{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2000:EV34NQAQ5VWE4MDATQBLWIZ3KS","short_pith_number":"pith:EV34NQAQ","canonical_record":{"source":{"id":"astro-ph/0011511","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2000-11-28T09:19:09Z","cross_cats_sorted":[],"title_canon_sha256":"9392e73e8edcf1a155bbd4658546fe7d7dc5f25e381a46065af1519804425097","abstract_canon_sha256":"b2dd5bc30b1ceed6ec5e6a6dfd683b47b92d6e9381d9e6d594920ece2bf77e34"},"schema_version":"1.0"},"canonical_sha256":"2577c6c010ed6c4e30609c02bb233b54b240a6cd29f1a4fccc3584c00ee4431b","source":{"kind":"arxiv","id":"astro-ph/0011511","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0011511","created_at":"2026-05-18T01:07:46Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0011511v1","created_at":"2026-05-18T01:07:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0011511","created_at":"2026-05-18T01:07:46Z"},{"alias_kind":"pith_short_12","alias_value":"EV34NQAQ5VWE","created_at":"2026-05-18T12:25:49Z"},{"alias_kind":"pith_short_16","alias_value":"EV34NQAQ5VWE4MDA","created_at":"2026-05-18T12:25:49Z"},{"alias_kind":"pith_short_8","alias_value":"EV34NQAQ","created_at":"2026-05-18T12:25:49Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2000:EV34NQAQ5VWE4MDATQBLWIZ3KS","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/0011511","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2000-11-28T09:19:09Z","cross_cats_sorted":[],"title_canon_sha256":"9392e73e8edcf1a155bbd4658546fe7d7dc5f25e381a46065af1519804425097","abstract_canon_sha256":"b2dd5bc30b1ceed6ec5e6a6dfd683b47b92d6e9381d9e6d594920ece2bf77e34"},"schema_version":"1.0"},"canonical_sha256":"2577c6c010ed6c4e30609c02bb233b54b240a6cd29f1a4fccc3584c00ee4431b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:07:46.245577Z","signature_b64":"TlsO7uhBdfjaRq2IpEbZGNAPeMWyfasnM51inYE1vhUVm63FGWo8aeXHH1VB8oyEXQKktrTt4Vrrz8C6h652Dw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2577c6c010ed6c4e30609c02bb233b54b240a6cd29f1a4fccc3584c00ee4431b","last_reissued_at":"2026-05-18T01:07:46.244844Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:07:46.244844Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/0011511","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":"2026-05-18T01:07:46Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"jVyRvIFvdJgyTREg6nBNCb7k9Yl32FdbZlPO1NTS4zhHgOgwvxQa5JGJ29NI8Nj+5lIkHWVZZnfWLQqYTeVYBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-24T23:15:54.601913Z"},"content_sha256":"1cf4cf23a737872bd771622e1fd954a85b6910f62f29b0b244b55c4c8585eaa3","schema_version":"1.0","event_id":"sha256:1cf4cf23a737872bd771622e1fd954a85b6910f62f29b0b244b55c4c8585eaa3"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2000:EV34NQAQ5VWE4MDATQBLWIZ3KS","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Star Formation-Regulated Growth of Black Holes in Protogalactic Spheroids","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"Andreas Burkert (MPIA, Heidelberg), Joseph Silk (Univ. of Oxford)","submitted_at":"2000-11-28T09:19:09Z","abstract_excerpt":"The observed relation between central black hole mass and spheroid velocity dispersion is interpreted in terms of a self-regulation model that incorporates a viscous Keplerian accretion disk to feed the black hole, embedded in a massive, self-gravitating star forming disk that eventually populates the spheroid. The model leads to a constant ratio between black hole mass and spheroid mass which is equal to the inverse of the critical Reynolds number for the onset of turbulence in the accretion disk surrounding the central black hole. Applying the fundamental plane correlation for spheroids, we "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0011511","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":"2026-05-18T01:07:46Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"o/CrlnUHwm1h4lPN4yz811vSTY7A+DfOJ4l4LYfhcQe2PKsdmjNvinPbZF5QD05rFa2eWVim6hPP7jMWWXavCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-24T23:15:54.602388Z"},"content_sha256":"960bbcb37cd1a0dc7a3fe055f5f7b192723ac7c15e244f3bf5b2644c9a580165","schema_version":"1.0","event_id":"sha256:960bbcb37cd1a0dc7a3fe055f5f7b192723ac7c15e244f3bf5b2644c9a580165"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/EV34NQAQ5VWE4MDATQBLWIZ3KS/bundle.json","state_url":"https://pith.science/pith/EV34NQAQ5VWE4MDATQBLWIZ3KS/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/EV34NQAQ5VWE4MDATQBLWIZ3KS/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":"2026-06-24T23:15:54Z","links":{"resolver":"https://pith.science/pith/EV34NQAQ5VWE4MDATQBLWIZ3KS","bundle":"https://pith.science/pith/EV34NQAQ5VWE4MDATQBLWIZ3KS/bundle.json","state":"https://pith.science/pith/EV34NQAQ5VWE4MDATQBLWIZ3KS/state.json","well_known_bundle":"https://pith.science/.well-known/pith/EV34NQAQ5VWE4MDATQBLWIZ3KS/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2000:EV34NQAQ5VWE4MDATQBLWIZ3KS","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":"b2dd5bc30b1ceed6ec5e6a6dfd683b47b92d6e9381d9e6d594920ece2bf77e34","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2000-11-28T09:19:09Z","title_canon_sha256":"9392e73e8edcf1a155bbd4658546fe7d7dc5f25e381a46065af1519804425097"},"schema_version":"1.0","source":{"id":"astro-ph/0011511","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0011511","created_at":"2026-05-18T01:07:46Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0011511v1","created_at":"2026-05-18T01:07:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0011511","created_at":"2026-05-18T01:07:46Z"},{"alias_kind":"pith_short_12","alias_value":"EV34NQAQ5VWE","created_at":"2026-05-18T12:25:49Z"},{"alias_kind":"pith_short_16","alias_value":"EV34NQAQ5VWE4MDA","created_at":"2026-05-18T12:25:49Z"},{"alias_kind":"pith_short_8","alias_value":"EV34NQAQ","created_at":"2026-05-18T12:25:49Z"}],"graph_snapshots":[{"event_id":"sha256:960bbcb37cd1a0dc7a3fe055f5f7b192723ac7c15e244f3bf5b2644c9a580165","target":"graph","created_at":"2026-05-18T01:07:46Z","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 observed relation between central black hole mass and spheroid velocity dispersion is interpreted in terms of a self-regulation model that incorporates a viscous Keplerian accretion disk to feed the black hole, embedded in a massive, self-gravitating star forming disk that eventually populates the spheroid. The model leads to a constant ratio between black hole mass and spheroid mass which is equal to the inverse of the critical Reynolds number for the onset of turbulence in the accretion disk surrounding the central black hole. Applying the fundamental plane correlation for spheroids, we ","authors_text":"Andreas Burkert (MPIA, Heidelberg), Joseph Silk (Univ. of Oxford)","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2000-11-28T09:19:09Z","title":"Star Formation-Regulated Growth of Black Holes in Protogalactic Spheroids"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0011511","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":"sha256:1cf4cf23a737872bd771622e1fd954a85b6910f62f29b0b244b55c4c8585eaa3","target":"record","created_at":"2026-05-18T01:07:46Z","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":"b2dd5bc30b1ceed6ec5e6a6dfd683b47b92d6e9381d9e6d594920ece2bf77e34","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2000-11-28T09:19:09Z","title_canon_sha256":"9392e73e8edcf1a155bbd4658546fe7d7dc5f25e381a46065af1519804425097"},"schema_version":"1.0","source":{"id":"astro-ph/0011511","kind":"arxiv","version":1}},"canonical_sha256":"2577c6c010ed6c4e30609c02bb233b54b240a6cd29f1a4fccc3584c00ee4431b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2577c6c010ed6c4e30609c02bb233b54b240a6cd29f1a4fccc3584c00ee4431b","first_computed_at":"2026-05-18T01:07:46.244844Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:07:46.244844Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"TlsO7uhBdfjaRq2IpEbZGNAPeMWyfasnM51inYE1vhUVm63FGWo8aeXHH1VB8oyEXQKktrTt4Vrrz8C6h652Dw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:07:46.245577Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0011511","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1cf4cf23a737872bd771622e1fd954a85b6910f62f29b0b244b55c4c8585eaa3","sha256:960bbcb37cd1a0dc7a3fe055f5f7b192723ac7c15e244f3bf5b2644c9a580165"],"state_sha256":"53cc05916ac4d108ba4cbd5fc1126898837fe3bf8ff862550889d7b3ec612cc1"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"JSOUTjQ+GjcpYZCYxFrypwr0iKkXSzMK+sCvLWdOKIWtLlpueODms/30EC1fBVT5GW+XT9wezXWQ/SlolIiZCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-24T23:15:54.604895Z","bundle_sha256":"b25bf345d365dd1552339135a2f6bc860a5067b6d87b4c959ded34c8357cdc78"}}