{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2007:6HUO76VNKE5OSQXQCYZCVPSG4K","short_pith_number":"pith:6HUO76VN","canonical_record":{"source":{"id":"0706.1083","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2007-06-07T20:57:30Z","cross_cats_sorted":[],"title_canon_sha256":"6bd941d16020086f6bb3d4e6b0ef1dae70ac0ddfd6ed1435db30d70e5c940355","abstract_canon_sha256":"071a34828cb169a7f28a564dc6f89c79d2f7c986d0188aa7a362f03dd97df9e1"},"schema_version":"1.0"},"canonical_sha256":"f1e8effaad513ae942f016322abe46e29aecdc7d4da40f97118366e7631df4aa","source":{"kind":"arxiv","id":"0706.1083","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0706.1083","created_at":"2026-05-18T04:29:33Z"},{"alias_kind":"arxiv_version","alias_value":"0706.1083v1","created_at":"2026-05-18T04:29:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0706.1083","created_at":"2026-05-18T04:29:33Z"},{"alias_kind":"pith_short_12","alias_value":"6HUO76VNKE5O","created_at":"2026-05-18T12:25:55Z"},{"alias_kind":"pith_short_16","alias_value":"6HUO76VNKE5OSQXQ","created_at":"2026-05-18T12:25:55Z"},{"alias_kind":"pith_short_8","alias_value":"6HUO76VN","created_at":"2026-05-18T12:25:55Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2007:6HUO76VNKE5OSQXQCYZCVPSG4K","target":"record","payload":{"canonical_record":{"source":{"id":"0706.1083","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2007-06-07T20:57:30Z","cross_cats_sorted":[],"title_canon_sha256":"6bd941d16020086f6bb3d4e6b0ef1dae70ac0ddfd6ed1435db30d70e5c940355","abstract_canon_sha256":"071a34828cb169a7f28a564dc6f89c79d2f7c986d0188aa7a362f03dd97df9e1"},"schema_version":"1.0"},"canonical_sha256":"f1e8effaad513ae942f016322abe46e29aecdc7d4da40f97118366e7631df4aa","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:29:33.922338Z","signature_b64":"hXcD6ERHpQ60dVpoDk79GLCceoQ+7KwNGwHaO3zD7w3Xy3tJUS/R2dhW6b3cOsKG9XXQoGNHiQYKgtWr37d8BA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f1e8effaad513ae942f016322abe46e29aecdc7d4da40f97118366e7631df4aa","last_reissued_at":"2026-05-18T04:29:33.921822Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:29:33.921822Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0706.1083","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":"2026-05-18T04:29:33Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"z+LSrKbp03PY9T7m7stPCXhg0SPzPQA+fZM7gtlgfQGtpRUxSpXTMPrvNxMLk9/C4TC/7tN2GTul3ruSYXAzBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-10T05:14:56.465550Z"},"content_sha256":"cce0b6578385df3b0797b8d3408dddfc6918d15c77b459d8a1d0301c8fbc0b46","schema_version":"1.0","event_id":"sha256:cce0b6578385df3b0797b8d3408dddfc6918d15c77b459d8a1d0301c8fbc0b46"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2007:6HUO76VNKE5OSQXQCYZCVPSG4K","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"An X-ray Spectral Analysis of the Central Regions of NGC 4593","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"Astronomy, College Park; (2) University of Erlangen-Nuremburg; (3) Dept. of Physics, C.S. Reynolds (1), Johns Hopkins University), J. Wilms (2), L.W. Brenneman (1), M.E. Kaiser (3) ((1) Dept. of Astronomy, University of Maryland","submitted_at":"2007-06-07T20:57:30Z","abstract_excerpt":"We present a detailed analysis of XMM-Newton EPIC-pn data for the Seyfert-1 galaxy NGC 4593. We discuss the X-ray spectral properties of this source as well as its variations with time. The 0.5-10 keV spectrum shows significant complexity beyond a simple power-law form, with clear evidence existing for a \"soft excess\" as well as absorption by highly ionized plasma (a warm absorber) within the central engine of this active galactic nucleus. We show that the soft excess is best described as originating from thermal Comptonization by plasma that is appreciably cooler than the primary X-ray emitti"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0706.1083","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":"2026-05-18T04:29:33Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Y5fCkWVqEEZx4IR0nYxHK0E4MxelToxtrycY/xhaiGZJCwNDLr42Di8AbaHSoubKJH7vqmJ9ev88tLKRWtYuDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-10T05:14:56.465937Z"},"content_sha256":"5d4e5559aef2d85f24bd9417099d0466a8a7df7d68a76e3a40fc0548b7e31fff","schema_version":"1.0","event_id":"sha256:5d4e5559aef2d85f24bd9417099d0466a8a7df7d68a76e3a40fc0548b7e31fff"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/6HUO76VNKE5OSQXQCYZCVPSG4K/bundle.json","state_url":"https://pith.science