{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:O3P53DRN7ZQ5TSRT5MJ7LYJSDP","short_pith_number":"pith:O3P53DRN","canonical_record":{"source":{"id":"1308.6010","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-08-27T23:00:35Z","cross_cats_sorted":[],"title_canon_sha256":"73cb80bf9a5ac228754f87042351cef83df64e1ec8624baed42a9f5d6881df8f","abstract_canon_sha256":"0045931c5584f18d0d50d1a8944d5ed51a8ba3fd00d87ce97918c0621aefc197"},"schema_version":"1.0"},"canonical_sha256":"76dfdd8e2dfe61d9ca33eb13f5e1321bfa5828c4ffe739aa6966047d5efcfa3e","source":{"kind":"arxiv","id":"1308.6010","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1308.6010","created_at":"2026-05-18T01:19:48Z"},{"alias_kind":"arxiv_version","alias_value":"1308.6010v1","created_at":"2026-05-18T01:19:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1308.6010","created_at":"2026-05-18T01:19:48Z"},{"alias_kind":"pith_short_12","alias_value":"O3P53DRN7ZQ5","created_at":"2026-05-18T12:27:54Z"},{"alias_kind":"pith_short_16","alias_value":"O3P53DRN7ZQ5TSRT","created_at":"2026-05-18T12:27:54Z"},{"alias_kind":"pith_short_8","alias_value":"O3P53DRN","created_at":"2026-05-18T12:27:54Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:O3P53DRN7ZQ5TSRT5MJ7LYJSDP","target":"record","payload":{"canonical_record":{"source":{"id":"1308.6010","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-08-27T23:00:35Z","cross_cats_sorted":[],"title_canon_sha256":"73cb80bf9a5ac228754f87042351cef83df64e1ec8624baed42a9f5d6881df8f","abstract_canon_sha256":"0045931c5584f18d0d50d1a8944d5ed51a8ba3fd00d87ce97918c0621aefc197"},"schema_version":"1.0"},"canonical_sha256":"76dfdd8e2dfe61d9ca33eb13f5e1321bfa5828c4ffe739aa6966047d5efcfa3e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:19:48.860264Z","signature_b64":"/U++XQs4gGnfGGlErnoVZj6GP62Egyfx8JVIuWfWw/7To7TQIZVvUjuw1nr9KyF1yFLtzG9BwPnw1RryVGdKCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"76dfdd8e2dfe61d9ca33eb13f5e1321bfa5828c4ffe739aa6966047d5efcfa3e","last_reissued_at":"2026-05-18T01:19:48.859763Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:19:48.859763Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1308.6010","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":"2026-05-18T01:19:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ItG68brxlpIM0fe/uOmMYKlvP7ajD340Jv/nhkhpJVxUJlvZ8BlhzbIslll99cpaHhoohsS+OVRDXaTdv/2/CQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T02:26:54.149024Z"},"content_sha256":"0e3696ba1cd617ea18c7d3b8702f0816ab2181618b50afba8a1f8594927e9c26","schema_version":"1.0","event_id":"sha256:0e3696ba1cd617ea18c7d3b8702f0816ab2181618b50afba8a1f8594927e9c26"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:O3P53DRN7ZQ5TSRT5MJ7LYJSDP","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Modeling quasar accretion disc temperature profiles","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"Canada), C. J. Nixon (JILA), E. S. Noordeh, E. Weiss (York University, L. S. Chajet, Patrick B. Hall, Toronto","submitted_at":"2013-08-27T23:00:35Z","abstract_excerpt":"Microlensing observations indicate that quasar accretion discs have half-light radii larger than expected from standard theoretical predictions based on quasar fluxes or black hole masses. Blackburne and colleagues have also found a very weak wavelength dependence of these half-light radii. We consider disc temperature profile models that might match these observations. Nixon and colleagues have suggested that misaligned accretion discs around spinning black holes will be disrupted at radii small enough for the Lense-Thirring torque to overcome the disc's viscous torque. Gas in precessing annu"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1308.6010","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":"2026-05-18T01:19:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"u4RejMBAVueCqKO5bpwS3Cqjt+/SdxYmUEtWnE0Cmw3jq1j6mi+JvbBZ/LwKTR6CiLJVBH8tD9ib4f1MEpl7Ag==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T02:26:54.149385Z"},"content_sha256":"231fc5aa0bf00435c771ea0d8556c7929cd02f51fc77e87670e3b73f4908c1a7","schema_version":"1.0","event_id":"sha256:231fc5aa0bf00435c771ea0d8556c7929cd02f51fc77e87670e3b73f4908c1a7"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/O3P53DRN7ZQ5TSRT5MJ7LYJSDP/bundle.json","state_url":"https://pith.science/pith/O3