{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:EKKXC2C7RQHCD3LVWISJ5PTEI4","short_pith_number":"pith:EKKXC2C7","canonical_record":{"source":{"id":"1609.03197","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-09-11T19:16:16Z","cross_cats_sorted":[],"title_canon_sha256":"ba3fb6c0bea44e105776bd153880098f27e0eb67b4be647f9d11cdb8eaa89320","abstract_canon_sha256":"e82cc042b8dc3d30ea01c7a1f0fbc71f2315bba91f031485e2229e483b91de94"},"schema_version":"1.0"},"canonical_sha256":"229571685f8c0e21ed75b2249ebe644737f64f63de61c7fa5dfa93047d7424a3","source":{"kind":"arxiv","id":"1609.03197","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1609.03197","created_at":"2026-05-18T01:04:17Z"},{"alias_kind":"arxiv_version","alias_value":"1609.03197v1","created_at":"2026-05-18T01:04:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1609.03197","created_at":"2026-05-18T01:04:17Z"},{"alias_kind":"pith_short_12","alias_value":"EKKXC2C7RQHC","created_at":"2026-05-18T12:30:12Z"},{"alias_kind":"pith_short_16","alias_value":"EKKXC2C7RQHCD3LV","created_at":"2026-05-18T12:30:12Z"},{"alias_kind":"pith_short_8","alias_value":"EKKXC2C7","created_at":"2026-05-18T12:30:12Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:EKKXC2C7RQHCD3LVWISJ5PTEI4","target":"record","payload":{"canonical_record":{"source":{"id":"1609.03197","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-09-11T19:16:16Z","cross_cats_sorted":[],"title_canon_sha256":"ba3fb6c0bea44e105776bd153880098f27e0eb67b4be647f9d11cdb8eaa89320","abstract_canon_sha256":"e82cc042b8dc3d30ea01c7a1f0fbc71f2315bba91f031485e2229e483b91de94"},"schema_version":"1.0"},"canonical_sha256":"229571685f8c0e21ed75b2249ebe644737f64f63de61c7fa5dfa93047d7424a3","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:04:17.313246Z","signature_b64":"BN2pvYjybsNAGHD4M+UNpk4YbkQMQqQ32iLbXmrco2V16kTCvMTRU26j8vMTZNRKjF3rJsv4ph+rqpbXpuNsDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"229571685f8c0e21ed75b2249ebe644737f64f63de61c7fa5dfa93047d7424a3","last_reissued_at":"2026-05-18T01:04:17.312823Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:04:17.312823Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1609.03197","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":"2026-05-18T01:04:17Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"fory9Z5hBoXvPbHOTmn4sPyM40aOnTrOmyxmk6PZp28b83OXgjXD9JR1yEzCyTcv5mDdkMa5iirFqAYZbfupBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T21:18:05.034332Z"},"content_sha256":"9345d332c54a917be0f3598fd4b53e2df6f56db5ffac1cd2380994b9455adbed","schema_version":"1.0","event_id":"sha256:9345d332c54a917be0f3598fd4b53e2df6f56db5ffac1cd2380994b9455adbed"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:EKKXC2C7RQHCD3LVWISJ5PTEI4","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Formation and X-ray Emission from Hot Bubbles in Planetary Nebulae. II. Hot bubble X-ray emission","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"J.A. Toal\\'a, S.J. Arthur","submitted_at":"2016-09-11T19:16:16Z","abstract_excerpt":"We present a study of the X-ray emission from numerical simulations of hot bubbles in planetary nebulae (PNe). High-resolution, two-dimensional, radiation-hydrodynamical simulations of the formation and evolution of hot bubbles in PNe, with and without thermal conduction, are used to calculate the X-ray emission and study its time-dependence and relationship to the changing stellar parameters. Instabilities in the wind-wind interaction zone produce clumps and filaments in the swept-up shell of nebular material. Turbulent mixing and thermal conduction at the corrugated interface can produce qua"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1609.03197","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":"2026-05-18T01:04:17Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"eIKLF5SoLmnDPVdifKgRhXwAFCX7hxw2uEraF6tGfQ52kp4L77Hwq7Oa9pVDoFoN8U/FTHy7tG0fwQdrdxoWDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T21:18:05.035105Z"},"content_sha256":"d59757061ca998c1466f084e1bded3adbdfd56e18af1dc44164d6a42d0ce945b","schema_version":"1.0","event_id":"sha256:d59757061ca998c1466f084e1bded3adbdfd56e18af1dc44164d6a42d0ce945b"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/EKKXC2C7RQHCD3LVWISJ5PTEI4/bundle.json","state_url":"https://pith.science/pith/EKKXC2C7RQHCD3LVWISJ5PTEI4/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/EKKXC2C7RQHCD3LVWISJ5PTEI4/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":"2026-05-25T21:18:05Z","links":{"resolver":"https://pith.science/pith/EKKXC2C7RQHCD3LVWISJ5PTEI4","bundle":"https://pith.science/pith/EKKXC2C7RQHCD3LVWISJ5PTEI4/bundle.json","state":"https://pith.science/pith/EKKXC2C7RQHCD3LVWISJ5PTEI4/state.json","well_known_bundle":"https://pith.science/.well-known/pith/EKKXC2C7RQHCD3LVWISJ5PTEI4/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:EKKXC2C7RQHCD3LVWISJ5PTEI4","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":"e82cc042b8dc3d30ea01c7a1f0fbc71f2315bba91f031485e2229e483b91de94","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-09-11T19:16:16Z","title_canon_sha256":"ba3fb6c0bea44e105776bd153880098f27e0eb67b4be647f9d11cdb8eaa89320"},"schema_version":"1.0","source":{"id":"1609.03197","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1609.03197","created_at":"2026-05-18T01:04:17Z"},{"alias_kind":"arxiv_version","alias_value":"1609.03197v1","created_at":"2026-05-18T01:04:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1609.03197","created_at":"2026-05-18T01:04:17Z"},{"alias_kind":"pith_short_12","alias_value":"EKKXC2C7RQHC","created_at":"2026-05-18T12:30:12Z"},{"alias_kind":"pith_short_16","alias_value":"EKKXC2C7RQHCD3LV","created_at":"2026-05-18T12:30:12Z"},{"alias_kind":"pith_short_8","alias_value":"EKKXC2C7","created_at":"2026-05-18T12:30:12Z"}],"graph_snapshots":[{"event_id":"sha256:d59757061ca998c1466f084e1bded3adbdfd56e18af1dc44164d6a42d0ce945b","target":"graph","created_at":"2026-05-18T01:04:17Z","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 present a study of the X-ray emission from numerical simulations of hot bubbles in planetary nebulae (PNe). High-resolution, two-dimensional, radiation-hydrodynamical simulations of the formation and evolution of hot bubbles in PNe, with and without thermal conduction, are used to calculate the X-ray emission and study its time-dependence and relationship to the changing stellar parameters. Instabilities in the wind-wind interaction zone produce clumps and filaments in the swept-up shell of nebular material. Turbulent mixing and thermal conduction at the corrugated interface can produce qua","authors_text":"J.A. Toal\\'a, S.J. Arthur","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-09-11T19:16:16Z","title":"Formation and X-ray Emission from Hot Bubbles in Planetary Nebulae. II. Hot bubble X-ray emission"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1609.03197","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":"sha256:9345d332c54a917be0f3598fd4b53e2df6f56db5ffac1cd2380994b9455adbed","target":"record","created_at":"2026-05-18T01:04:17Z","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":"e82cc042b8dc3d30ea01c7a1f0fbc71f2315bba91f031485e2229e483b91de94","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-09-11T19:16:16Z","title_canon_sha256":"ba3fb6c0bea44e105776bd153880098f27e0eb67b4be647f9d11cdb8eaa89320"},"schema_version":"1.0","source":{"id":"1609.03197","kind":"arxiv","version":1}},"canonical_sha256":"229571685f8c0e21ed75b2249ebe644737f64f63de61c7fa5dfa93047d7424a3","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"229571685f8c0e21ed75b2249ebe644737f64f63de61c7fa5dfa93047d7424a3","first_computed_at":"2026-05-18T01:04:17.312823Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:04:17.312823Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"BN2pvYjybsNAGHD4M+UNpk4YbkQMQqQ32iLbXmrco2V16kTCvMTRU26j8vMTZNRKjF3rJsv4ph+rqpbXpuNsDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:04:17.313246Z","signed_message":"canonical_sha256_bytes"},"source_id":"1609.03197","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9345d332c54a917be0f3598fd4b53e2df6f56db5ffac1cd2380994b9455adbed","sha256:d59757061ca998c1466f084e1bded3adbdfd56e18af1dc44164d6a42d0ce945b"],"state_sha256":"3359f20984f5658c74d5af80707b93c17216a44158d97a9be2511bca5b71b292"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1uH4xxFYbBFJsmr4TeE89YQjmWImdL7odfDcA4iKvqwCIeakuKuZHvqAbAVUyu108lc+sltpI3xaOLGLiucbCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T21:18:05.039600Z","bundle_sha256":"e7342b1a5133ad7875bc2dc3ad4236bbb208e32d55a523769728f73dd12717b5"}}