{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:ADXYJAZMNW5REUKVNDAOW4EGW2","short_pith_number":"pith:ADXYJAZM","canonical_record":{"source":{"id":"1901.10529","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2019-01-28T15:19:55Z","cross_cats_sorted":[],"title_canon_sha256":"af24837550ecbde51a051e37d473c7c6bb211b57882e608af3be2bd3c35b7494","abstract_canon_sha256":"a18bf1d3fe59a052921fac3473060d8d7ea0298a41198bfd473dcc355f556bea"},"schema_version":"1.0"},"canonical_sha256":"00ef84832c6dbb12515568c0eb7086b68f0aec4f556a594da6e0585c10e972f2","source":{"kind":"arxiv","id":"1901.10529","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1901.10529","created_at":"2026-05-17T23:50:55Z"},{"alias_kind":"arxiv_version","alias_value":"1901.10529v2","created_at":"2026-05-17T23:50:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1901.10529","created_at":"2026-05-17T23:50:55Z"},{"alias_kind":"pith_short_12","alias_value":"ADXYJAZMNW5R","created_at":"2026-05-18T12:33:12Z"},{"alias_kind":"pith_short_16","alias_value":"ADXYJAZMNW5REUKV","created_at":"2026-05-18T12:33:12Z"},{"alias_kind":"pith_short_8","alias_value":"ADXYJAZM","created_at":"2026-05-18T12:33:12Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:ADXYJAZMNW5REUKVNDAOW4EGW2","target":"record","payload":{"canonical_record":{"source":{"id":"1901.10529","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2019-01-28T15:19:55Z","cross_cats_sorted":[],"title_canon_sha256":"af24837550ecbde51a051e37d473c7c6bb211b57882e608af3be2bd3c35b7494","abstract_canon_sha256":"a18bf1d3fe59a052921fac3473060d8d7ea0298a41198bfd473dcc355f556bea"},"schema_version":"1.0"},"canonical_sha256":"00ef84832c6dbb12515568c0eb7086b68f0aec4f556a594da6e0585c10e972f2","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:50:55.995383Z","signature_b64":"6MvOGIfZss7C5PpChs5ZiWavBUExU9lqTGKhtcl2XfUoy3Hzy7u5DXd/iqqnFninSnY90E5MFzKKD9BJoMiWBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"00ef84832c6dbb12515568c0eb7086b68f0aec4f556a594da6e0585c10e972f2","last_reissued_at":"2026-05-17T23:50:55.994728Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:50:55.994728Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1901.10529","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":"2026-05-17T23:50:55Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"gxRcqsupyQQvPsIzXDgF9a+399N8J8y9EFfONsVyPm/h9qgK6kThawknUnV4O8ONmvhS2IBf+cZouJtxVHwcBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-29T23:47:14.814036Z"},"content_sha256":"659a720eeb6e59fc3d9a3495b91627ed6105b40dc2b5850ac940ecb22fe3eb82","schema_version":"1.0","event_id":"sha256:659a720eeb6e59fc3d9a3495b91627ed6105b40dc2b5850ac940ecb22fe3eb82"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:ADXYJAZMNW5REUKVNDAOW4EGW2","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Timing Properties of Shocked Accretion Flows around Neutron Stars in Presence of Cooling","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"Ayan Bhattacharjee, Sandip K. Chakrabarti","submitted_at":"2019-01-28T15:19:55Z","abstract_excerpt":"We carry out the first robust numerical simulation of accretion flows on a weakly magnetized neutron star using Smoothed Particle Hydrodynamics (SPH). We follow the Two-Component Advective Flow (TCAF) paradigm for black holes, and focus only on the advective component for the case of a neutron star. This low viscosity sub-Keplerian flow will create a normal boundary layer (or, NBOL) right on the star surface in addition to the centrifugal pressure supported boundary layer (or, CENBOL) present in a black hole accretion. These density jumps could give rise to standing or oscillating shock fronts"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1901.10529","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":""},"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":"2026-05-17T23:50:55Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6KmLaeuw/i1APv+L/caB/rUqpmn1nuz6TYol4nl8XPifPHqfXx1vKAXsPb2dUCl0S8QW2DajMJcyWySmDXkrCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-29T23:47:14.814710Z"},"content_sha256":"78c444519aae9d32bba7b7ba58369595e94dfc417b964668a595c4e21b01c9a5","schema_version":"1.0","event_id":"sha256:78c444519aae9d32bba7b7ba58369595e94dfc417b964668a595c4e21b01c9a5"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ADXYJAZMNW5REUKVNDAOW4EGW2/bundle.json","state