{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:XQF5AVETGJ4RM66MI3I4TT3OOJ","short_pith_number":"pith:XQF5AVET","canonical_record":{"source":{"id":"2010.11120","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.flu-dyn","submitted_at":"2020-10-21T16:29:08Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"74b9bb8ecc53c26a722f1f0e67708b4c548c520f9aca7e88ab797214ea01610e","abstract_canon_sha256":"e574468dafb944077e39664de18a8d47f5abc02e234c627c344fc93498754089"},"schema_version":"1.0"},"canonical_sha256":"bc0bd054933279167bcc46d1c9cf6e7272bc444b5966fee1db97ad27b38d2377","source":{"kind":"arxiv","id":"2010.11120","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2010.11120","created_at":"2026-07-05T02:10:27Z"},{"alias_kind":"arxiv_version","alias_value":"2010.11120v2","created_at":"2026-07-05T02:10:27Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2010.11120","created_at":"2026-07-05T02:10:27Z"},{"alias_kind":"pith_short_12","alias_value":"XQF5AVETGJ4R","created_at":"2026-07-05T02:10:27Z"},{"alias_kind":"pith_short_16","alias_value":"XQF5AVETGJ4RM66M","created_at":"2026-07-05T02:10:27Z"},{"alias_kind":"pith_short_8","alias_value":"XQF5AVET","created_at":"2026-07-05T02:10:27Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:XQF5AVETGJ4RM66MI3I4TT3OOJ","target":"record","payload":{"canonical_record":{"source":{"id":"2010.11120","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.flu-dyn","submitted_at":"2020-10-21T16:29:08Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"74b9bb8ecc53c26a722f1f0e67708b4c548c520f9aca7e88ab797214ea01610e","abstract_canon_sha256":"e574468dafb944077e39664de18a8d47f5abc02e234c627c344fc93498754089"},"schema_version":"1.0"},"canonical_sha256":"bc0bd054933279167bcc46d1c9cf6e7272bc444b5966fee1db97ad27b38d2377","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T02:10:27.219378Z","signature_b64":"qswvI2fhiBHoKPrF9rDTb6egI663hJj+bQm8O10kESkMdETYWCP6EslomoXZ6B8qUTzMtGsfwieYIPEAKviVDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"bc0bd054933279167bcc46d1c9cf6e7272bc444b5966fee1db97ad27b38d2377","last_reissued_at":"2026-07-05T02:10:27.218927Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T02:10:27.218927Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2010.11120","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T02:10:27Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"R8TwujPXo0An7hYwRrX1dbxyBAi+Io4mGxhpM4vAKKcgv70jAgdciQyHdHWnPQU6Br9B+BrBgyOr1DUQpmcfAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-31T14:18:41.276535Z"},"content_sha256":"262ddb5fe02210360746907c0d71913ce47fcb3896813b19a88666f3042d1356","schema_version":"1.0","event_id":"sha256:262ddb5fe02210360746907c0d71913ce47fcb3896813b19a88666f3042d1356"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:XQF5AVETGJ4RM66MI3I4TT3OOJ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Non-Boussinesq low-Prandtl number convection with a temperature-dependent thermal diffusivity","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"physics.flu-dyn","authors_text":"Ambrish Pandey, J\\\"org Schumacher, Katepalli R. Sreenivasan","submitted_at":"2020-10-21T16:29:08Z","abstract_excerpt":"In an attempt to understand the role of the strong radial dependence of thermal diffusivity on the properties of convection in sun-like stars, we mimic that effect in non-Oberbeck-Boussinesq (NOB) convection in a horizontally-extended rectangular domain (aspect ratio 16), by allowing the thermal diffusivity $\\kappa$ to increase with the temperature (as in the case of stars). Direct numerical simulations (i.e., numerical solutions of the governing equations by resolving up to the smallest scales without requiring any modeling) show that, in comparison with Oberbeck-Boussinesq (OB) simulations ("},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2010.11120","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2010.11120/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-05T02:10:27Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"QFknLTU0dtE+yiV7NXMZot9146PuAl4WfdbcEp95qCTscWopBhJ8yzBjUz1yO44agWGjMsMSqEOfh5fpnC43Aw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-31T14:18:41.276998Z"},"content_sha256":"2186fdcef2d0788f781aac23edcd94225d699ca710b86e566418686310b55690","schema_version":"1.0","event_id":"sha256:2186fdcef2d0788f781aac23edcd94225d699ca710b86e566418686310b55690"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/XQF5AVETGJ4RM66MI3I4TT3OOJ/bundle.json","state_url":"https://pith.science/pith/XQF5AVETGJ4RM66MI3I