{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:Z4LFAS5JXPJQ5WJJZANEH7QNJH","short_pith_number":"pith:Z4LFAS5J","canonical_record":{"source":{"id":"1505.02172","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2015-05-08T20:32:23Z","cross_cats_sorted":[],"title_canon_sha256":"fbc4bca0efb5ce1c6f5a1dc261d9c39175cde74e251224799c6df60fc3e742f4","abstract_canon_sha256":"2851b455e416f8eb3348d649b1c4afccbeb4d124a36a415ce07e5a74d202133a"},"schema_version":"1.0"},"canonical_sha256":"cf16504ba9bbd30ed929c81a43fe0d49c5c3953dd09265c6c4d93447fb76d22d","source":{"kind":"arxiv","id":"1505.02172","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1505.02172","created_at":"2026-05-18T01:08:44Z"},{"alias_kind":"arxiv_version","alias_value":"1505.02172v3","created_at":"2026-05-18T01:08:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1505.02172","created_at":"2026-05-18T01:08:44Z"},{"alias_kind":"pith_short_12","alias_value":"Z4LFAS5JXPJQ","created_at":"2026-05-18T12:29:52Z"},{"alias_kind":"pith_short_16","alias_value":"Z4LFAS5JXPJQ5WJJ","created_at":"2026-05-18T12:29:52Z"},{"alias_kind":"pith_short_8","alias_value":"Z4LFAS5J","created_at":"2026-05-18T12:29:52Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:Z4LFAS5JXPJQ5WJJZANEH7QNJH","target":"record","payload":{"canonical_record":{"source":{"id":"1505.02172","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2015-05-08T20:32:23Z","cross_cats_sorted":[],"title_canon_sha256":"fbc4bca0efb5ce1c6f5a1dc261d9c39175cde74e251224799c6df60fc3e742f4","abstract_canon_sha256":"2851b455e416f8eb3348d649b1c4afccbeb4d124a36a415ce07e5a74d202133a"},"schema_version":"1.0"},"canonical_sha256":"cf16504ba9bbd30ed929c81a43fe0d49c5c3953dd09265c6c4d93447fb76d22d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:08:44.766635Z","signature_b64":"wTGUKJB/2K9P3V985GZOtrVb6+evKVer0jmHY9nGpMQZikryJD8snvmvwBuETb0WYHVf2W3OnCVWXTM5kMyKBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"cf16504ba9bbd30ed929c81a43fe0d49c5c3953dd09265c6c4d93447fb76d22d","last_reissued_at":"2026-05-18T01:08:44.766208Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:08:44.766208Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1505.02172","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:08:44Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"dlKVC1A3D3Iy92YQFc48u4MPS2PfVZrqSHp3q0oCsLBjPZ1b8xQ5+DRhwPeaORziMNW3k5S+90wTkg/oyeESDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-12T00:59:24.690655Z"},"content_sha256":"de392d5b032b590f8ebb453ad05519d203485081cae7bec994da0278666a59c3","schema_version":"1.0","event_id":"sha256:de392d5b032b590f8ebb453ad05519d203485081cae7bec994da0278666a59c3"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:Z4LFAS5JXPJQ5WJJZANEH7QNJH","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Black hole accretion discs","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"Jean-Pierre Lasota (Institut d'Astrophysique de Paris, Nicolaus Copernicus Astronomical Center, Warsaw)","submitted_at":"2015-05-08T20:32:23Z","abstract_excerpt":"This is an introduction to models of accretion discs around black holes. After a presentation of the non-relativistic equations describing the structure and evolution of geometrically thin accretion discs we discuss their steady-state solutions and compare them to observation. Next we describe in detail the thermal-viscous disc instability model and its application to dwarf novae for which it was designed and its X-ray irradiated-disc version which explains the soft X--ray transients, i.e. outbursting black-hole low-mass X-ray binaries. We then turn to the role of advection in accretion flows "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1505.02172","kind":"arxiv","version":3},"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":"2026-05-18T01:08:44Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"aRS4Fv3WRknZIxZ0iZnZidrPD14hY7NiPhZ3s3mHFbfGha7QwEOG0wLEZGwGQYYgskAN4RhwHlV5H4afwGjcDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-12T00:59:24.691352Z"},"content_sha256":"3ad6abe80b2510e0a9b69588c233776b4f27aa0cedaaa85df571f0cff5f29125","schema_version":"1.0","event_id":"sha256:3ad6abe80b2510e0a9b69588c233776b4f27aa0cedaaa85df571f0cff5f29125"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/Z4LFAS5JXPJQ5WJJZANEH7QNJH/bundle.json","state_url":"https://pith.science/pith/Z