/pith/6HUO76VNKE5OSQXQCYZCVPSG4K/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/6HUO76VNKE5OSQXQCYZCVPSG4K/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":"2026-06-10T05:14:56Z","links":{"resolver":"https://pith.science/pith/6HUO76VNKE5OSQXQCYZCVPSG4K","bundle":"https://pith.science/pith/6HUO76VNKE5OSQXQCYZCVPSG4K/bundle.json","state":"https://pith.science/pith/6HUO76VNKE5OSQXQCYZCVPSG4K/state.json","well_known_bundle":"https://pith.science/.well-known/pith/6HUO76VNKE5OSQXQCYZCVPSG4K/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2007:6HUO76VNKE5OSQXQCYZCVPSG4K","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":"071a34828cb169a7f28a564dc6f89c79d2f7c986d0188aa7a362f03dd97df9e1","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2007-06-07T20:57:30Z","title_canon_sha256":"6bd941d16020086f6bb3d4e6b0ef1dae70ac0ddfd6ed1435db30d70e5c940355"},"schema_version":"1.0","source":{"id":"0706.1083","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0706.1083","created_at":"2026-05-18T04:29:33Z"},{"alias_kind":"arxiv_version","alias_value":"0706.1083v1","created_at":"2026-05-18T04:29:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0706.1083","created_at":"2026-05-18T04:29:33Z"},{"alias_kind":"pith_short_12","alias_value":"6HUO76VNKE5O","created_at":"2026-05-18T12:25:55Z"},{"alias_kind":"pith_short_16","alias_value":"6HUO76VNKE5OSQXQ","created_at":"2026-05-18T12:25:55Z"},{"alias_kind":"pith_short_8","alias_value":"6HUO76VN","created_at":"2026-05-18T12:25:55Z"}],"graph_snapshots":[{"event_id":"sha256:5d4e5559aef2d85f24bd9417099d0466a8a7df7d68a76e3a40fc0548b7e31fff","target":"graph","created_at":"2026-05-18T04:29:33Z","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 a detailed analysis of XMM-Newton EPIC-pn data for the Seyfert-1 galaxy NGC 4593. We discuss the X-ray spectral properties of this source as well as its variations with time. The 0.5-10 keV spectrum shows significant complexity beyond a simple power-law form, with clear evidence existing for a \"soft excess\" as well as absorption by highly ionized plasma (a warm absorber) within the central engine of this active galactic nucleus. We show that the soft excess is best described as originating from thermal Comptonization by plasma that is appreciably cooler than the primary X-ray emitti","authors_text":"Astronomy, College Park; (2) University of Erlangen-Nuremburg; (3) Dept. of Physics, C.S. Reynolds (1), Johns Hopkins University), J. Wilms (2), L.W. Brenneman (1), M.E. Kaiser (3) ((1) Dept. of Astronomy, University of Maryland","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2007-06-07T20:57:30Z","title":"An X-ray Spectral Analysis of the Central Regions of NGC 4593"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0706.1083","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:cce0b6578385df3b0797b8d3408dddfc6918d15c77b459d8a1d0301c8fbc0b46","target":"record","created_at":"2026-05-18T04:29:33Z","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":"071a34828cb169a7f28a564dc6f89c79d2f7c986d0188aa7a362f03dd97df9e1","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2007-06-07T20:57:30Z","title_canon_sha256":"6bd941d16020086f6bb3d4e6b0ef1dae70ac0ddfd6ed1435db30d70e5c940355"},"schema_version":"1.0","source":{"id":"0706.1083","kind":"arxiv","version":1}},"canonical_sha256":"f1e8effaad513ae942f016322abe46e29aecdc7d4da40f97118366e7631df4aa","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f1e8effaad513ae942f016322abe46e29aecdc7d4da40f97118366e7631df4aa","first_computed_at":"2026-05-18T04:29:33.921822Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:29:33.921822Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"hXcD6ERHpQ60dVpoDk79GLCceoQ+7KwNGwHaO3zD7w3Xy3tJUS/R2dhW6b3cOsKG9XXQoGNHiQYKgtWr37d8BA==","signature_status":"signed_v1","signed_at":"2026-05-18T04:29:33.922338Z","signed_message":"canonical_sha256_bytes"},"source_id":"0706.1083","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:cce0b6578385df3b0797b8d3408dddfc6918d15c77b459d8a1d0301c8fbc0b46","sha256:5d4e5559aef2d85f24bd9417099d0466a8a7df7d68a76e3a40fc0548b7e31fff"],"state_sha256":"cfda10488eb27dca2e6c72664b4d540d5ef277b5f64ddb24b2723a23735a18f9"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"kAiPPphkeDIfubhsdUOzAyaKWZx5k91DIA2Xdg0TF6p+AoQS0vVJwTl3qpRv5b6TE6MYA1KyTRmPvG5Os5V2Bg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-10T05:14:56.469782Z","bundle_sha256":"6d96ffa184f9b7446741bb831f711375734efae6db5b4e938a9c7ebdf972bb4a"}}