P53DRN7ZQ5TSRT5MJ7LYJSDP/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/O3P53DRN7ZQ5TSRT5MJ7LYJSDP/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":"2026-06-02T02:26:54Z","links":{"resolver":"https://pith.science/pith/O3P53DRN7ZQ5TSRT5MJ7LYJSDP","bundle":"https://pith.science/pith/O3P53DRN7ZQ5TSRT5MJ7LYJSDP/bundle.json","state":"https://pith.science/pith/O3P53DRN7ZQ5TSRT5MJ7LYJSDP/state.json","well_known_bundle":"https://pith.science/.well-known/pith/O3P53DRN7ZQ5TSRT5MJ7LYJSDP/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:O3P53DRN7ZQ5TSRT5MJ7LYJSDP","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":"0045931c5584f18d0d50d1a8944d5ed51a8ba3fd00d87ce97918c0621aefc197","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-08-27T23:00:35Z","title_canon_sha256":"73cb80bf9a5ac228754f87042351cef83df64e1ec8624baed42a9f5d6881df8f"},"schema_version":"1.0","source":{"id":"1308.6010","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1308.6010","created_at":"2026-05-18T01:19:48Z"},{"alias_kind":"arxiv_version","alias_value":"1308.6010v1","created_at":"2026-05-18T01:19:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1308.6010","created_at":"2026-05-18T01:19:48Z"},{"alias_kind":"pith_short_12","alias_value":"O3P53DRN7ZQ5","created_at":"2026-05-18T12:27:54Z"},{"alias_kind":"pith_short_16","alias_value":"O3P53DRN7ZQ5TSRT","created_at":"2026-05-18T12:27:54Z"},{"alias_kind":"pith_short_8","alias_value":"O3P53DRN","created_at":"2026-05-18T12:27:54Z"}],"graph_snapshots":[{"event_id":"sha256:231fc5aa0bf00435c771ea0d8556c7929cd02f51fc77e87670e3b73f4908c1a7","target":"graph","created_at":"2026-05-18T01:19:48Z","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":"Microlensing observations indicate that quasar accretion discs have half-light radii larger than expected from standard theoretical predictions based on quasar fluxes or black hole masses. Blackburne and colleagues have also found a very weak wavelength dependence of these half-light radii. We consider disc temperature profile models that might match these observations. Nixon and colleagues have suggested that misaligned accretion discs around spinning black holes will be disrupted at radii small enough for the Lense-Thirring torque to overcome the disc's viscous torque. Gas in precessing annu","authors_text":"Canada), C. J. Nixon (JILA), E. S. Noordeh, E. Weiss (York University, L. S. Chajet, Patrick B. Hall, Toronto","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-08-27T23:00:35Z","title":"Modeling quasar accretion disc temperature profiles"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1308.6010","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":"sha256:0e3696ba1cd617ea18c7d3b8702f0816ab2181618b50afba8a1f8594927e9c26","target":"record","created_at":"2026-05-18T01:19:48Z","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":"0045931c5584f18d0d50d1a8944d5ed51a8ba3fd00d87ce97918c0621aefc197","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-08-27T23:00:35Z","title_canon_sha256":"73cb80bf9a5ac228754f87042351cef83df64e1ec8624baed42a9f5d6881df8f"},"schema_version":"1.0","source":{"id":"1308.6010","kind":"arxiv","version":1}},"canonical_sha256":"76dfdd8e2dfe61d9ca33eb13f5e1321bfa5828c4ffe739aa6966047d5efcfa3e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"76dfdd8e2dfe61d9ca33eb13f5e1321bfa5828c4ffe739aa6966047d5efcfa3e","first_computed_at":"2026-05-18T01:19:48.859763Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:19:48.859763Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"/U++XQs4gGnfGGlErnoVZj6GP62Egyfx8JVIuWfWw/7To7TQIZVvUjuw1nr9KyF1yFLtzG9BwPnw1RryVGdKCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:19:48.860264Z","signed_message":"canonical_sha256_bytes"},"source_id":"1308.6010","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0e3696ba1cd617ea18c7d3b8702f0816ab2181618b50afba8a1f8594927e9c26","sha256:231fc5aa0bf00435c771ea0d8556c7929cd02f51fc77e87670e3b73f4908c1a7"],"state_sha256":"7aa94cc8be30845447ec7a89c39f40db63b58375944b3bea9133dc9f290da651"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"H+jJ4SsqneiO2nPvUgRwNSlcfhMwsAMsnHR3PtAho00NwSP01sH7XRCmNk6yPeHqxim1qOdov2D8FL4LhqE/DQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-02T02:26:54.151265Z","bundle_sha256":"6e8a250144b1f149eaa51466315bd9cd19325f715fc8fc6e203beb8efc70d340"}}