{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:BLYNKSS7DONQD3IPER6VW5QCRG","short_pith_number":"pith:BLYNKSS7","canonical_record":{"source":{"id":"1310.2039","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-10-08T08:32:02Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"9e1573a27f17201dfa5ad61e9a5066c9e7c216fc6ed3493690b1561afe9cb520","abstract_canon_sha256":"41b65b6d4df25274b843c2a93c2e811e0a43e0e236c618ea4201f0089e5c6f0c"},"schema_version":"1.0"},"canonical_sha256":"0af0d54a5f1b9b01ed0f247d5b7602898fe5a89cffb92444469beae7fe304336","source":{"kind":"arxiv","id":"1310.2039","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1310.2039","created_at":"2026-05-18T01:47:13Z"},{"alias_kind":"arxiv_version","alias_value":"1310.2039v1","created_at":"2026-05-18T01:47:13Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1310.2039","created_at":"2026-05-18T01:47:13Z"},{"alias_kind":"pith_short_12","alias_value":"BLYNKSS7DONQ","created_at":"2026-05-18T12:27:40Z"},{"alias_kind":"pith_short_16","alias_value":"BLYNKSS7DONQD3IP","created_at":"2026-05-18T12:27:40Z"},{"alias_kind":"pith_short_8","alias_value":"BLYNKSS7","created_at":"2026-05-18T12:27:40Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:BLYNKSS7DONQD3IPER6VW5QCRG","target":"record","payload":{"canonical_record":{"source":{"id":"1310.2039","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-10-08T08:32:02Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"9e1573a27f17201dfa5ad61e9a5066c9e7c216fc6ed3493690b1561afe9cb520","abstract_canon_sha256":"41b65b6d4df25274b843c2a93c2e811e0a43e0e236c618ea4201f0089e5c6f0c"},"schema_version":"1.0"},"canonical_sha256":"0af0d54a5f1b9b01ed0f247d5b7602898fe5a89cffb92444469beae7fe304336","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:47:13.948987Z","signature_b64":"a0xfsFrQ1NbZ/OGWN2JtwkpFfdaEYHmjeaKBWj4HS+NLQgov8nidK/SK1lubGXZlWyDoJMh56TkMwO/1cF95DQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"0af0d54a5f1b9b01ed0f247d5b7602898fe5a89cffb92444469beae7fe304336","last_reissued_at":"2026-05-18T01:47:13.948167Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:47:13.948167Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1310.2039","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":"2026-05-18T01:47:13Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"uMSAjaB67l/tlXwWl/0Sn9EaY72qEYV2TiBJL9VhdQQs6c/rs5USTkRvYnQixefrNy4uC2nPTjHmXiedpiMwDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T18:56:37.302716Z"},"content_sha256":"218e094ce2bfdbf94a7d911e9dbb3a3f1110edf1772fefbe421b5777df0ca61a","schema_version":"1.0","event_id":"sha256:218e094ce2bfdbf94a7d911e9dbb3a3f1110edf1772fefbe421b5777df0ca61a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:BLYNKSS7DONQD3IPER6VW5QCRG","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Black hole foraging: feedback drives feeding","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.CO","authors_text":"Andrew King, Walter Dehnen","submitted_at":"2013-10-08T08:32:02Z","abstract_excerpt":"We suggest a new picture of supermassive black hole (SMBH) growth in galaxy centers. Momentum-driven feedback from an accreting hole gives significant orbital energy but little angular momentum to the surrounding gas. Once central accretion drops, the feedback weakens and swept-up gas falls back towards the SMBH on near-parabolic orbits. These intersect near the black hole with partially opposed specific angular momenta, causing further infall and ultimately the formation of a small-scale accretion disk. The feeding rates into the disk typically exceed Eddington by factors of a few, growing th"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1310.2039","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":"2026-05-18T01:47:13Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"PhrL/SLs5sxrtBrJcdr32k9aTx0i3ibIigA8MGT1wz2XUdS7Jh7gJZUyZ1NtnD4xg/FxngVt1Gk6iiT3SzC5Dg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T18:56:37.303424Z"},"content_sha256":"63209bc1b08f9d1a50494579b6a7f6485698b40f905781bb4fe5e1a50730d60d","schema_version":"1.0","event_id":"sha256:63209bc1b08f9d1a50494579b6a7f6485698b40f905781bb4fe5e1a50730d60d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/BLYNKSS7DONQD3IPER6VW5QCRG/bundle.json","state_url":"https://pith.science