4LFAS5JXPJQ5WJJZANEH7QNJH/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/Z4LFAS5JXPJQ5WJJZANEH7QNJH/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":"2026-06-12T00:59:24Z","links":{"resolver":"https://pith.science/pith/Z4LFAS5JXPJQ5WJJZANEH7QNJH","bundle":"https://pith.science/pith/Z4LFAS5JXPJQ5WJJZANEH7QNJH/bundle.json","state":"https://pith.science/pith/Z4LFAS5JXPJQ5WJJZANEH7QNJH/state.json","well_known_bundle":"https://pith.science/.well-known/pith/Z4LFAS5JXPJQ5WJJZANEH7QNJH/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:Z4LFAS5JXPJQ5WJJZANEH7QNJH","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":"2851b455e416f8eb3348d649b1c4afccbeb4d124a36a415ce07e5a74d202133a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2015-05-08T20:32:23Z","title_canon_sha256":"fbc4bca0efb5ce1c6f5a1dc261d9c39175cde74e251224799c6df60fc3e742f4"},"schema_version":"1.0","source":{"id":"1505.02172","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1505.02172","created_at":"2026-05-18T01:08:44Z"},{"alias_kind":"arxiv_version","alias_value":"1505.02172v3","created_at":"2026-05-18T01:08:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1505.02172","created_at":"2026-05-18T01:08:44Z"},{"alias_kind":"pith_short_12","alias_value":"Z4LFAS5JXPJQ","created_at":"2026-05-18T12:29:52Z"},{"alias_kind":"pith_short_16","alias_value":"Z4LFAS5JXPJQ5WJJ","created_at":"2026-05-18T12:29:52Z"},{"alias_kind":"pith_short_8","alias_value":"Z4LFAS5J","created_at":"2026-05-18T12:29:52Z"}],"graph_snapshots":[{"event_id":"sha256:3ad6abe80b2510e0a9b69588c233776b4f27aa0cedaaa85df571f0cff5f29125","target":"graph","created_at":"2026-05-18T01:08:44Z","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":"This is an introduction to models of accretion discs around black holes. After a presentation of the non-relativistic equations describing the structure and evolution of geometrically thin accretion discs we discuss their steady-state solutions and compare them to observation. Next we describe in detail the thermal-viscous disc instability model and its application to dwarf novae for which it was designed and its X-ray irradiated-disc version which explains the soft X--ray transients, i.e. outbursting black-hole low-mass X-ray binaries. We then turn to the role of advection in accretion flows ","authors_text":"Jean-Pierre Lasota (Institut d'Astrophysique de Paris, Nicolaus Copernicus Astronomical Center, Warsaw)","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2015-05-08T20:32:23Z","title":"Black hole accretion discs"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1505.02172","kind":"arxiv","version":3},"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:de392d5b032b590f8ebb453ad05519d203485081cae7bec994da0278666a59c3","target":"record","created_at":"2026-05-18T01:08:44Z","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":"2851b455e416f8eb3348d649b1c4afccbeb4d124a36a415ce07e5a74d202133a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2015-05-08T20:32:23Z","title_canon_sha256":"fbc4bca0efb5ce1c6f5a1dc261d9c39175cde74e251224799c6df60fc3e742f4"},"schema_version":"1.0","source":{"id":"1505.02172","kind":"arxiv","version":3}},"canonical_sha256":"cf16504ba9bbd30ed929c81a43fe0d49c5c3953dd09265c6c4d93447fb76d22d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"cf16504ba9bbd30ed929c81a43fe0d49c5c3953dd09265c6c4d93447fb76d22d","first_computed_at":"2026-05-18T01:08:44.766208Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:08:44.766208Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"wTGUKJB/2K9P3V985GZOtrVb6+evKVer0jmHY9nGpMQZikryJD8snvmvwBuETb0WYHVf2W3OnCVWXTM5kMyKBw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:08:44.766635Z","signed_message":"canonical_sha256_bytes"},"source_id":"1505.02172","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:de392d5b032b590f8ebb453ad05519d203485081cae7bec994da0278666a59c3","sha256:3ad6abe80b2510e0a9b69588c233776b4f27aa0cedaaa85df571f0cff5f29125"],"state_sha256":"91d0301ebf5d16f875f14a3cac70864a2eb43396aa603a6afb67794610446676"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"p7Bhi7mnqsEAY9G4+9FyNndnDnbkj4XnqtI3m6aK45970cjg8IhoBi+lhUSGscTZZEZEH8Rh/q0VQ7qybXsuCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-12T00:59:24.695937Z","bundle_sha256":"ad27ef0429473dfc127d25e8c0e380fae10adb22fbaa43621693d0bc0d2a5ac1"}}