{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:1993:H5P4W4XTQI7N6ANU2OWVAO4CCL","short_pith_number":"pith:H5P4W4XT","canonical_record":{"source":{"id":"astro-ph/9310047","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"1993-10-27T07:48:00Z","cross_cats_sorted":[],"title_canon_sha256":"2121c5700b173fcd1e9dee62b09b432201f8c72931be58c0284e9f9c04b198e7","abstract_canon_sha256":"aea7448d4d166de16fa7d232781d0f5e828208eb12d3cc12cd5d6dce71966bfe"},"schema_version":"1.0"},"canonical_sha256":"3f5fcb72f3823edf01b4d3ad503b8212d7da3c2f8d52bade7df28d58a4bb261f","source":{"kind":"arxiv","id":"astro-ph/9310047","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/9310047","created_at":"2026-07-04T15:55:08Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/9310047v1","created_at":"2026-07-04T15:55:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/9310047","created_at":"2026-07-04T15:55:08Z"},{"alias_kind":"pith_short_12","alias_value":"H5P4W4XTQI7N","created_at":"2026-07-04T15:55:08Z"},{"alias_kind":"pith_short_16","alias_value":"H5P4W4XTQI7N6ANU","created_at":"2026-07-04T15:55:08Z"},{"alias_kind":"pith_short_8","alias_value":"H5P4W4XT","created_at":"2026-07-04T15:55:08Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:1993:H5P4W4XTQI7N6ANU2OWVAO4CCL","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/9310047","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"1993-10-27T07:48:00Z","cross_cats_sorted":[],"title_canon_sha256":"2121c5700b173fcd1e9dee62b09b432201f8c72931be58c0284e9f9c04b198e7","abstract_canon_sha256":"aea7448d4d166de16fa7d232781d0f5e828208eb12d3cc12cd5d6dce71966bfe"},"schema_version":"1.0"},"canonical_sha256":"3f5fcb72f3823edf01b4d3ad503b8212d7da3c2f8d52bade7df28d58a4bb261f","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T15:55:08.454907Z","signature_b64":"Hg/TRsMHnsaT1wtp8Em0lnwcnvvHKxJ7ujslrIqV7RpGR207tHgcMfimJ4kHswX1Z3fyrJNJ0JloOjeb/2eODQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3f5fcb72f3823edf01b4d3ad503b8212d7da3c2f8d52bade7df28d58a4bb261f","last_reissued_at":"2026-07-04T15:55:08.454504Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T15:55:08.454504Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/9310047","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":"2026-07-04T15:55:08Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5aSkqq+6YfUDfEwEIxQenxe58kyACmtqhIDDwK/WYuIluDMgt/JDNSTctpGPZ/Q8xGOrxk9fYbvrPFhWNXCiCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T13:26:26.089742Z"},"content_sha256":"1b52428ebd8a604cf8e65480c0e6674a7b2fc42cf927dfbb2edcbb6a4a8cacb6","schema_version":"1.0","event_id":"sha256:1b52428ebd8a604cf8e65480c0e6674a7b2fc42cf927dfbb2edcbb6a4a8cacb6"},{"event_type":"graph_snapshot","subject_pith_number":"pith:1993:H5P4W4XTQI7N6ANU2OWVAO4CCL","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Simulation of Thick Accretion Disks with Standing Shocks by Smoothed Particle Hydrodynamics","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"Diego Molteni, G. Lanzafame, S. K. Chakrabarti","submitted_at":"1993-10-27T07:48:00Z","abstract_excerpt":"We present results of numerical simulation of inviscid thick accretion disks and wind flows around black holes. We use Smoothed Particle Hydrodynamics (SPH) technique for this purpose. Formation of thick disks are found to be preceded by shock waves travelling away from the centrifugal barrier. For a large range of the parameter space, the travelling shock settles at a distance close to the location obtained by a one-and-a-half dimensional model of inviscid accretion disks. Occasionally, it is observed that accretion processes are aided by the formation of oblique shock waves, particularly in "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/9310047","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/astro-ph/9310047/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":"2026-07-04T15:55:08Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"XSpsznK3qxFzxp8W7/0ISeQ/yXG/79Vi4Dh/j+vMy7EWp9MSU1MNPcAE7FZHGxIqD3sFhSrFds7+98f9Obt/Dw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T13:26:26.091949Z"},"content_sha256":"c3f04daa640cce0c0b43380fd7391ebdeb8bf47ec2395d69c0c2825a9ae81a72","schema_version":"1.0","event_id":"sha256:c3f04daa640cce0c0b43380fd7391ebdeb8bf47ec2395d69c0c2825a9ae81a72"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/H5P4W4XTQI7N6ANU2OWVAO4CCL/bundle.json","state_url":"https://pith.science/pith