_url":"https://pith.science/pith/ADXYJAZMNW5REUKVNDAOW4EGW2/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ADXYJAZMNW5REUKVNDAOW4EGW2/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":"2026-05-29T23:47:14Z","links":{"resolver":"https://pith.science/pith/ADXYJAZMNW5REUKVNDAOW4EGW2","bundle":"https://pith.science/pith/ADXYJAZMNW5REUKVNDAOW4EGW2/bundle.json","state":"https://pith.science/pith/ADXYJAZMNW5REUKVNDAOW4EGW2/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ADXYJAZMNW5REUKVNDAOW4EGW2/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:ADXYJAZMNW5REUKVNDAOW4EGW2","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":"a18bf1d3fe59a052921fac3473060d8d7ea0298a41198bfd473dcc355f556bea","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2019-01-28T15:19:55Z","title_canon_sha256":"af24837550ecbde51a051e37d473c7c6bb211b57882e608af3be2bd3c35b7494"},"schema_version":"1.0","source":{"id":"1901.10529","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1901.10529","created_at":"2026-05-17T23:50:55Z"},{"alias_kind":"arxiv_version","alias_value":"1901.10529v2","created_at":"2026-05-17T23:50:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1901.10529","created_at":"2026-05-17T23:50:55Z"},{"alias_kind":"pith_short_12","alias_value":"ADXYJAZMNW5R","created_at":"2026-05-18T12:33:12Z"},{"alias_kind":"pith_short_16","alias_value":"ADXYJAZMNW5REUKV","created_at":"2026-05-18T12:33:12Z"},{"alias_kind":"pith_short_8","alias_value":"ADXYJAZM","created_at":"2026-05-18T12:33:12Z"}],"graph_snapshots":[{"event_id":"sha256:78c444519aae9d32bba7b7ba58369595e94dfc417b964668a595c4e21b01c9a5","target":"graph","created_at":"2026-05-17T23:50:55Z","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":"We carry out the first robust numerical simulation of accretion flows on a weakly magnetized neutron star using Smoothed Particle Hydrodynamics (SPH). We follow the Two-Component Advective Flow (TCAF) paradigm for black holes, and focus only on the advective component for the case of a neutron star. This low viscosity sub-Keplerian flow will create a normal boundary layer (or, NBOL) right on the star surface in addition to the centrifugal pressure supported boundary layer (or, CENBOL) present in a black hole accretion. These density jumps could give rise to standing or oscillating shock fronts","authors_text":"Ayan Bhattacharjee, Sandip K. Chakrabarti","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2019-01-28T15:19:55Z","title":"Timing Properties of Shocked Accretion Flows around Neutron Stars in Presence of Cooling"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1901.10529","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":"sha256:659a720eeb6e59fc3d9a3495b91627ed6105b40dc2b5850ac940ecb22fe3eb82","target":"record","created_at":"2026-05-17T23:50:55Z","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":"a18bf1d3fe59a052921fac3473060d8d7ea0298a41198bfd473dcc355f556bea","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2019-01-28T15:19:55Z","title_canon_sha256":"af24837550ecbde51a051e37d473c7c6bb211b57882e608af3be2bd3c35b7494"},"schema_version":"1.0","source":{"id":"1901.10529","kind":"arxiv","version":2}},"canonical_sha256":"00ef84832c6dbb12515568c0eb7086b68f0aec4f556a594da6e0585c10e972f2","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"00ef84832c6dbb12515568c0eb7086b68f0aec4f556a594da6e0585c10e972f2","first_computed_at":"2026-05-17T23:50:55.994728Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:50:55.994728Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"6MvOGIfZss7C5PpChs5ZiWavBUExU9lqTGKhtcl2XfUoy3Hzy7u5DXd/iqqnFninSnY90E5MFzKKD9BJoMiWBw==","signature_status":"signed_v1","signed_at":"2026-05-17T23:50:55.995383Z","signed_message":"canonical_sha256_bytes"},"source_id":"1901.10529","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:659a720eeb6e59fc3d9a3495b91627ed6105b40dc2b5850ac940ecb22fe3eb82","sha256:78c444519aae9d32bba7b7ba58369595e94dfc417b964668a595c4e21b01c9a5"],"state_sha256":"91c08e2c9a4263656f782fc2d34387592e67107f4ec508180f03b1c0ebc090f3"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"sfemJ69F3TCMXh9RIhi8B9r1SPMdXaqcoOgtlEUgBZmPwmvEclW0NZ6sVKVq7tmUVveivjxHKhDKL/snxFH+Ag==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-29T23:47:14.817780Z","bundle_sha256":"c7a23b1e6f5defb12f770d49e7b17be42967605cd2634177f14d04affec37a59"}}