{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2003:SN3LWPQI6DTS7GZSZUNFUQZSZL","short_pith_number":"pith:SN3LWPQI","canonical_record":{"source":{"id":"astro-ph/0310309","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2003-10-10T22:59:17Z","cross_cats_sorted":[],"title_canon_sha256":"5b9d8562fc8326121c9d75ac5ee6bd3100961e2ff6aec889140bf2aead8fab7a","abstract_canon_sha256":"c530b85d8f922ac9759ac07c16dd5a8afb71ddba0619b72da8d094750fa1992b"},"schema_version":"1.0"},"canonical_sha256":"9376bb3e08f0e72f9b32cd1a5a4332cac281dceea36faa16f7707d147f7367c3","source":{"kind":"arxiv","id":"astro-ph/0310309","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0310309","created_at":"2026-07-04T14:13:04Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0310309v1","created_at":"2026-07-04T14:13:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0310309","created_at":"2026-07-04T14:13:04Z"},{"alias_kind":"pith_short_12","alias_value":"SN3LWPQI6DTS","created_at":"2026-07-04T14:13:04Z"},{"alias_kind":"pith_short_16","alias_value":"SN3LWPQI6DTS7GZS","created_at":"2026-07-04T14:13:04Z"},{"alias_kind":"pith_short_8","alias_value":"SN3LWPQI","created_at":"2026-07-04T14:13:04Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2003:SN3LWPQI6DTS7GZSZUNFUQZSZL","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/0310309","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2003-10-10T22:59:17Z","cross_cats_sorted":[],"title_canon_sha256":"5b9d8562fc8326121c9d75ac5ee6bd3100961e2ff6aec889140bf2aead8fab7a","abstract_canon_sha256":"c530b85d8f922ac9759ac07c16dd5a8afb71ddba0619b72da8d094750fa1992b"},"schema_version":"1.0"},"canonical_sha256":"9376bb3e08f0e72f9b32cd1a5a4332cac281dceea36faa16f7707d147f7367c3","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T14:13:04.682549Z","signature_b64":"iNYNin24FPQu45Sbt1TH4R3T2j+49oCxD3NSNHqkY/VehPzl3DRVi+Kc1SJi4cRrKssTYsgDVwcE/09FXOo8AA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9376bb3e08f0e72f9b32cd1a5a4332cac281dceea36faa16f7707d147f7367c3","last_reissued_at":"2026-07-04T14:13:04.682074Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T14:13:04.682074Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/0310309","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":"2026-07-04T14:13:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hS/29a3XjjEj5pkH41dX5f6KJHehH/O3Q9fok9ASn+7MhkSqbTwk6OhYAeSxhcuxVjPIK8E4n5cjv5ldvncjCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T10:04:19.023051Z"},"content_sha256":"d34e4af166ea3232c316513f95f5d540b0b7ebb9d2894f858a4b54af66ba69c3","schema_version":"1.0","event_id":"sha256:d34e4af166ea3232c316513f95f5d540b0b7ebb9d2894f858a4b54af66ba69c3"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2003:SN3LWPQI6DTS7GZSZUNFUQZSZL","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"X-ray Observations of Planetary Nebulae","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"M.A. Guerrero, R.A. Gruendl (University of Illinois), Y.-H. Chu","submitted_at":"2003-10-10T22:59:17Z","abstract_excerpt":"Planetary nebulae (PNe) are an exciting addition to the zoo of X-ray sources. Recent Chandra and XMM-Newton observations have detected diffuse X-ray emission from shocked fast winds in PN interiors as well as bow-shocks of fast collimated outflows impinging on the nebular envelope. Point X-ray sources associated with PN central stars are also detected, with the soft X-ray (<0.5 keV) emission originating from the photospheres of stars hotter than ~100,000 K, and the hard X-ray (>>0.5 keV) emission from instability shocks in the fast stellar wind itself or from a low-mass companion's coronal act"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0310309","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/astro-ph/0310309/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":"2026-07-04T14:13:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"s4j9BsHM241rg6awyA/Xz0cJn9I8i1pv1D1T2A8yj49mN4A8WjAl7u0oJ7wmuIdmX8Dz04l98A3Z/WHIWjORAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T10:04:19.023585Z"},"content_sha256":"6d58776bf38b3ee7221a2e09eb87223250d03a45cdde14ce16d2ac3c0942fe79","schema_version":"1.0","event_id":"sha256:6d58776bf38b3ee7221a2e09eb87223250d03a45cdde14ce16d2ac3c0942fe79"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/SN3LWPQI6DTS7GZSZUNFUQZSZL/bundle.json","state_url":"https://pith.science/pith