{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2009:CFYKVJU4HM3SDYBUVRWUKOY63D","short_pith_number":"pith:CFYKVJU4","canonical_record":{"source":{"id":"0904.0209","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2009-04-01T16:34:39Z","cross_cats_sorted":[],"title_canon_sha256":"09a30d26de6316836a9f9b51950b13e5d034ba7b14c8e52f2a45d208f91097f5","abstract_canon_sha256":"cea40e46a558391c77b9a91af636b0927fc978bb9b9e2d98c4ada63da32411d1"},"schema_version":"1.0"},"canonical_sha256":"1170aaa69c3b3721e034ac6d453b1ed8f3ceaaacfb7e8571c77fafe29be84e60","source":{"kind":"arxiv","id":"0904.0209","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0904.0209","created_at":"2026-05-18T02:14:08Z"},{"alias_kind":"arxiv_version","alias_value":"0904.0209v1","created_at":"2026-05-18T02:14:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0904.0209","created_at":"2026-05-18T02:14:08Z"},{"alias_kind":"pith_short_12","alias_value":"CFYKVJU4HM3S","created_at":"2026-05-18T12:25:59Z"},{"alias_kind":"pith_short_16","alias_value":"CFYKVJU4HM3SDYBU","created_at":"2026-05-18T12:25:59Z"},{"alias_kind":"pith_short_8","alias_value":"CFYKVJU4","created_at":"2026-05-18T12:25:59Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2009:CFYKVJU4HM3SDYBUVRWUKOY63D","target":"record","payload":{"canonical_record":{"source":{"id":"0904.0209","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2009-04-01T16:34:39Z","cross_cats_sorted":[],"title_canon_sha256":"09a30d26de6316836a9f9b51950b13e5d034ba7b14c8e52f2a45d208f91097f5","abstract_canon_sha256":"cea40e46a558391c77b9a91af636b0927fc978bb9b9e2d98c4ada63da32411d1"},"schema_version":"1.0"},"canonical_sha256":"1170aaa69c3b3721e034ac6d453b1ed8f3ceaaacfb7e8571c77fafe29be84e60","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:14:08.269728Z","signature_b64":"m325V+S5tBgT4C60loDVmDfh/WmRE4fVPz6JUJt5bYcvM5gZAy6d1HBineMbL4uAvOl4FS0jzqGkit6P6bRmBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"1170aaa69c3b3721e034ac6d453b1ed8f3ceaaacfb7e8571c77fafe29be84e60","last_reissued_at":"2026-05-18T02:14:08.269091Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:14:08.269091Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0904.0209","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":"2026-05-18T02:14:08Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"OGp5xiGz1AqJ3MoK+E3olTkwkiKkBc7j/1jLGry37ozsT9fPw4MsMKe5eXqNdeSiNnkU/hYMPpDoUSzX9tpLBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-24T12:57:07.784992Z"},"content_sha256":"11f74b1c5a95e2bc0619089a2ffb32a5a7d9ba404e8e16f55a2502fcf9609cb3","schema_version":"1.0","event_id":"sha256:11f74b1c5a95e2bc0619089a2ffb32a5a7d9ba404e8e16f55a2502fcf9609cb3"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2009:CFYKVJU4HM3SDYBUVRWUKOY63D","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Radio constraints on the volume filling factors of AGN winds","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"A. C. Fabian (IoA, A. J. Blustin (IoA, Cambridge)","submitted_at":"2009-04-01T16:34:39Z","abstract_excerpt":"The calculation of mass outflow rates of AGN winds is of great importance in understanding the role that such winds play in AGN-galaxy feedback processes. The mass outflow rates are, however, difficult to estimate since the volume filling factors of the winds are unknown. In this paper, we use constraints imposed by the observed radio emission to obtain upper limits to the volume filling factors of wind components in certain nearby AGN. We do this by predicting the 1.4 GHz radio flux densities emitted by those components, assuming a uniform wind, and then comparing these with the observed flux"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0904.0209","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":"2026-05-18T02:14:08Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"K+gnSreZF2dz6McaEvpg7JU22yHlQiwEazajIDVNA8wRO7PWeq5VgYkPvwO+oIZNF2+y8qo55TbmR0ZORpzJCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-24T12:57:07.785662Z"},"content_sha256":"2566ff60c09b3dcc5efc84054f7fffaee30646451fbf86ab5935834e11a55f27","schema_version":"1.0","event_id":"sha256:2566ff60c09b3dcc5efc84054f7fffaee30646451fbf86ab5935834e11a55f27"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/CFYKVJU4HM3SDYBUVRWUKOY63D/bundle.json","state_url":"https://pith.science/