{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:NEVJKYR5RDKBT7JPTBCOIN4NGL","short_pith_number":"pith:NEVJKYR5","canonical_record":{"source":{"id":"1106.4969","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-06-24T13:29:30Z","cross_cats_sorted":[],"title_canon_sha256":"d80dd5e595ce27a7258a76804215a5de54ed3ac93347b2d767e3eba342b3b6c3","abstract_canon_sha256":"9dfd5b4745de7dff4358d5000490e97f08b9eef2d72732837d2f78261b902d71"},"schema_version":"1.0"},"canonical_sha256":"692a95623d88d419fd2f9844e4378d32efe4d46c9b6292c2a55c149f2eaaea5b","source":{"kind":"arxiv","id":"1106.4969","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1106.4969","created_at":"2026-05-18T02:03:38Z"},{"alias_kind":"arxiv_version","alias_value":"1106.4969v1","created_at":"2026-05-18T02:03:38Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1106.4969","created_at":"2026-05-18T02:03:38Z"},{"alias_kind":"pith_short_12","alias_value":"NEVJKYR5RDKB","created_at":"2026-05-18T12:26:37Z"},{"alias_kind":"pith_short_16","alias_value":"NEVJKYR5RDKBT7JP","created_at":"2026-05-18T12:26:37Z"},{"alias_kind":"pith_short_8","alias_value":"NEVJKYR5","created_at":"2026-05-18T12:26:37Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:NEVJKYR5RDKBT7JPTBCOIN4NGL","target":"record","payload":{"canonical_record":{"source":{"id":"1106.4969","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-06-24T13:29:30Z","cross_cats_sorted":[],"title_canon_sha256":"d80dd5e595ce27a7258a76804215a5de54ed3ac93347b2d767e3eba342b3b6c3","abstract_canon_sha256":"9dfd5b4745de7dff4358d5000490e97f08b9eef2d72732837d2f78261b902d71"},"schema_version":"1.0"},"canonical_sha256":"692a95623d88d419fd2f9844e4378d32efe4d46c9b6292c2a55c149f2eaaea5b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:03:38.772872Z","signature_b64":"4kF27oC6G6y8sC2bMz0OjJobAvIDUnkLGzziMpSbVJtIKaXQQX8OFQ8+aICE+ZPcAzOBs6SObpXZJsPCwnscCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"692a95623d88d419fd2f9844e4378d32efe4d46c9b6292c2a55c149f2eaaea5b","last_reissued_at":"2026-05-18T02:03:38.772006Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:03:38.772006Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1106.4969","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":"2026-05-18T02:03:38Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"fYwJYeXNsmGM+ZpekMY3DzFwFgxvGR1baHLzvE9W5QjKtEgvYAP5cn165kpeZSooJX9uOBwpn2Qg34Yv1F9pCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-09T16:07:10.999114Z"},"content_sha256":"431f970a535ac9287929d9d9f4c85b87ff3088dd00c9ffda184cedb25b5405bc","schema_version":"1.0","event_id":"sha256:431f970a535ac9287929d9d9f4c85b87ff3088dd00c9ffda184cedb25b5405bc"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:NEVJKYR5RDKBT7JPTBCOIN4NGL","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Cold Accretion Disks and Lineless Quasars","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"Ari Laor, Shane W. Davis","submitted_at":"2011-06-24T13:29:30Z","abstract_excerpt":"The optical-UV continuum of quasars is broadly consistent with the emission from a geometrically thin optically thick accretion disk (AD). The AD produces the ionizing continuum which powers the broad and narrow emission lines. The maximum AD effective temperature is given by Teff=fmax(Mdot/M^2)^1/4, where M is the black hole mass, Mdot the accretion rate, and fmax is set by the black hole spin a_*. For a low enough value of Mdot/M^2 the AD may become too cold to produce ionizing photons. Such an object will form a lineless quasar. This occurs for a local blackbody (BB) AD with a luminosity Lo"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1106.4969","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":"2026-05-18T02:03:38Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"NtgBPhwF9KkU346J/i7dcaFUbg9WIRG1P+AvRJ0sRwG8l0Dj88pbde5krxN/2eRrXFO9M+njevZwyNiRUzkHAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-09T16:07:10.999484Z"},"content_sha256":"f9ec50956f7e647aa755891f89140af44e2d203e5e0b5492202d6aaa7d9531a5","schema_version":"1.0","event_id":"sha256:f9ec50956f7e647aa755891f89140af44e2d203e5e0b5492202d6aaa7d9531a5"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/NEVJKYR5RDKBT7JPTBCOIN4NGL/bundle.json","state_url":"https://pith.science/pith/NEVJKYR5RDKBT7JPTBCOIN4NGL/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/NEVJKYR5RDKBT7JPTBCOIN4NGL/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":"2026-06-09T16:07:11Z","links":{"resolver":"https://pith.science/pith/NEVJKYR5RDKBT7JPTBCOIN4NGL","bundle":"https://pith.science/pith/NEVJKYR5RDKBT7JPTBCOIN4NGL/bundle.json","state":"https://pith.science/pith/NEVJKYR5RDKBT7JPTBCOIN4NGL/state.json","well_known_bundle":"https://pith.science/.well-known/pith/NEVJKYR5RDKBT7JPTBCOIN4NGL/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:NEVJKYR5RDKBT7JPTBCOIN4NGL","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":"9dfd5b4745de7dff4358d5000490e97f08b9eef2d72732837d2f78261b902d71","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-06-24T13:29:30Z","title_canon_sha256":"d80dd5e595ce27a7258a76804215a5de54ed3ac93347b2d767e3eba342b3b6c3"},"schema_version":"1.0","source":{"id":"1106.4969","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1106.4969","created_at":"2026-05-18T02:03:38Z"},{"alias_kind":"arxiv_version","alias_value":"1106.4969v1","created_at":"2026-05-18T02:03:38Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1106.4969","created_at":"2026-05-18T02:03:38Z"},{"alias_kind":"pith_short_12","alias_value":"NEVJKYR5RDKB","created_at":"2026-05-18T12:26:37Z"},{"alias_kind":"pith_short_16","alias_value":"NEVJKYR5RDKBT7JP","created_at":"2026-05-18T12:26:37Z"},{"alias_kind":"pith_short_8","alias_value":"NEVJKYR5","created_at":"2026-05-18T12:26:37Z"}],"graph_snapshots":[{"event_id":"sha256:f9ec50956f7e647aa755891f89140af44e2d203e5e0b5492202d6aaa7d9531a5","target":"graph","created_at":"2026-05-18T02:03:38Z","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 optical-UV continuum of quasars is broadly consistent with the emission from a geometrically thin optically thick accretion disk (AD). The AD produces the ionizing continuum which powers the broad and narrow emission lines. The maximum AD effective temperature is given by Teff=fmax(Mdot/M^2)^1/4, where M is the black hole mass, Mdot the accretion rate, and fmax is set by the black hole spin a_*. For a low enough value of Mdot/M^2 the AD may become too cold to produce ionizing photons. Such an object will form a lineless quasar. This occurs for a local blackbody (BB) AD with a luminosity Lo","authors_text":"Ari Laor, Shane W. Davis","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-06-24T13:29:30Z","title":"Cold Accretion Disks and Lineless Quasars"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1106.4969","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":"sha256:431f970a535ac9287929d9d9f4c85b87ff3088dd00c9ffda184cedb25b5405bc","target":"record","created_at":"2026-05-18T02:03:38Z","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":"9dfd5b4745de7dff4358d5000490e97f08b9eef2d72732837d2f78261b902d71","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-06-24T13:29:30Z","title_canon_sha256":"d80dd5e595ce27a7258a76804215a5de54ed3ac93347b2d767e3eba342b3b6c3"},"schema_version":"1.0","source":{"id":"1106.4969","kind":"arxiv","version":1}},"canonical_sha256":"692a95623d88d419fd2f9844e4378d32efe4d46c9b6292c2a55c149f2eaaea5b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"692a95623d88d419fd2f9844e4378d32efe4d46c9b6292c2a55c149f2eaaea5b","first_computed_at":"2026-05-18T02:03:38.772006Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:03:38.772006Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"4kF27oC6G6y8sC2bMz0OjJobAvIDUnkLGzziMpSbVJtIKaXQQX8OFQ8+aICE+ZPcAzOBs6SObpXZJsPCwnscCg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:03:38.772872Z","signed_message":"canonical_sha256_bytes"},"source_id":"1106.4969","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:431f970a535ac9287929d9d9f4c85b87ff3088dd00c9ffda184cedb25b5405bc","sha256:f9ec50956f7e647aa755891f89140af44e2d203e5e0b5492202d6aaa7d9531a5"],"state_sha256":"92b9eba97848217c4458752012a9963f5b954e3c244f47849433c77bef38ac8f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"XVexwFBUsj++PJjVaOMc4TAwGUEKTIsmP/wqPKRKKMBOawjfxwYI7lZnHDgUEsPjUasYX6T4FFBhEncMprrpCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-09T16:07:11.001386Z","bundle_sha256":"7051bf1eee1114dd5960f0fa6ab11d44fe9f7062dd810e42b0297aa180484032"}}