{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2009:K6R3HLV6TEK63GHGJWHLNCE6CS","short_pith_number":"pith:K6R3HLV6","canonical_record":{"source":{"id":"0905.0252","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2009-05-03T08:29:15Z","cross_cats_sorted":["astro-ph.CO","astro-ph.GA"],"title_canon_sha256":"13aa8f9384317e99680bfbb752bb2fc94dfd9b48cd2996e84dd5573581ce43d8","abstract_canon_sha256":"34ded8e1ef7a9be5d14717d2343a04cd3d045a0edf3e11b56347fcb93488227b"},"schema_version":"1.0"},"canonical_sha256":"57a3b3aebe9915ed98e64d8eb6889e149f52258fb36636386d26207672bba6dc","source":{"kind":"arxiv","id":"0905.0252","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0905.0252","created_at":"2026-05-18T02:13:48Z"},{"alias_kind":"arxiv_version","alias_value":"0905.0252v1","created_at":"2026-05-18T02:13:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0905.0252","created_at":"2026-05-18T02:13:48Z"},{"alias_kind":"pith_short_12","alias_value":"K6R3HLV6TEK6","created_at":"2026-05-18T12:26:00Z"},{"alias_kind":"pith_short_16","alias_value":"K6R3HLV6TEK63GHG","created_at":"2026-05-18T12:26:00Z"},{"alias_kind":"pith_short_8","alias_value":"K6R3HLV6","created_at":"2026-05-18T12:26:00Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2009:K6R3HLV6TEK63GHGJWHLNCE6CS","target":"record","payload":{"canonical_record":{"source":{"id":"0905.0252","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2009-05-03T08:29:15Z","cross_cats_sorted":["astro-ph.CO","astro-ph.GA"],"title_canon_sha256":"13aa8f9384317e99680bfbb752bb2fc94dfd9b48cd2996e84dd5573581ce43d8","abstract_canon_sha256":"34ded8e1ef7a9be5d14717d2343a04cd3d045a0edf3e11b56347fcb93488227b"},"schema_version":"1.0"},"canonical_sha256":"57a3b3aebe9915ed98e64d8eb6889e149f52258fb36636386d26207672bba6dc","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:13:48.157838Z","signature_b64":"pBKQGpJRT3tvNDYtvNky/aJpUcPW/T8Z5bxN1DURr/YB0WvcOUcx6vi/zlEq27YNEmx2iLir1IJNadeR/V1ODw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"57a3b3aebe9915ed98e64d8eb6889e149f52258fb36636386d26207672bba6dc","last_reissued_at":"2026-05-18T02:13:48.157072Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:13:48.157072Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0905.0252","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":"2026-05-18T02:13:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"RoVmOz/he/tTC014gV/R1Mdb1ngh+Fdcz+88tWnjMnfJl8EZbh9jiA4NfVGAOybSCqVwbj+X1sWjQsTLQkq5DA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T23:27:07.086579Z"},"content_sha256":"9dcbb383e7bd2c42d868faa842cf823e8e8ca6d9658ee0f562e7a25229f8f749","schema_version":"1.0","event_id":"sha256:9dcbb383e7bd2c42d868faa842cf823e8e8ca6d9658ee0f562e7a25229f8f749"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2009:K6R3HLV6TEK63GHGJWHLNCE6CS","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Turbulent viscosity by convection in accretion discs - a self-consistent approach","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO","astro-ph.GA"],"primary_cat":"astro-ph.HE","authors_text":"2), 3), Christian-Albrechts-Universitaet zu Kiel, Dominikus Heinzeller (1, Germany (3) Steward Observatory, Graduate School of Science, Japan (2) Institut fuer Theoretische Physik und Astrophysik, Kyoto University, Shin Mineshige (1) ((1) Department of Astronomy, The University of Arizona, USA), Wolfgang J. Duschl (2","submitted_at":"2009-05-03T08:29:15Z","abstract_excerpt":"The source of viscosity in astrophysical accretion flows is still a hotly debated issue. We investigate the contribution of convective turbulence to the total viscosity in a self-consistent approach, where the strength of convection is determined from the vertical disc structure itself. Additional sources of viscosity are parametrized by a beta-viscosity prescription, which also allows an investigation of self-gravitating effects. In the context of accretion discs around stellar mass and intermediate mass black holes, we conclude that convection alone cannot account for the total viscosity in "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0905.0252","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":"2026-05-18T02:13:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9IEkggm6LXkbR3pDb5uvbYn7tXHw+33BZB3zHMEOjrDhENNtQu/GxsUGG6oS9rBHQ89XPDXVIa+NHnvQomNmAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T23:27:07.086965Z"},"content_sha256":"068de6f40b0df02913c60b24c603bf4285271856060414b2c1826ff02ba81018","schema_version":"1.0","event_id":"sha256:068de6f40b0df02913c60b24c603bf4285271856060414b2c1826ff02ba81018"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/K6R3HLV6TEK63GHGJWHLNCE6CS/bundle.json","state_url":"https://pith.science/pith/K6R3HLV6TEK63GHGJWHLNCE6CS/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/K6R3HLV6TEK63GHGJWHLNCE6CS/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":"2026-06-02T23:27:07Z","links":{"resolver":"https://pith.science/pith/K6R3HLV6TEK63GHGJWHLNCE6CS","bundle":"https://pith.science/pith/K6R3HLV6TEK63GHGJWHLNCE6CS/bundle.json","state":"https://pith.science/pith/K6R3HLV6TEK63GHGJWHLNCE6CS/state.json","well_known_bundle":"https://pith.science/.well-known/pith/K6R3HLV6TEK63GHGJWHLNCE6CS/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:K6R3HLV6TEK63GHGJWHLNCE6CS","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":"34ded8e1ef7a9be5d14717d2343a04cd3d045a0edf3e11b56347fcb93488227b","cross_cats_sorted":["astro-ph.CO","astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2009-05-03T08:29:15Z","title_canon_sha256":"13aa8f9384317e99680bfbb752bb2fc94dfd9b48cd2996e84dd5573581ce43d8"},"schema_version":"1.0","source":{"id":"0905.0252","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0905.0252","created_at":"2026-05-18T02:13:48Z"},{"alias_kind":"arxiv_version","alias_value":"0905.0252v1","created_at":"2026-05-18T02:13:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0905.0252","created_at":"2026-05-18T02:13:48Z"},{"alias_kind":"pith_short_12","alias_value":"K6R3HLV6TEK6","created_at":"2026-05-18T12:26:00Z"},{"alias_kind":"pith_short_16","alias_value":"K6R3HLV6TEK63GHG","created_at":"2026-05-18T12:26:00Z"},{"alias_kind":"pith_short_8","alias_value":"K6R3HLV6","created_at":"2026-05-18T12:26:00Z"}],"graph_snapshots":[{"event_id":"sha256:068de6f40b0df02913c60b24c603bf4285271856060414b2c1826ff02ba81018","target":"graph","created_at":"2026-05-18T02:13:48Z","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":"The source of viscosity in astrophysical accretion flows is still a hotly debated issue. We investigate the contribution of convective turbulence to the total viscosity in a self-consistent approach, where the strength of convection is determined from the vertical disc structure itself. Additional sources of viscosity are parametrized by a beta-viscosity prescription, which also allows an investigation of self-gravitating effects. In the context of accretion discs around stellar mass and intermediate mass black holes, we conclude that convection alone cannot account for the total viscosity in ","authors_text":"2), 3), Christian-Albrechts-Universitaet zu Kiel, Dominikus Heinzeller (1, Germany (3) Steward Observatory, Graduate School of Science, Japan (2) Institut fuer Theoretische Physik und Astrophysik, Kyoto University, Shin Mineshige (1) ((1) Department of Astronomy, The University of Arizona, USA), Wolfgang J. Duschl (2","cross_cats":["astro-ph.CO","astro-ph.GA"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2009-05-03T08:29:15Z","title":"Turbulent viscosity by convection in accretion discs - a self-consistent approach"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0905.0252","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":"sha256:9dcbb383e7bd2c42d868faa842cf823e8e8ca6d9658ee0f562e7a25229f8f749","target":"record","created_at":"2026-05-18T02:13:48Z","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":"34ded8e1ef7a9be5d14717d2343a04cd3d045a0edf3e11b56347fcb93488227b","cross_cats_sorted":["astro-ph.CO","astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2009-05-03T08:29:15Z","title_canon_sha256":"13aa8f9384317e99680bfbb752bb2fc94dfd9b48cd2996e84dd5573581ce43d8"},"schema_version":"1.0","source":{"id":"0905.0252","kind":"arxiv","version":1}},"canonical_sha256":"57a3b3aebe9915ed98e64d8eb6889e149f52258fb36636386d26207672bba6dc","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"57a3b3aebe9915ed98e64d8eb6889e149f52258fb36636386d26207672bba6dc","first_computed_at":"2026-05-18T02:13:48.157072Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:13:48.157072Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"pBKQGpJRT3tvNDYtvNky/aJpUcPW/T8Z5bxN1DURr/YB0WvcOUcx6vi/zlEq27YNEmx2iLir1IJNadeR/V1ODw==","signature_status":"signed_v1","signed_at":"2026-05-18T02:13:48.157838Z","signed_message":"canonical_sha256_bytes"},"source_id":"0905.0252","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9dcbb383e7bd2c42d868faa842cf823e8e8ca6d9658ee0f562e7a25229f8f749","sha256:068de6f40b0df02913c60b24c603bf4285271856060414b2c1826ff02ba81018"],"state_sha256":"0890ea03cfe8d655ba10dadf6044f595cda07c650ea378ea2cfbeb60fc3f712f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"YHf+lwNbMk52QZOc0vJ1BQhkP1dEx4ubywTkcZMwd9G/NeBMr484S6kD4AfMN5V6AwBaUtzvD+YR6Id/JTR3CQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-02T23:27:07.089046Z","bundle_sha256":"1942e0c28a38292f66b147b55d74bdf3386518f993f60be8862a0807b92fa17a"}}