{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2004:NF743C62PXRX3PX6FDAPHCWRLX","short_pith_number":"pith:NF743C62","canonical_record":{"source":{"id":"astro-ph/0406586","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2004-06-25T17:33:45Z","cross_cats_sorted":[],"title_canon_sha256":"7f8d4fc9adf8c3eb113f3eb97601c67f0ac0730c212c15949d3c603c65ad8abe","abstract_canon_sha256":"462e343a106fce9d5796f86516a3ebd8a7ce9f486f5c02d7d69a6abc2e40bd6d"},"schema_version":"1.0"},"canonical_sha256":"697fcd8bda7de37dbefe28c0f38ad15def09e71331dfc598774c4ec35f9d5b2a","source":{"kind":"arxiv","id":"astro-ph/0406586","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0406586","created_at":"2026-05-18T02:40:26Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0406586v1","created_at":"2026-05-18T02:40:26Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0406586","created_at":"2026-05-18T02:40:26Z"},{"alias_kind":"pith_short_12","alias_value":"NF743C62PXRX","created_at":"2026-05-18T12:25:52Z"},{"alias_kind":"pith_short_16","alias_value":"NF743C62PXRX3PX6","created_at":"2026-05-18T12:25:52Z"},{"alias_kind":"pith_short_8","alias_value":"NF743C62","created_at":"2026-05-18T12:25:52Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2004:NF743C62PXRX3PX6FDAPHCWRLX","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/0406586","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2004-06-25T17:33:45Z","cross_cats_sorted":[],"title_canon_sha256":"7f8d4fc9adf8c3eb113f3eb97601c67f0ac0730c212c15949d3c603c65ad8abe","abstract_canon_sha256":"462e343a106fce9d5796f86516a3ebd8a7ce9f486f5c02d7d69a6abc2e40bd6d"},"schema_version":"1.0"},"canonical_sha256":"697fcd8bda7de37dbefe28c0f38ad15def09e71331dfc598774c4ec35f9d5b2a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:40:26.348821Z","signature_b64":"ivkmcSvXDjYN50pXBM9Kf6xzdkqfy78wCa/wizk5j6G47LvI0VdWL4wOGlx6m3T1Z2av/EAKmFiusBDo1cmdCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"697fcd8bda7de37dbefe28c0f38ad15def09e71331dfc598774c4ec35f9d5b2a","last_reissued_at":"2026-05-18T02:40:26.348415Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:40:26.348415Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/0406586","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":"2026-05-18T02:40:26Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Cqlz7Kx2f/bEC3Qx0GB23cJEgtYa1NWYnFOqwbMAlHGx+rqfxqn0vYkpzTaS4zu/h6MdqUOVkiZPmZKiWWWsCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-07T20:01:24.342664Z"},"content_sha256":"5999f55eaca87f8bd2b5c29d633f5c5ef5011bea9ee9ac8ff8688cf0752b4827","schema_version":"1.0","event_id":"sha256:5999f55eaca87f8bd2b5c29d633f5c5ef5011bea9ee9ac8ff8688cf0752b4827"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2004:NF743C62PXRX3PX6FDAPHCWRLX","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The upper kHz QPO: a gravitationally lensed vertical oscillation","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"M. A. Abramowicz, M. Bursa, V. Karas, W. Kluzniak","submitted_at":"2004-06-25T17:33:45Z","abstract_excerpt":"We show that a luminous torus in the Schwarzschild metric oscillating along its own axis gives rise to a periodically varying flux of radiation, even though the source of radiation is steady and perfectly axisymmetric. This implies that the simplest oscillation mode in an accretion flow, axisymmetric up-and-down motion at the meridional epicyclic frequency, may be directly observable when it occurs in the inner parts of accretion flow around neutron stars and black holes. The high-frequency modulations of the X-ray flux observed in low-mass X-ray binaries at two frequencies (twin kHz QPOs) cou"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0406586","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":""},"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":"2026-05-18T02:40:26Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"gD4JsZ91qtE/Ijslg/MD5BvMhuowVKLPwfQn4mP+NboI+jPDJ51s5meABlUeHRFzg4n2JLhTMtssKdI4LRf7Cg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-07T20:01:24.343353Z"},"content_sha256":"e2f4b56d3f2403fae6b1b115d38f6eba7d04e4daafb7c412e4c921387c88e71f","schema_version":"1.0","event_id":"sha256:e2f4b56d3f2403fae6b1b115d38f6eba7d04e4daafb7c412e4c921387c88e71f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/NF743C62PXRX3PX6FDAPHCWRLX/bundle.json","state