{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:GVQALHTWL4XTGMQXE33VTT35KL","short_pith_number":"pith:GVQALHTW","canonical_record":{"source":{"id":"1112.4421","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-12-19T17:49:39Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"6d6b50c4d998d25fcbb9a8cff70bc216f757ce40cf86b60f942fd40863ee2c24","abstract_canon_sha256":"a1db6d738f19114e625044e9de3eadd4cdd702499f9e44e42373e15d5b32153d"},"schema_version":"1.0"},"canonical_sha256":"3560059e765f2f33321726f759cf7d52e978d19c2d96fe97afe294b6603d283e","source":{"kind":"arxiv","id":"1112.4421","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1112.4421","created_at":"2026-05-18T01:59:05Z"},{"alias_kind":"arxiv_version","alias_value":"1112.4421v1","created_at":"2026-05-18T01:59:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1112.4421","created_at":"2026-05-18T01:59:05Z"},{"alias_kind":"pith_short_12","alias_value":"GVQALHTWL4XT","created_at":"2026-05-18T12:26:30Z"},{"alias_kind":"pith_short_16","alias_value":"GVQALHTWL4XTGMQX","created_at":"2026-05-18T12:26:30Z"},{"alias_kind":"pith_short_8","alias_value":"GVQALHTW","created_at":"2026-05-18T12:26:30Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:GVQALHTWL4XTGMQXE33VTT35KL","target":"record","payload":{"canonical_record":{"source":{"id":"1112.4421","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-12-19T17:49:39Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"6d6b50c4d998d25fcbb9a8cff70bc216f757ce40cf86b60f942fd40863ee2c24","abstract_canon_sha256":"a1db6d738f19114e625044e9de3eadd4cdd702499f9e44e42373e15d5b32153d"},"schema_version":"1.0"},"canonical_sha256":"3560059e765f2f33321726f759cf7d52e978d19c2d96fe97afe294b6603d283e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:59:05.451378Z","signature_b64":"OOsX70TDlIv8Ujb9RowCgtK+hERU9tqBH6kx8//kJXtM9vbpUMEVW9lJNw6RdPx3MmMqJFFU+wyzVnu0SwuRCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3560059e765f2f33321726f759cf7d52e978d19c2d96fe97afe294b6603d283e","last_reissued_at":"2026-05-18T01:59:05.450714Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:59:05.450714Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1112.4421","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":"2026-05-18T01:59:05Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Kmw0lnyF/gR0S4QXVypCaTi5cmkarBus+YkY7XTun0KcMHPMmi08ge2tTeR+Hd3Vf7O21MMYDGgc+WwNu1HLAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T22:16:37.351138Z"},"content_sha256":"225d37a70faa5ac0b4786f7ac94d4a37e738ed7f428cf400c4c6ece425eeb43d","schema_version":"1.0","event_id":"sha256:225d37a70faa5ac0b4786f7ac94d4a37e738ed7f428cf400c4c6ece425eeb43d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:GVQALHTWL4XTGMQXE33VTT35KL","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"On the non-evolution of the dependence of black hole masses on bolometric luminosities for QSOs","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.CO","authors_text":"C. M. Gutierrez, M. Lopez-Corredoira","submitted_at":"2011-12-19T17:49:39Z","abstract_excerpt":"There are extremely luminous quasi stellar objects (QSOs) at high redshift which are absent at low redshift. The lower luminosities at low redshifts can be understood as the external manifestation of either a lower Eddington ratio or a lower mass. To distinguish between both effects, we determine the possible dependence of masses and Eddington ratios of QSOs with a fixed luminosity as a function of redshifts; this avoids the Malmquist bias or any other selection effect. For the masses and Eddington ratios derived for a sample of QSOs in the Sloan Digital Sky Survey, we model their evolution by"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1112.4421","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":"2026-05-18T01:59:05Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"gRtox/dG5EuNIPRNBz2Kbu43TyoxyGFtXs2nX6ftnwovORSGpeErFMbk923vwZ00CEhwH51TJ3F7PXDPIWOXDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T22:16:37.351536Z"},"content_sha256":"3d13cac7c73f24d644d23c7850d22711d3a43d58dbfedfdeb4c47f3e5e52e85e","schema_version":"1.0","event_id":"sha256:3d13cac7c73f24d644d23c7850d22711d3a43d58dbfedfdeb4c47f3e5e52e85e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/GVQALHTWL4XTGMQXE33VTT35KL/bundle.json","state_url":"https://pith.science/pith/GVQALHTWL4XTGMQXE33VTT35KL/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/GVQALHTWL4XTGMQXE33VTT35KL/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":"2026-06-02T22:16:37Z","links":{"resolver":"https://pith.science/pith/GVQALHTWL4XTGMQXE33VTT35KL","bundle":"https://pith.science/pith/GVQALHTWL4XTGMQXE33VTT35KL/bundle.json","state":"https://pith.science/pith/GVQALHTWL4XTGMQXE33VTT35KL/state.json","well_known_bundle":"https://pith.science/.well-known/pith/GVQALHTWL4XTGMQXE33VTT35KL/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:GVQALHTWL4XTGMQXE33VTT35KL","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":"a1db6d738f19114e625044e9de3eadd4cdd702499f9e44e42373e15d5b32153d","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-12-19T17:49:39Z","title_canon_sha256":"6d6b50c4d998d25fcbb9a8cff70bc216f757ce40cf86b60f942fd40863ee2c24"},"schema_version":"1.0","source":{"id":"1112.4421","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1112.4421","created_at":"2026-05-18T01:59:05Z"},{"alias_kind":"arxiv_version","alias_value":"1112.4421v1","created_at":"2026-05-18T01:59:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1112.4421","created_at":"2026-05-18T01:59:05Z"},{"alias_kind":"pith_short_12","alias_value":"GVQALHTWL4XT","created_at":"2026-05-18T12:26:30Z"},{"alias_kind":"pith_short_16","alias_value":"GVQALHTWL4XTGMQX","created_at":"2026-05-18T12:26:30Z"},{"alias_kind":"pith_short_8","alias_value":"GVQALHTW","created_at":"2026-05-18T12:26:30Z"}],"graph_snapshots":[{"event_id":"sha256:3d13cac7c73f24d644d23c7850d22711d3a43d58dbfedfdeb4c47f3e5e52e85e","target":"graph","created_at":"2026-05-18T01:59:05Z","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":"There are extremely luminous quasi stellar objects (QSOs) at high redshift which are absent at low redshift. The lower luminosities at low redshifts can be understood as the external manifestation of either a lower Eddington ratio or a lower mass. To distinguish between both effects, we determine the possible dependence of masses and Eddington ratios of QSOs with a fixed luminosity as a function of redshifts; this avoids the Malmquist bias or any other selection effect. For the masses and Eddington ratios derived for a sample of QSOs in the Sloan Digital Sky Survey, we model their evolution by","authors_text":"C. M. Gutierrez, M. Lopez-Corredoira","cross_cats":["astro-ph.GA"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-12-19T17:49:39Z","title":"On the non-evolution of the dependence of black hole masses on bolometric luminosities for QSOs"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1112.4421","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":"sha256:225d37a70faa5ac0b4786f7ac94d4a37e738ed7f428cf400c4c6ece425eeb43d","target":"record","created_at":"2026-05-18T01:59:05Z","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":"a1db6d738f19114e625044e9de3eadd4cdd702499f9e44e42373e15d5b32153d","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-12-19T17:49:39Z","title_canon_sha256":"6d6b50c4d998d25fcbb9a8cff70bc216f757ce40cf86b60f942fd40863ee2c24"},"schema_version":"1.0","source":{"id":"1112.4421","kind":"arxiv","version":1}},"canonical_sha256":"3560059e765f2f33321726f759cf7d52e978d19c2d96fe97afe294b6603d283e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3560059e765f2f33321726f759cf7d52e978d19c2d96fe97afe294b6603d283e","first_computed_at":"2026-05-18T01:59:05.450714Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:59:05.450714Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"OOsX70TDlIv8Ujb9RowCgtK+hERU9tqBH6kx8//kJXtM9vbpUMEVW9lJNw6RdPx3MmMqJFFU+wyzVnu0SwuRCA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:59:05.451378Z","signed_message":"canonical_sha256_bytes"},"source_id":"1112.4421","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:225d37a70faa5ac0b4786f7ac94d4a37e738ed7f428cf400c4c6ece425eeb43d","sha256:3d13cac7c73f24d644d23c7850d22711d3a43d58dbfedfdeb4c47f3e5e52e85e"],"state_sha256":"07dc0ec6d775c2c667802dedf3bf4536e8cd3ea53862fd76d2a01722701c5241"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"yIh2GosHjpmkO3+S4zK0X+XV0ej6VZ7H4P7tMmxleD6z9otZZeTilOM/WRC14ZR4HTFZrLRjK4jIngdlR9m2BQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-02T22:16:37.353603Z","bundle_sha256":"66b02b93a80bb915986da13b13d166ae078aeb231d1918053aec149014932990"}}