{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:XT3RUJFEOP32LVTX7AKOYTEU2Y","short_pith_number":"pith:XT3RUJFE","canonical_record":{"source":{"id":"1901.00972","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2019-01-04T03:01:08Z","cross_cats_sorted":[],"title_canon_sha256":"d424253fde2db9ad5e8fd455b732c476f94db0428ada3910d9e446ac0337f460","abstract_canon_sha256":"fae748b79855c565edb84aa3be9f6dcceb0652ed3ac86ca317e87ac3a5a0d9eb"},"schema_version":"1.0"},"canonical_sha256":"bcf71a24a473f7a5d677f814ec4c94d612d528907067c829ce3f401677c5dede","source":{"kind":"arxiv","id":"1901.00972","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1901.00972","created_at":"2026-05-17T23:56:57Z"},{"alias_kind":"arxiv_version","alias_value":"1901.00972v1","created_at":"2026-05-17T23:56:57Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1901.00972","created_at":"2026-05-17T23:56:57Z"},{"alias_kind":"pith_short_12","alias_value":"XT3RUJFEOP32","created_at":"2026-05-18T12:33:33Z"},{"alias_kind":"pith_short_16","alias_value":"XT3RUJFEOP32LVTX","created_at":"2026-05-18T12:33:33Z"},{"alias_kind":"pith_short_8","alias_value":"XT3RUJFE","created_at":"2026-05-18T12:33:33Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:XT3RUJFEOP32LVTX7AKOYTEU2Y","target":"record","payload":{"canonical_record":{"source":{"id":"1901.00972","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2019-01-04T03:01:08Z","cross_cats_sorted":[],"title_canon_sha256":"d424253fde2db9ad5e8fd455b732c476f94db0428ada3910d9e446ac0337f460","abstract_canon_sha256":"fae748b79855c565edb84aa3be9f6dcceb0652ed3ac86ca317e87ac3a5a0d9eb"},"schema_version":"1.0"},"canonical_sha256":"bcf71a24a473f7a5d677f814ec4c94d612d528907067c829ce3f401677c5dede","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:56:57.539049Z","signature_b64":"r7BxMJatz334uKlDEuWXqvTp2jvAUst6UhWgqbkFPnJx1A2yYWcq2lJK6Pd1XyqiRIN0ork1HZxMzbECH+c6Dw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"bcf71a24a473f7a5d677f814ec4c94d612d528907067c829ce3f401677c5dede","last_reissued_at":"2026-05-17T23:56:57.538444Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:56:57.538444Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1901.00972","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":"2026-05-17T23:56:57Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"IyLAwNdfPdF5Wt5DgsLOlP24q/VS5VlWsf1pY+wOgKAhrMEiFaw+5DFSwzNUGyiJOF5PM0K6vJ5UUfYSdR3NDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T00:31:48.187493Z"},"content_sha256":"eadaf75e7c9f6370ed79fdf3bea44678f866aa4c605ddad5ababd6aaca4da0ac","schema_version":"1.0","event_id":"sha256:eadaf75e7c9f6370ed79fdf3bea44678f866aa4c605ddad5ababd6aaca4da0ac"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:XT3RUJFEOP32LVTX7AKOYTEU2Y","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Quenching black hole accretion by active galactic nuclei feedback","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"De-Fu Bu, Xiao-Hong Yang","submitted_at":"2019-01-04T03:01:08Z","abstract_excerpt":"Observations of many dim galactic nuclei in local universe give good estimation of gas density and temperature at Bondi radius. If we assume the black hole accretes at Bondi accretion rate and radiates at efficiency of low-luminosity hot accretion flow, the predicted nuclei luminosity can be significantly higher than observations. Therefore, the real black hole mass accretion rate in these sources may be significantly smaller than the Bondi value. Active galactic nuclei (AGN) feedback may be responsible for decreasing black hole accretion rate to values much smaller than Bondi rate. We perform"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1901.00972","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":"2026-05-17T23:56:57Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"lmlV7WcvC18munwqJaEij1sx+XNiFTFh+algIuyCneHddQGXHE9qjy1nDw/rJcHwT4P+ouWNZGyBD6nomTtMDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T00:31:48.188607Z"},"content_sha256":"a89a5f866fcad9ddbf35f38c615234b592bc0446908adb59a121d0fb470bd763","schema_version":"1.0","event_id":"sha256:a89a5f866fcad9ddbf35f38c615234b592bc0446908adb59a121d0fb470bd763"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/XT3RUJFEOP32LVTX7AKOYTEU2Y/bundle.json","state_url":"https://pith.science/pith/XT