{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:DT3RNPT7K6XKRZD65WK7WZ32HX","short_pith_number":"pith:DT3RNPT7","canonical_record":{"source":{"id":"2506.01557","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2025-06-02T11:35:26Z","cross_cats_sorted":["astro-ph.HE"],"title_canon_sha256":"5914cbc4aff1648b10632923b9e99c2c44437c6a3e3277071e414590475cafad","abstract_canon_sha256":"c02cd6991b8feb6445c4d1b5c078513ab4ecd861b8df97c0a7e097dae528fffe"},"schema_version":"1.0"},"canonical_sha256":"1cf716be7f57aea8e47eed95fb677a3dfc61cc1a09c78f16b8af851c9990879e","source":{"kind":"arxiv","id":"2506.01557","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2506.01557","created_at":"2026-07-05T11:14:15Z"},{"alias_kind":"arxiv_version","alias_value":"2506.01557v1","created_at":"2026-07-05T11:14:15Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2506.01557","created_at":"2026-07-05T11:14:15Z"},{"alias_kind":"pith_short_12","alias_value":"DT3RNPT7K6XK","created_at":"2026-07-05T11:14:15Z"},{"alias_kind":"pith_short_16","alias_value":"DT3RNPT7K6XKRZD6","created_at":"2026-07-05T11:14:15Z"},{"alias_kind":"pith_short_8","alias_value":"DT3RNPT7","created_at":"2026-07-05T11:14:15Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:DT3RNPT7K6XKRZD65WK7WZ32HX","target":"record","payload":{"canonical_record":{"source":{"id":"2506.01557","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2025-06-02T11:35:26Z","cross_cats_sorted":["astro-ph.HE"],"title_canon_sha256":"5914cbc4aff1648b10632923b9e99c2c44437c6a3e3277071e414590475cafad","abstract_canon_sha256":"c02cd6991b8feb6445c4d1b5c078513ab4ecd861b8df97c0a7e097dae528fffe"},"schema_version":"1.0"},"canonical_sha256":"1cf716be7f57aea8e47eed95fb677a3dfc61cc1a09c78f16b8af851c9990879e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T11:14:15.789637Z","signature_b64":"6s2xT7DBsxUUJZXFYKGEG7B0q8brSdDdXZx61lqym7WtmyF/reoGgRkTsyrphfKSW7cWP5OaauGUg9dwUJjuAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"1cf716be7f57aea8e47eed95fb677a3dfc61cc1a09c78f16b8af851c9990879e","last_reissued_at":"2026-07-05T11:14:15.789178Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T11:14:15.789178Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2506.01557","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":"2026-07-05T11:14:15Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"K727FYFQaeivYd/EghB9l1qNSELwQI9rPXDcUOLrMXqTB0m376T45wFMmugouSyTncy9LShPD58IyNZ2IXlJAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-21T05:42:06.668115Z"},"content_sha256":"2f2daf61fb911f026fb7b0a8d4acafc389a5987477df0c1c25c36e8cdc8a0059","schema_version":"1.0","event_id":"sha256:2f2daf61fb911f026fb7b0a8d4acafc389a5987477df0c1c25c36e8cdc8a0059"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:DT3RNPT7K6XKRZD65WK7WZ32HX","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A general relativistic hydrodynamic simulation code for studying advective, sub-Keplerian accretion flow onto black holes","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["astro-ph.HE"],"primary_cat":"astro-ph.IM","authors_text":"Sudip K Garain","submitted_at":"2025-06-02T11:35:26Z","abstract_excerpt":"In this paper, we describe a general relativistic hydrodynamics simulation code which is developed to simulate advective accretion flow onto black holes. We are particularly interested in the accretion simulations of sub-Keplerian matter in the close vicinity of black holes. Due to the presence of centrifugal barrier, a nearly free-falling sub-Keplerian accretion flow slows down close to a black hole and can even pass through shocks before accelerating again to the black hole. We design our simulation code using the high resolution shock capturing scheme so that such shock structures can be ca"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2506.01557","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/2506.01557/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":"2026-07-05T11:14:15Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"MtADJxnOoEtNZ8KDulzYn9Wquv1WcIDG6UtI+Oojkb+45s5GygKyyxtu9Yfhk08bIP27M0Dys3Bv/BlrISJ7AQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-21T05:42:06.668680Z"},"content_sha256":"53dc6f71c7048cbdd71490fdb70065a3284d6bec0236e91c8a2e481b1d4372d5","schema_version":"1.0","event_id":"sha256:53dc6f71c7048cbdd71490fdb70065a3284d6bec0236e91c8a2e481b1d4372d5"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/DT3RNPT7K6XKRZD65WK7WZ32HX/bundle.json","state_url":"https://pith.science/pith/DT3RNPT7K6XKRZD65WK7WZ32HX/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/DT3RNPT7K6XKRZD65WK7WZ32HX/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":"2026-08-21T05:42:06Z","links":{"resolver":"https://pith.science/pith/DT3RNPT7K6XKRZD65WK7WZ32HX","bundle":"https://pith.science/pith/DT3RNPT7K6XKRZD65WK7WZ32HX/bundle.json","state":"https://pith.science/pith/DT3RNPT7K6XKRZD65WK7WZ32HX/state.json","well_known_bundle":"https://pith.science/.well-known/pith/DT3RNPT7K6XKRZD65WK7WZ32HX/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:DT3RNPT7K6XKRZD65WK7WZ32HX","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":"c02cd6991b8feb6445c4d1b5c078513ab4ecd861b8df97c0a7e097dae528fffe","cross_cats_sorted":["astro-ph.HE"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2025-06-02T11:35:26Z","title_canon_sha256":"5914cbc4aff1648b10632923b9e99c2c44437c6a3e3277071e414590475cafad"},"schema_version":"1.0","source":{"id":"2506.01557","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2506.01557","created_at":"2026-07-05T11:14:15Z"},{"alias_kind":"arxiv_version","alias_value":"2506.01557v1","created_at":"2026-07-05T11:14:15Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2506.01557","created_at":"2026-07-05T11:14:15Z"},{"alias_kind":"pith_short_12","alias_value":"DT3RNPT7K6XK","created_at":"2026-07-05T11:14:15Z"},{"alias_kind":"pith_short_16","alias_value":"DT3RNPT7K6XKRZD6","created_at":"2026-07-05T11:14:15Z"},{"alias_kind":"pith_short_8","alias_value":"DT3RNPT7","created_at":"2026-07-05T11:14:15Z"}],"graph_snapshots":[{"event_id":"sha256:53dc6f71c7048cbdd71490fdb70065a3284d6bec0236e91c8a2e481b1d4372d5","target":"graph","created_at":"2026-07-05T11:14:15Z","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/2506.01557/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"In this paper, we describe a general relativistic hydrodynamics simulation code which is developed to simulate advective accretion flow onto black holes. We are particularly interested in the accretion simulations of sub-Keplerian matter in the close vicinity of black holes. Due to the presence of centrifugal barrier, a nearly free-falling sub-Keplerian accretion flow slows down close to a black hole and can even pass through shocks before accelerating again to the black hole. We design our simulation code using the high resolution shock capturing scheme so that such shock structures can be ca","authors_text":"Sudip K Garain","cross_cats":["astro-ph.HE"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2025-06-02T11:35:26Z","title":"A general relativistic hydrodynamic simulation code for studying advective, sub-Keplerian accretion flow onto black holes"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2506.01557","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":"sha256:2f2daf61fb911f026fb7b0a8d4acafc389a5987477df0c1c25c36e8cdc8a0059","target":"record","created_at":"2026-07-05T11:14:15Z","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":"c02cd6991b8feb6445c4d1b5c078513ab4ecd861b8df97c0a7e097dae528fffe","cross_cats_sorted":["astro-ph.HE"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2025-06-02T11:35:26Z","title_canon_sha256":"5914cbc4aff1648b10632923b9e99c2c44437c6a3e3277071e414590475cafad"},"schema_version":"1.0","source":{"id":"2506.01557","kind":"arxiv","version":1}},"canonical_sha256":"1cf716be7f57aea8e47eed95fb677a3dfc61cc1a09c78f16b8af851c9990879e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"1cf716be7f57aea8e47eed95fb677a3dfc61cc1a09c78f16b8af851c9990879e","first_computed_at":"2026-07-05T11:14:15.789178Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T11:14:15.789178Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"6s2xT7DBsxUUJZXFYKGEG7B0q8brSdDdXZx61lqym7WtmyF/reoGgRkTsyrphfKSW7cWP5OaauGUg9dwUJjuAA==","signature_status":"signed_v1","signed_at":"2026-07-05T11:14:15.789637Z","signed_message":"canonical_sha256_bytes"},"source_id":"2506.01557","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2f2daf61fb911f026fb7b0a8d4acafc389a5987477df0c1c25c36e8cdc8a0059","sha256:53dc6f71c7048cbdd71490fdb70065a3284d6bec0236e91c8a2e481b1d4372d5"],"state_sha256":"2c302c350aaf89b8cf99451e68226733d0ead5b0df8102978ee473663c03d430"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"qWc54cAeCNbR6LPogt2ycyWOYg2uz3kpci1O6dd2eUCw4RMk66WWDoIxelNxof6VmzCP3ZO6wyleQbXaNoXzAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-21T05:42:06.673517Z","bundle_sha256":"f91efa984b940ce9331d47b7edf3c4fab5f48ff6e2959f1847e4fe8aae6954b7"}}