/pith/BLYNKSS7DONQD3IPER6VW5QCRG/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/BLYNKSS7DONQD3IPER6VW5QCRG/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":"2026-05-27T18:56:37Z","links":{"resolver":"https://pith.science/pith/BLYNKSS7DONQD3IPER6VW5QCRG","bundle":"https://pith.science/pith/BLYNKSS7DONQD3IPER6VW5QCRG/bundle.json","state":"https://pith.science/pith/BLYNKSS7DONQD3IPER6VW5QCRG/state.json","well_known_bundle":"https://pith.science/.well-known/pith/BLYNKSS7DONQD3IPER6VW5QCRG/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:BLYNKSS7DONQD3IPER6VW5QCRG","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":"41b65b6d4df25274b843c2a93c2e811e0a43e0e236c618ea4201f0089e5c6f0c","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-10-08T08:32:02Z","title_canon_sha256":"9e1573a27f17201dfa5ad61e9a5066c9e7c216fc6ed3493690b1561afe9cb520"},"schema_version":"1.0","source":{"id":"1310.2039","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1310.2039","created_at":"2026-05-18T01:47:13Z"},{"alias_kind":"arxiv_version","alias_value":"1310.2039v1","created_at":"2026-05-18T01:47:13Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1310.2039","created_at":"2026-05-18T01:47:13Z"},{"alias_kind":"pith_short_12","alias_value":"BLYNKSS7DONQ","created_at":"2026-05-18T12:27:40Z"},{"alias_kind":"pith_short_16","alias_value":"BLYNKSS7DONQD3IP","created_at":"2026-05-18T12:27:40Z"},{"alias_kind":"pith_short_8","alias_value":"BLYNKSS7","created_at":"2026-05-18T12:27:40Z"}],"graph_snapshots":[{"event_id":"sha256:63209bc1b08f9d1a50494579b6a7f6485698b40f905781bb4fe5e1a50730d60d","target":"graph","created_at":"2026-05-18T01:47:13Z","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 suggest a new picture of supermassive black hole (SMBH) growth in galaxy centers. Momentum-driven feedback from an accreting hole gives significant orbital energy but little angular momentum to the surrounding gas. Once central accretion drops, the feedback weakens and swept-up gas falls back towards the SMBH on near-parabolic orbits. These intersect near the black hole with partially opposed specific angular momenta, causing further infall and ultimately the formation of a small-scale accretion disk. The feeding rates into the disk typically exceed Eddington by factors of a few, growing th","authors_text":"Andrew King, Walter Dehnen","cross_cats":["astro-ph.GA"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-10-08T08:32:02Z","title":"Black hole foraging: feedback drives feeding"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1310.2039","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":"sha256:218e094ce2bfdbf94a7d911e9dbb3a3f1110edf1772fefbe421b5777df0ca61a","target":"record","created_at":"2026-05-18T01:47:13Z","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":"41b65b6d4df25274b843c2a93c2e811e0a43e0e236c618ea4201f0089e5c6f0c","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-10-08T08:32:02Z","title_canon_sha256":"9e1573a27f17201dfa5ad61e9a5066c9e7c216fc6ed3493690b1561afe9cb520"},"schema_version":"1.0","source":{"id":"1310.2039","kind":"arxiv","version":1}},"canonical_sha256":"0af0d54a5f1b9b01ed0f247d5b7602898fe5a89cffb92444469beae7fe304336","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"0af0d54a5f1b9b01ed0f247d5b7602898fe5a89cffb92444469beae7fe304336","first_computed_at":"2026-05-18T01:47:13.948167Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:47:13.948167Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"a0xfsFrQ1NbZ/OGWN2JtwkpFfdaEYHmjeaKBWj4HS+NLQgov8nidK/SK1lubGXZlWyDoJMh56TkMwO/1cF95DQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:47:13.948987Z","signed_message":"canonical_sha256_bytes"},"source_id":"1310.2039","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:218e094ce2bfdbf94a7d911e9dbb3a3f1110edf1772fefbe421b5777df0ca61a","sha256:63209bc1b08f9d1a50494579b6a7f6485698b40f905781bb4fe5e1a50730d60d"],"state_sha256":"4a940d598c20853b0c3fa613192ce82d9526272b8985493ca738cbe24c67f52e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Sr2iWLQcjueANoltBirv3SytvK4SAugvmEZd9nt9gRlkc2MTS8fMvFUQ1boWBWPNJwdtARh3ifetJNbiRIVIAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T18:56:37.307207Z","bundle_sha256":"b63036e79f7d000806e70d2c6afbc2ab0ec717e988acb8413a5cd08c5fb7e719"}}