3RUJFEOP32LVTX7AKOYTEU2Y/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/XT3RUJFEOP32LVTX7AKOYTEU2Y/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":"2026-05-30T00:31:48Z","links":{"resolver":"https://pith.science/pith/XT3RUJFEOP32LVTX7AKOYTEU2Y","bundle":"https://pith.science/pith/XT3RUJFEOP32LVTX7AKOYTEU2Y/bundle.json","state":"https://pith.science/pith/XT3RUJFEOP32LVTX7AKOYTEU2Y/state.json","well_known_bundle":"https://pith.science/.well-known/pith/XT3RUJFEOP32LVTX7AKOYTEU2Y/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:XT3RUJFEOP32LVTX7AKOYTEU2Y","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":"fae748b79855c565edb84aa3be9f6dcceb0652ed3ac86ca317e87ac3a5a0d9eb","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2019-01-04T03:01:08Z","title_canon_sha256":"d424253fde2db9ad5e8fd455b732c476f94db0428ada3910d9e446ac0337f460"},"schema_version":"1.0","source":{"id":"1901.00972","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1901.00972","created_at":"2026-05-17T23:56:57Z"},{"alias_kind":"arxiv_version","alias_value":"1901.00972v1","created_at":"2026-05-17T23:56:57Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1901.00972","created_at":"2026-05-17T23:56:57Z"},{"alias_kind":"pith_short_12","alias_value":"XT3RUJFEOP32","created_at":"2026-05-18T12:33:33Z"},{"alias_kind":"pith_short_16","alias_value":"XT3RUJFEOP32LVTX","created_at":"2026-05-18T12:33:33Z"},{"alias_kind":"pith_short_8","alias_value":"XT3RUJFE","created_at":"2026-05-18T12:33:33Z"}],"graph_snapshots":[{"event_id":"sha256:a89a5f866fcad9ddbf35f38c615234b592bc0446908adb59a121d0fb470bd763","target":"graph","created_at":"2026-05-17T23:56:57Z","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":"Observations of many dim galactic nuclei in local universe give good estimation of gas density and temperature at Bondi radius. If we assume the black hole accretes at Bondi accretion rate and radiates at efficiency of low-luminosity hot accretion flow, the predicted nuclei luminosity can be significantly higher than observations. Therefore, the real black hole mass accretion rate in these sources may be significantly smaller than the Bondi value. Active galactic nuclei (AGN) feedback may be responsible for decreasing black hole accretion rate to values much smaller than Bondi rate. We perform","authors_text":"De-Fu Bu, Xiao-Hong Yang","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2019-01-04T03:01:08Z","title":"Quenching black hole accretion by active galactic nuclei feedback"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1901.00972","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:eadaf75e7c9f6370ed79fdf3bea44678f866aa4c605ddad5ababd6aaca4da0ac","target":"record","created_at":"2026-05-17T23:56:57Z","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":"fae748b79855c565edb84aa3be9f6dcceb0652ed3ac86ca317e87ac3a5a0d9eb","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2019-01-04T03:01:08Z","title_canon_sha256":"d424253fde2db9ad5e8fd455b732c476f94db0428ada3910d9e446ac0337f460"},"schema_version":"1.0","source":{"id":"1901.00972","kind":"arxiv","version":1}},"canonical_sha256":"bcf71a24a473f7a5d677f814ec4c94d612d528907067c829ce3f401677c5dede","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"bcf71a24a473f7a5d677f814ec4c94d612d528907067c829ce3f401677c5dede","first_computed_at":"2026-05-17T23:56:57.538444Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:56:57.538444Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"r7BxMJatz334uKlDEuWXqvTp2jvAUst6UhWgqbkFPnJx1A2yYWcq2lJK6Pd1XyqiRIN0ork1HZxMzbECH+c6Dw==","signature_status":"signed_v1","signed_at":"2026-05-17T23:56:57.539049Z","signed_message":"canonical_sha256_bytes"},"source_id":"1901.00972","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:eadaf75e7c9f6370ed79fdf3bea44678f866aa4c605ddad5ababd6aaca4da0ac","sha256:a89a5f866fcad9ddbf35f38c615234b592bc0446908adb59a121d0fb470bd763"],"state_sha256":"874f45dfab8fb78b1fa25e6b227d2db9b8bc46798be89d361d1c92e5eb59d425"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ieDezms/6r5ICGSIgvwFwdlDo9YKm8mHLjbifw1G4ldjcUskthLbBIJ6cp635mZBK4hDebfP4S7uWxVblru8Cw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-30T00:31:48.192181Z","bundle_sha256":"b39a024afb151cd334b46881becd26085041549dab774b117e4f075a081551a0"}}