da1c94c261cd598af0f945c9f"],"state_sha256":"d48b0845479b4525f6af2c6e5db7b0160c33d170e5604e66e73e4cf931eb68a2"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"RdcnyBjyud0gm1lXDrR7PebXg5I+F1gG7RFUvxQLGNE6Fo3RsPbMJNl4gAyAIp7QiYD0OzGcdswD9bzYrgnSBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-30T19:27:51.214808Z","bundle_sha256":"1882814746db419eeae46f2605de14900096932a4887abc42345339afd808e5e"}}