{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:C2IDY5XRBXWZUDOQVJFXTMJTC3","short_pith_number":"pith:C2IDY5XR","canonical_record":{"source":{"id":"2006.13583","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2020-06-24T09:59:42Z","cross_cats_sorted":[],"title_canon_sha256":"ac62be158327f0e71bf18a8335a4df710caed7f9947c7ec24f2a63eeb9aa7cff","abstract_canon_sha256":"dddf206a626a9d0013b2a3c743d8e4a5ea1ed2b2b8b0bebb10703b2c143de13f"},"schema_version":"1.0"},"canonical_sha256":"16903c76f10ded9a0dd0aa4b79b13316c7d513579570eea5b027273820342b4f","source":{"kind":"arxiv","id":"2006.13583","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2006.13583","created_at":"2026-07-05T01:16:56Z"},{"alias_kind":"arxiv_version","alias_value":"2006.13583v1","created_at":"2026-07-05T01:16:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2006.13583","created_at":"2026-07-05T01:16:56Z"},{"alias_kind":"pith_short_12","alias_value":"C2IDY5XRBXWZ","created_at":"2026-07-05T01:16:56Z"},{"alias_kind":"pith_short_16","alias_value":"C2IDY5XRBXWZUDOQ","created_at":"2026-07-05T01:16:56Z"},{"alias_kind":"pith_short_8","alias_value":"C2IDY5XR","created_at":"2026-07-05T01:16:56Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:C2IDY5XRBXWZUDOQVJFXTMJTC3","target":"record","payload":{"canonical_record":{"source":{"id":"2006.13583","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2020-06-24T09:59:42Z","cross_cats_sorted":[],"title_canon_sha256":"ac62be158327f0e71bf18a8335a4df710caed7f9947c7ec24f2a63eeb9aa7cff","abstract_canon_sha256":"dddf206a626a9d0013b2a3c743d8e4a5ea1ed2b2b8b0bebb10703b2c143de13f"},"schema_version":"1.0"},"canonical_sha256":"16903c76f10ded9a0dd0aa4b79b13316c7d513579570eea5b027273820342b4f","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:16:56.588911Z","signature_b64":"ilC3CSE4+gXsEzb4V4TCV0v1SxVBlWRnj4s6ToX7DdE553CBsEnz6XH7joVY8d9lFKsiKbeI2nr2ys1SU3BlBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"16903c76f10ded9a0dd0aa4b79b13316c7d513579570eea5b027273820342b4f","last_reissued_at":"2026-07-05T01:16:56.588123Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:16:56.588123Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2006.13583","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":"2026-07-05T01:16:56Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"HkzK/xC4Nusk2IT+y4mvGUOoqGnggMMov9Dnb2SrF7XAaKS1JuJ5b9WhCa3af3YYiCeugWfT2k2jQtzRmq8hAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-17T15:10:29.476839Z"},"content_sha256":"28ea1a0f4e5168fa1f25993a5730f01da3dfa243d3af6e63a283179344209ed8","schema_version":"1.0","event_id":"sha256:28ea1a0f4e5168fa1f25993a5730f01da3dfa243d3af6e63a283179344209ed8"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:C2IDY5XRBXWZUDOQVJFXTMJTC3","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"$NuSTAR$ Observations of Four Nearby X-ray Faint AGN: Low Luminosity or Heavy Obscuration?","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"A. Annuar (UKM), A. Del Moro, A. Masini, C. Ricci, C.-T. J. Chen, D. Asmus, D. Farrah, D. M. Alexander, D. R. Ballantyne, D. Stern, E. Nardini, F. A. Harrison, F. E. Bauer, G. B. Lansbury, L. Lanz, L. Zappacosta, M. Balokovic, M. Brightman, M. J. Koss, P. Gandhi, P. G. Boorman, S. Marchesi, W. N. Brandt","submitted_at":"2020-06-24T09:59:42Z","abstract_excerpt":"We present $NuSTAR$ observations of four active galactic nuclei (AGN) located within 15 Mpc. These AGN, namely ESO 121-G6, NGC 660, NGC 3486 and NGC 5195, have observed X-ray luminosities of $L_{\\rm 2-10\\ keV, obs} \\lesssim$ 10$^{39}$ erg s$^{-1}$, classifying them as low luminosity AGN (LLAGN). We perform broadband X-ray spectral analysis for the AGN by combining our $NuSTAR$ data with $Chandra$ or $XMM-Newton$ observations to directly measure their column densities ($N_{\\rm H}$) and infer their intrinsic power. We complement our X-ray data with archival and new high angular resolution mid-in"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2006.13583","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2006.13583/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-05T01:16:56Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"rjbs4/HS3UjPKPduq5PVPBSlbP37V26+2p96GM6pgb47MeuSQCt5U23kHjqOiJtMYqbh/KD6ecgq/SSU1o1WBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-17T15:10:29.477211Z"},"content_sha256":"a287ff852ece114c71a666c4a73f3bb2721a44004e7887c79b01ad63cd1f306d","schema_version":"1.0","event_id":"sha256:a287ff852ece114c71a666c4a73f3bb2721a44004e7887c79b01ad63cd1f306d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/C2IDY5XRBXWZUDOQVJFXTMJTC3/bundle.json","state_url":"https://pith.science/pith/C2IDY5XRBXWZUDOQVJFXTMJTC3/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/C2IDY5XRBXWZUDOQVJFXTMJTC3/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":"2026-07-17T15:10:29Z","links":{"resolver":"https://pith.science/pith/C2IDY5XRBXWZUDOQVJFXTMJTC3","bundle":"https://pith.science/pith/C2IDY5XRBXWZUDOQVJFXTMJTC3/bundle.json","state":"https://pith.science/pith/C2IDY5XRBXWZUDOQVJFXTMJTC3/state.json","well_known_bundle":"https://pith.science/.well-known/pith/C2IDY5XRBXWZUDOQVJFXTMJTC3/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:C2IDY5XRBXWZUDOQVJFXTMJTC3","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":"dddf206a626a9d0013b2a3c743d8e4a5ea1ed2b2b8b0bebb10703b2c143de13f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2020-06-24T09:59:42Z","title_canon_sha256":"ac62be158327f0e71bf18a8335a4df710caed7f9947c7ec24f2a63eeb9aa7cff"},"schema_version":"1.0","source":{"id":"2006.13583","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2006.13583","created_at":"2026-07-05T01:16:56Z"},{"alias_kind":"arxiv_version","alias_value":"2006.13583v1","created_at":"2026-07-05T01:16:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2006.13583","created_at":"2026-07-05T01:16:56Z"},{"alias_kind":"pith_short_12","alias_value":"C2IDY5XRBXWZ","created_at":"2026-07-05T01:16:56Z"},{"alias_kind":"pith_short_16","alias_value":"C2IDY5XRBXWZUDOQ","created_at":"2026-07-05T01:16:56Z"},{"alias_kind":"pith_short_8","alias_value":"C2IDY5XR","created_at":"2026-07-05T01:16:56Z"}],"graph_snapshots":[{"event_id":"sha256:a287ff852ece114c71a666c4a73f3bb2721a44004e7887c79b01ad63cd1f306d","target":"graph","created_at":"2026-07-05T01:16:56Z","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/2006.13583/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We present $NuSTAR$ observations of four active galactic nuclei (AGN) located within 15 Mpc. These AGN, namely ESO 121-G6, NGC 660, NGC 3486 and NGC 5195, have observed X-ray luminosities of $L_{\\rm 2-10\\ keV, obs} \\lesssim$ 10$^{39}$ erg s$^{-1}$, classifying them as low luminosity AGN (LLAGN). We perform broadband X-ray spectral analysis for the AGN by combining our $NuSTAR$ data with $Chandra$ or $XMM-Newton$ observations to directly measure their column densities ($N_{\\rm H}$) and infer their intrinsic power. We complement our X-ray data with archival and new high angular resolution mid-in","authors_text":"A. Annuar (UKM), A. Del Moro, A. Masini, C. Ricci, C.-T. J. Chen, D. Asmus, D. Farrah, D. M. Alexander, D. R. Ballantyne, D. Stern, E. Nardini, F. A. Harrison, F. E. Bauer, G. B. Lansbury, L. Lanz, L. Zappacosta, M. Balokovic, M. Brightman, M. J. Koss, P. Gandhi, P. G. Boorman, S. Marchesi, W. N. Brandt","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2020-06-24T09:59:42Z","title":"$NuSTAR$ Observations of Four Nearby X-ray Faint AGN: Low Luminosity or Heavy Obscuration?"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2006.13583","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":"sha256:28ea1a0f4e5168fa1f25993a5730f01da3dfa243d3af6e63a283179344209ed8","target":"record","created_at":"2026-07-05T01:16:56Z","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":"dddf206a626a9d0013b2a3c743d8e4a5ea1ed2b2b8b0bebb10703b2c143de13f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2020-06-24T09:59:42Z","title_canon_sha256":"ac62be158327f0e71bf18a8335a4df710caed7f9947c7ec24f2a63eeb9aa7cff"},"schema_version":"1.0","source":{"id":"2006.13583","kind":"arxiv","version":1}},"canonical_sha256":"16903c76f10ded9a0dd0aa4b79b13316c7d513579570eea5b027273820342b4f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"16903c76f10ded9a0dd0aa4b79b13316c7d513579570eea5b027273820342b4f","first_computed_at":"2026-07-05T01:16:56.588123Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:16:56.588123Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ilC3CSE4+gXsEzb4V4TCV0v1SxVBlWRnj4s6ToX7DdE553CBsEnz6XH7joVY8d9lFKsiKbeI2nr2ys1SU3BlBw==","signature_status":"signed_v1","signed_at":"2026-07-05T01:16:56.588911Z","signed_message":"canonical_sha256_bytes"},"source_id":"2006.13583","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:28ea1a0f4e5168fa1f25993a5730f01da3dfa243d3af6e63a283179344209ed8","sha256:a287ff852ece114c71a666c4a73f3bb2721a44004e7887c79b01ad63cd1f306d"],"state_sha256":"0481f3d7c4ada6f659c9d93c9b42f9df896fce2ab98a5195488e4f28d4ae84b5"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Eknkk74T3ccwx7USuwIaTitKeBj31sSJlDsqV/zfHwKEK18NkxOtPNDLdvbbsaPK37ckzLp/P/CVHZOkhbCpBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-17T15:10:29.479284Z","bundle_sha256":"72ed4c313460f90d9dc88e6335232434c1b05a7824df701ebe99c6b42852ae50"}}