/H5P4W4XTQI7N6ANU2OWVAO4CCL/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/H5P4W4XTQI7N6ANU2OWVAO4CCL/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":"2026-08-05T13:26:26Z","links":{"resolver":"https://pith.science/pith/H5P4W4XTQI7N6ANU2OWVAO4CCL","bundle":"https://pith.science/pith/H5P4W4XTQI7N6ANU2OWVAO4CCL/bundle.json","state":"https://pith.science/pith/H5P4W4XTQI7N6ANU2OWVAO4CCL/state.json","well_known_bundle":"https://pith.science/.well-known/pith/H5P4W4XTQI7N6ANU2OWVAO4CCL/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:1993:H5P4W4XTQI7N6ANU2OWVAO4CCL","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":"aea7448d4d166de16fa7d232781d0f5e828208eb12d3cc12cd5d6dce71966bfe","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"1993-10-27T07:48:00Z","title_canon_sha256":"2121c5700b173fcd1e9dee62b09b432201f8c72931be58c0284e9f9c04b198e7"},"schema_version":"1.0","source":{"id":"astro-ph/9310047","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/9310047","created_at":"2026-07-04T15:55:08Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/9310047v1","created_at":"2026-07-04T15:55:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/9310047","created_at":"2026-07-04T15:55:08Z"},{"alias_kind":"pith_short_12","alias_value":"H5P4W4XTQI7N","created_at":"2026-07-04T15:55:08Z"},{"alias_kind":"pith_short_16","alias_value":"H5P4W4XTQI7N6ANU","created_at":"2026-07-04T15:55:08Z"},{"alias_kind":"pith_short_8","alias_value":"H5P4W4XT","created_at":"2026-07-04T15:55:08Z"}],"graph_snapshots":[{"event_id":"sha256:c3f04daa640cce0c0b43380fd7391ebdeb8bf47ec2395d69c0c2825a9ae81a72","target":"graph","created_at":"2026-07-04T15:55:08Z","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/astro-ph/9310047/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We present results of numerical simulation of inviscid thick accretion disks and wind flows around black holes. We use Smoothed Particle Hydrodynamics (SPH) technique for this purpose. Formation of thick disks are found to be preceded by shock waves travelling away from the centrifugal barrier. For a large range of the parameter space, the travelling shock settles at a distance close to the location obtained by a one-and-a-half dimensional model of inviscid accretion disks. Occasionally, it is observed that accretion processes are aided by the formation of oblique shock waves, particularly in ","authors_text":"Diego Molteni, G. Lanzafame, S. K. Chakrabarti","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"1993-10-27T07:48:00Z","title":"Simulation of Thick Accretion Disks with Standing Shocks by Smoothed Particle Hydrodynamics"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/9310047","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":"sha256:1b52428ebd8a604cf8e65480c0e6674a7b2fc42cf927dfbb2edcbb6a4a8cacb6","target":"record","created_at":"2026-07-04T15:55:08Z","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":"aea7448d4d166de16fa7d232781d0f5e828208eb12d3cc12cd5d6dce71966bfe","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"1993-10-27T07:48:00Z","title_canon_sha256":"2121c5700b173fcd1e9dee62b09b432201f8c72931be58c0284e9f9c04b198e7"},"schema_version":"1.0","source":{"id":"astro-ph/9310047","kind":"arxiv","version":1}},"canonical_sha256":"3f5fcb72f3823edf01b4d3ad503b8212d7da3c2f8d52bade7df28d58a4bb261f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3f5fcb72f3823edf01b4d3ad503b8212d7da3c2f8d52bade7df28d58a4bb261f","first_computed_at":"2026-07-04T15:55:08.454504Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T15:55:08.454504Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Hg/TRsMHnsaT1wtp8Em0lnwcnvvHKxJ7ujslrIqV7RpGR207tHgcMfimJ4kHswX1Z3fyrJNJ0JloOjeb/2eODQ==","signature_status":"signed_v1","signed_at":"2026-07-04T15:55:08.454907Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/9310047","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1b52428ebd8a604cf8e65480c0e6674a7b2fc42cf927dfbb2edcbb6a4a8cacb6","sha256:c3f04daa640cce0c0b43380fd7391ebdeb8bf47ec2395d69c0c2825a9ae81a72"],"state_sha256":"6bedb1bb88ca58082f684919c1552fdf5347e5a8cc430bbc001a98ab7504985f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"YsDVt1KFaua78iJWtwf5GBYPvUpaqmgi/tvkaEreV+J0fu6E0tzN3mkEwNTOFMPfP0d6D8jcrUkWDZaW1JAQDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-05T13:26:26.103228Z","bundle_sha256":"eedf972938044d35b5ae6999572f9e49b5b56284096205eaed9a27ab7fa26537"}}