/SN3LWPQI6DTS7GZSZUNFUQZSZL/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/SN3LWPQI6DTS7GZSZUNFUQZSZL/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":"2026-08-06T10:04:19Z","links":{"resolver":"https://pith.science/pith/SN3LWPQI6DTS7GZSZUNFUQZSZL","bundle":"https://pith.science/pith/SN3LWPQI6DTS7GZSZUNFUQZSZL/bundle.json","state":"https://pith.science/pith/SN3LWPQI6DTS7GZSZUNFUQZSZL/state.json","well_known_bundle":"https://pith.science/.well-known/pith/SN3LWPQI6DTS7GZSZUNFUQZSZL/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2003:SN3LWPQI6DTS7GZSZUNFUQZSZL","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":"c530b85d8f922ac9759ac07c16dd5a8afb71ddba0619b72da8d094750fa1992b","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2003-10-10T22:59:17Z","title_canon_sha256":"5b9d8562fc8326121c9d75ac5ee6bd3100961e2ff6aec889140bf2aead8fab7a"},"schema_version":"1.0","source":{"id":"astro-ph/0310309","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0310309","created_at":"2026-07-04T14:13:04Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0310309v1","created_at":"2026-07-04T14:13:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0310309","created_at":"2026-07-04T14:13:04Z"},{"alias_kind":"pith_short_12","alias_value":"SN3LWPQI6DTS","created_at":"2026-07-04T14:13:04Z"},{"alias_kind":"pith_short_16","alias_value":"SN3LWPQI6DTS7GZS","created_at":"2026-07-04T14:13:04Z"},{"alias_kind":"pith_short_8","alias_value":"SN3LWPQI","created_at":"2026-07-04T14:13:04Z"}],"graph_snapshots":[{"event_id":"sha256:6d58776bf38b3ee7221a2e09eb87223250d03a45cdde14ce16d2ac3c0942fe79","target":"graph","created_at":"2026-07-04T14:13:04Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/astro-ph/0310309/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Planetary nebulae (PNe) are an exciting addition to the zoo of X-ray sources. Recent Chandra and XMM-Newton observations have detected diffuse X-ray emission from shocked fast winds in PN interiors as well as bow-shocks of fast collimated outflows impinging on the nebular envelope. Point X-ray sources associated with PN central stars are also detected, with the soft X-ray (<0.5 keV) emission originating from the photospheres of stars hotter than ~100,000 K, and the hard X-ray (>>0.5 keV) emission from instability shocks in the fast stellar wind itself or from a low-mass companion's coronal act","authors_text":"M.A. Guerrero, R.A. Gruendl (University of Illinois), Y.-H. Chu","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2003-10-10T22:59:17Z","title":"X-ray Observations of Planetary Nebulae"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0310309","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:d34e4af166ea3232c316513f95f5d540b0b7ebb9d2894f858a4b54af66ba69c3","target":"record","created_at":"2026-07-04T14:13:04Z","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":"c530b85d8f922ac9759ac07c16dd5a8afb71ddba0619b72da8d094750fa1992b","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2003-10-10T22:59:17Z","title_canon_sha256":"5b9d8562fc8326121c9d75ac5ee6bd3100961e2ff6aec889140bf2aead8fab7a"},"schema_version":"1.0","source":{"id":"astro-ph/0310309","kind":"arxiv","version":1}},"canonical_sha256":"9376bb3e08f0e72f9b32cd1a5a4332cac281dceea36faa16f7707d147f7367c3","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9376bb3e08f0e72f9b32cd1a5a4332cac281dceea36faa16f7707d147f7367c3","first_computed_at":"2026-07-04T14:13:04.682074Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T14:13:04.682074Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"iNYNin24FPQu45Sbt1TH4R3T2j+49oCxD3NSNHqkY/VehPzl3DRVi+Kc1SJi4cRrKssTYsgDVwcE/09FXOo8AA==","signature_status":"signed_v1","signed_at":"2026-07-04T14:13:04.682549Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0310309","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d34e4af166ea3232c316513f95f5d540b0b7ebb9d2894f858a4b54af66ba69c3","sha256:6d58776bf38b3ee7221a2e09eb87223250d03a45cdde14ce16d2ac3c0942fe79"],"state_sha256":"6a17d75f9aea860b27dee4e25499e42e2299e8aa6f01acfd9eaafaffcdb993c0"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8Fo79ceQjjSgTjZUZpxt7OGs3OcMhGqB1llMHLtpaW8Z5K8fVJxuQPlsBdwXzOZrkTCcmiuMYbUuORtk38HBCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-06T10:04:19.027446Z","bundle_sha256":"952d2a77390c6545c0414c939ea7baac325d04218d7dc84c500e17e6b8ea2ce9"}}