_url":"https://pith.science/pith/NF743C62PXRX3PX6FDAPHCWRLX/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/NF743C62PXRX3PX6FDAPHCWRLX/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":"2026-06-07T20:01:24Z","links":{"resolver":"https://pith.science/pith/NF743C62PXRX3PX6FDAPHCWRLX","bundle":"https://pith.science/pith/NF743C62PXRX3PX6FDAPHCWRLX/bundle.json","state":"https://pith.science/pith/NF743C62PXRX3PX6FDAPHCWRLX/state.json","well_known_bundle":"https://pith.science/.well-known/pith/NF743C62PXRX3PX6FDAPHCWRLX/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2004:NF743C62PXRX3PX6FDAPHCWRLX","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":"462e343a106fce9d5796f86516a3ebd8a7ce9f486f5c02d7d69a6abc2e40bd6d","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2004-06-25T17:33:45Z","title_canon_sha256":"7f8d4fc9adf8c3eb113f3eb97601c67f0ac0730c212c15949d3c603c65ad8abe"},"schema_version":"1.0","source":{"id":"astro-ph/0406586","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0406586","created_at":"2026-05-18T02:40:26Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0406586v1","created_at":"2026-05-18T02:40:26Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0406586","created_at":"2026-05-18T02:40:26Z"},{"alias_kind":"pith_short_12","alias_value":"NF743C62PXRX","created_at":"2026-05-18T12:25:52Z"},{"alias_kind":"pith_short_16","alias_value":"NF743C62PXRX3PX6","created_at":"2026-05-18T12:25:52Z"},{"alias_kind":"pith_short_8","alias_value":"NF743C62","created_at":"2026-05-18T12:25:52Z"}],"graph_snapshots":[{"event_id":"sha256:e2f4b56d3f2403fae6b1b115d38f6eba7d04e4daafb7c412e4c921387c88e71f","target":"graph","created_at":"2026-05-18T02:40:26Z","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 show that a luminous torus in the Schwarzschild metric oscillating along its own axis gives rise to a periodically varying flux of radiation, even though the source of radiation is steady and perfectly axisymmetric. This implies that the simplest oscillation mode in an accretion flow, axisymmetric up-and-down motion at the meridional epicyclic frequency, may be directly observable when it occurs in the inner parts of accretion flow around neutron stars and black holes. The high-frequency modulations of the X-ray flux observed in low-mass X-ray binaries at two frequencies (twin kHz QPOs) cou","authors_text":"M. A. Abramowicz, M. Bursa, V. Karas, W. Kluzniak","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2004-06-25T17:33:45Z","title":"The upper kHz QPO: a gravitationally lensed vertical oscillation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0406586","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":"sha256:5999f55eaca87f8bd2b5c29d633f5c5ef5011bea9ee9ac8ff8688cf0752b4827","target":"record","created_at":"2026-05-18T02:40:26Z","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":"462e343a106fce9d5796f86516a3ebd8a7ce9f486f5c02d7d69a6abc2e40bd6d","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2004-06-25T17:33:45Z","title_canon_sha256":"7f8d4fc9adf8c3eb113f3eb97601c67f0ac0730c212c15949d3c603c65ad8abe"},"schema_version":"1.0","source":{"id":"astro-ph/0406586","kind":"arxiv","version":1}},"canonical_sha256":"697fcd8bda7de37dbefe28c0f38ad15def09e71331dfc598774c4ec35f9d5b2a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"697fcd8bda7de37dbefe28c0f38ad15def09e71331dfc598774c4ec35f9d5b2a","first_computed_at":"2026-05-18T02:40:26.348415Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:40:26.348415Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ivkmcSvXDjYN50pXBM9Kf6xzdkqfy78wCa/wizk5j6G47LvI0VdWL4wOGlx6m3T1Z2av/EAKmFiusBDo1cmdCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T02:40:26.348821Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0406586","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5999f55eaca87f8bd2b5c29d633f5c5ef5011bea9ee9ac8ff8688cf0752b4827","sha256:e2f4b56d3f2403fae6b1b115d38f6eba7d04e4daafb7c412e4c921387c88e71f"],"state_sha256":"c190a77f4c47b174690c76e04700916da4186e96d4ceb82c5baf6b1e178a9fad"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"yq3iqKVuEMF8cy58mO5aM70DGwoAsQvAvCU0g3x1eMDVgee7ExyHMU6GT0LQJTKpDCwHFW9BknjEuvqFE3/CCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-07T20:01:24.347414Z","bundle_sha256":"64757b8febe47104ffc666e4734cb996094ac3a1235207f0c800408fa55ba285"}}