pith/CFYKVJU4HM3SDYBUVRWUKOY63D/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/CFYKVJU4HM3SDYBUVRWUKOY63D/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":"2026-05-24T12:57:07Z","links":{"resolver":"https://pith.science/pith/CFYKVJU4HM3SDYBUVRWUKOY63D","bundle":"https://pith.science/pith/CFYKVJU4HM3SDYBUVRWUKOY63D/bundle.json","state":"https://pith.science/pith/CFYKVJU4HM3SDYBUVRWUKOY63D/state.json","well_known_bundle":"https://pith.science/.well-known/pith/CFYKVJU4HM3SDYBUVRWUKOY63D/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:CFYKVJU4HM3SDYBUVRWUKOY63D","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":"cea40e46a558391c77b9a91af636b0927fc978bb9b9e2d98c4ada63da32411d1","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2009-04-01T16:34:39Z","title_canon_sha256":"09a30d26de6316836a9f9b51950b13e5d034ba7b14c8e52f2a45d208f91097f5"},"schema_version":"1.0","source":{"id":"0904.0209","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0904.0209","created_at":"2026-05-18T02:14:08Z"},{"alias_kind":"arxiv_version","alias_value":"0904.0209v1","created_at":"2026-05-18T02:14:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0904.0209","created_at":"2026-05-18T02:14:08Z"},{"alias_kind":"pith_short_12","alias_value":"CFYKVJU4HM3S","created_at":"2026-05-18T12:25:59Z"},{"alias_kind":"pith_short_16","alias_value":"CFYKVJU4HM3SDYBU","created_at":"2026-05-18T12:25:59Z"},{"alias_kind":"pith_short_8","alias_value":"CFYKVJU4","created_at":"2026-05-18T12:25:59Z"}],"graph_snapshots":[{"event_id":"sha256:2566ff60c09b3dcc5efc84054f7fffaee30646451fbf86ab5935834e11a55f27","target":"graph","created_at":"2026-05-18T02:14:08Z","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":"The calculation of mass outflow rates of AGN winds is of great importance in understanding the role that such winds play in AGN-galaxy feedback processes. The mass outflow rates are, however, difficult to estimate since the volume filling factors of the winds are unknown. In this paper, we use constraints imposed by the observed radio emission to obtain upper limits to the volume filling factors of wind components in certain nearby AGN. We do this by predicting the 1.4 GHz radio flux densities emitted by those components, assuming a uniform wind, and then comparing these with the observed flux","authors_text":"A. C. Fabian (IoA, A. J. Blustin (IoA, Cambridge)","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2009-04-01T16:34:39Z","title":"Radio constraints on the volume filling factors of AGN winds"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0904.0209","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":"sha256:11f74b1c5a95e2bc0619089a2ffb32a5a7d9ba404e8e16f55a2502fcf9609cb3","target":"record","created_at":"2026-05-18T02:14:08Z","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":"cea40e46a558391c77b9a91af636b0927fc978bb9b9e2d98c4ada63da32411d1","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2009-04-01T16:34:39Z","title_canon_sha256":"09a30d26de6316836a9f9b51950b13e5d034ba7b14c8e52f2a45d208f91097f5"},"schema_version":"1.0","source":{"id":"0904.0209","kind":"arxiv","version":1}},"canonical_sha256":"1170aaa69c3b3721e034ac6d453b1ed8f3ceaaacfb7e8571c77fafe29be84e60","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"1170aaa69c3b3721e034ac6d453b1ed8f3ceaaacfb7e8571c77fafe29be84e60","first_computed_at":"2026-05-18T02:14:08.269091Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:14:08.269091Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"m325V+S5tBgT4C60loDVmDfh/WmRE4fVPz6JUJt5bYcvM5gZAy6d1HBineMbL4uAvOl4FS0jzqGkit6P6bRmBg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:14:08.269728Z","signed_message":"canonical_sha256_bytes"},"source_id":"0904.0209","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:11f74b1c5a95e2bc0619089a2ffb32a5a7d9ba404e8e16f55a2502fcf9609cb3","sha256:2566ff60c09b3dcc5efc84054f7fffaee30646451fbf86ab5935834e11a55f27"],"state_sha256":"dbb0b4d0d6b0bd97d673c0d78b1c71e959bf502e9dbae3ca4d26ee176fcf2ae4"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"c0LHRG7tAK7ar2mUArKEZFyLY7fK9rjuadokTlcD0ZBGlYsoL8utIJbqijpPTUiNV9E4EvPIe1Eah7QwgaD3Bw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-24T12:57:07.788485Z","bundle_sha256":"9c4fc71857f79d5865241e1aa20f2526ec3e3d61d1f73d4ce0486b1abf23c62f"}}