4TT3OOJ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/XQF5AVETGJ4RM66MI3I4TT3OOJ/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":"2026-07-31T14:18:41Z","links":{"resolver":"https://pith.science/pith/XQF5AVETGJ4RM66MI3I4TT3OOJ","bundle":"https://pith.science/pith/XQF5AVETGJ4RM66MI3I4TT3OOJ/bundle.json","state":"https://pith.science/pith/XQF5AVETGJ4RM66MI3I4TT3OOJ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/XQF5AVETGJ4RM66MI3I4TT3OOJ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:XQF5AVETGJ4RM66MI3I4TT3OOJ","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":"e574468dafb944077e39664de18a8d47f5abc02e234c627c344fc93498754089","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.flu-dyn","submitted_at":"2020-10-21T16:29:08Z","title_canon_sha256":"74b9bb8ecc53c26a722f1f0e67708b4c548c520f9aca7e88ab797214ea01610e"},"schema_version":"1.0","source":{"id":"2010.11120","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2010.11120","created_at":"2026-07-05T02:10:27Z"},{"alias_kind":"arxiv_version","alias_value":"2010.11120v2","created_at":"2026-07-05T02:10:27Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2010.11120","created_at":"2026-07-05T02:10:27Z"},{"alias_kind":"pith_short_12","alias_value":"XQF5AVETGJ4R","created_at":"2026-07-05T02:10:27Z"},{"alias_kind":"pith_short_16","alias_value":"XQF5AVETGJ4RM66M","created_at":"2026-07-05T02:10:27Z"},{"alias_kind":"pith_short_8","alias_value":"XQF5AVET","created_at":"2026-07-05T02:10:27Z"}],"graph_snapshots":[{"event_id":"sha256:2186fdcef2d0788f781aac23edcd94225d699ca710b86e566418686310b55690","target":"graph","created_at":"2026-07-05T02:10:27Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2010.11120/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"In an attempt to understand the role of the strong radial dependence of thermal diffusivity on the properties of convection in sun-like stars, we mimic that effect in non-Oberbeck-Boussinesq (NOB) convection in a horizontally-extended rectangular domain (aspect ratio 16), by allowing the thermal diffusivity $\\kappa$ to increase with the temperature (as in the case of stars). Direct numerical simulations (i.e., numerical solutions of the governing equations by resolving up to the smallest scales without requiring any modeling) show that, in comparison with Oberbeck-Boussinesq (OB) simulations (","authors_text":"Ambrish Pandey, J\\\"org Schumacher, Katepalli R. Sreenivasan","cross_cats":["astro-ph.SR"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.flu-dyn","submitted_at":"2020-10-21T16:29:08Z","title":"Non-Boussinesq low-Prandtl number convection with a temperature-dependent thermal diffusivity"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2010.11120","kind":"arxiv","version":2},"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":"sha256:262ddb5fe02210360746907c0d71913ce47fcb3896813b19a88666f3042d1356","target":"record","created_at":"2026-07-05T02:10:27Z","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":"e574468dafb944077e39664de18a8d47f5abc02e234c627c344fc93498754089","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.flu-dyn","submitted_at":"2020-10-21T16:29:08Z","title_canon_sha256":"74b9bb8ecc53c26a722f1f0e67708b4c548c520f9aca7e88ab797214ea01610e"},"schema_version":"1.0","source":{"id":"2010.11120","kind":"arxiv","version":2}},"canonical_sha256":"bc0bd054933279167bcc46d1c9cf6e7272bc444b5966fee1db97ad27b38d2377","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"bc0bd054933279167bcc46d1c9cf6e7272bc444b5966fee1db97ad27b38d2377","first_computed_at":"2026-07-05T02:10:27.218927Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T02:10:27.218927Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"qswvI2fhiBHoKPrF9rDTb6egI663hJj+bQm8O10kESkMdETYWCP6EslomoXZ6B8qUTzMtGsfwieYIPEAKviVDg==","signature_status":"signed_v1","signed_at":"2026-07-05T02:10:27.219378Z","signed_message":"canonical_sha256_bytes"},"source_id":"2010.11120","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:262ddb5fe02210360746907c0d71913ce47fcb3896813b19a88666f3042d1356","sha256:2186fdcef2d0788f781aac23edcd94225d699ca710b86e566418686310b55690"],"state_sha256":"b5681b4e72cc3490c58d62079d46f7ed05db86c925e86ef0fd494fb0a9d0f20c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"v97Xntlz9f33j9plMdGZvQuN/aVWNpBys1Sq6bVDD8zD8KzHc3vDgNDvxOUnBW9I11o5DTouw/VUyfQCV40DAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-31T14:18:41.280081Z","bundle_sha256":"17c0b7899698e9dccce42d8ba52b06a6705c21f7af6147f5c6c9ca83e818b850"}}