{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:KWROT3EMBQ2TFJNTPUL7XOZ5NM","short_pith_number":"pith:KWROT3EM","canonical_record":{"source":{"id":"2009.07181","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2020-09-15T15:45:12Z","cross_cats_sorted":[],"title_canon_sha256":"f3478835b445e1f2363d16185f088a1eb721da63d2fbd8278a9841dcdb22abeb","abstract_canon_sha256":"80d62d8368232f0cafda73bfa2d020f50bc40487fad2b890310ff21e88ea644e"},"schema_version":"1.0"},"canonical_sha256":"55a2e9ec8c0c3532a5b37d17fbbb3d6b3533fcb4fa229e8ab3159ce0de133c85","source":{"kind":"arxiv","id":"2009.07181","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2009.07181","created_at":"2026-07-05T01:39:16Z"},{"alias_kind":"arxiv_version","alias_value":"2009.07181v1","created_at":"2026-07-05T01:39:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2009.07181","created_at":"2026-07-05T01:39:16Z"},{"alias_kind":"pith_short_12","alias_value":"KWROT3EMBQ2T","created_at":"2026-07-05T01:39:16Z"},{"alias_kind":"pith_short_16","alias_value":"KWROT3EMBQ2TFJNT","created_at":"2026-07-05T01:39:16Z"},{"alias_kind":"pith_short_8","alias_value":"KWROT3EM","created_at":"2026-07-05T01:39:16Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:KWROT3EMBQ2TFJNTPUL7XOZ5NM","target":"record","payload":{"canonical_record":{"source":{"id":"2009.07181","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2020-09-15T15:45:12Z","cross_cats_sorted":[],"title_canon_sha256":"f3478835b445e1f2363d16185f088a1eb721da63d2fbd8278a9841dcdb22abeb","abstract_canon_sha256":"80d62d8368232f0cafda73bfa2d020f50bc40487fad2b890310ff21e88ea644e"},"schema_version":"1.0"},"canonical_sha256":"55a2e9ec8c0c3532a5b37d17fbbb3d6b3533fcb4fa229e8ab3159ce0de133c85","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:39:16.405049Z","signature_b64":"4FHXMv4PdyxFlkW16XCU6Dvn0dU8rC16LFUCR7Ll+3gt+Ja0owt+eAuuAHu8URNb6B0rOVvWVFrj7xDRZ3bGDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"55a2e9ec8c0c3532a5b37d17fbbb3d6b3533fcb4fa229e8ab3159ce0de133c85","last_reissued_at":"2026-07-05T01:39:16.404621Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:39:16.404621Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2009.07181","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":"2026-07-05T01:39:16Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"D9QhHhk1c6JLZvh7RgMt4tSQ5MVTxNyMRj8qM44q1Rnd3FAtsNCojocbC9V/WrEsYE6zH6VL9ZC6sGn01+zIDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-10T19:41:55.365152Z"},"content_sha256":"c7f073b1a6d64af02bbde8d301c624b2b2cdb08772319eba3ffa8c0374dcaee8","schema_version":"1.0","event_id":"sha256:c7f073b1a6d64af02bbde8d301c624b2b2cdb08772319eba3ffa8c0374dcaee8"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:KWROT3EMBQ2TFJNTPUL7XOZ5NM","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Modeling of 35-day superorbital cycle of $B$ and $V$ light curves of IMXB HZ Her/Her X-1","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"A. Schwope, D. A. Kolesnikov, D. Klochkov, E. Irtuganov, E. M. Trunkovsky, G. Sch\\\"onherr, I. F. Bikmaev, I. M. Volkov, I. V. Nikolenko, J. Wilms, K. A. Postnov, N. I. Shakura, P. Yu. Golyshev, R. Staubert, S. Yu. Shugarov, T. R. Irsmambetova","submitted_at":"2020-09-15T15:45:12Z","abstract_excerpt":"The X-ray binary Her X-1 consists of an accreting neutron star and the optical component HZ Her. The 35-day X-ray superorbital variability of this system is known since its discovery in 1972 by the Uhuru satellite and is believed to be caused by forced precession of a warped accretion disk tilted to the orbital plane. We argue that the observed features of the 35-day optical variability of HZ Her can be explained by free precession of the neutron star with a period close to that of the forced disk. The model parameters include a) the X-ray luminosity of the neutron star; b) the optical flux fr"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2009.07181","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/2009.07181/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":"2026-07-05T01:39:16Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ah17LLmvs/KUWpSU66p5i2DZLYXxJGqJUnMcnBmDEQX33XoTABb2vxXWbQb8NbpwXyW4pilAaPda5FBXxtueDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-10T19:41:55.365786Z"},"content_sha256":"d9152b5fc21420525a77ad4d4ac690df9325f935d9401beb7478c42b0f32c630","schema_version":"1.0","event_id":"sha256:d9152b5fc21420525a77ad4d4ac690df9325f935d9401beb7478c42b0f32c630"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/KWROT3EMBQ2TFJNTPUL7XOZ5NM/bundle.json","state_url":"https://pith.science/pith/KWROT3EMBQ2TFJNTPUL7XOZ5NM/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/KWROT3EMBQ2TFJNTPUL7XOZ5NM/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":"2026-08-10T19:41:55Z","links":{"resolver":"https://pith.science/pith/KWROT3EMBQ2TFJNTPUL7XOZ5NM","bundle":"https://pith.science/pith/KWROT3EMBQ2TFJNTPUL7XOZ5NM/bundle.json","state":"https://pith.science/pith/KWROT3EMBQ2TFJNTPUL7XOZ5NM/state.json","well_known_bundle":"https://pith.science/.well-known/pith/KWROT3EMBQ2TFJNTPUL7XOZ5NM/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:KWROT3EMBQ2TFJNTPUL7XOZ5NM","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":"80d62d8368232f0cafda73bfa2d020f50bc40487fad2b890310ff21e88ea644e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2020-09-15T15:45:12Z","title_canon_sha256":"f3478835b445e1f2363d16185f088a1eb721da63d2fbd8278a9841dcdb22abeb"},"schema_version":"1.0","source":{"id":"2009.07181","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2009.07181","created_at":"2026-07-05T01:39:16Z"},{"alias_kind":"arxiv_version","alias_value":"2009.07181v1","created_at":"2026-07-05T01:39:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2009.07181","created_at":"2026-07-05T01:39:16Z"},{"alias_kind":"pith_short_12","alias_value":"KWROT3EMBQ2T","created_at":"2026-07-05T01:39:16Z"},{"alias_kind":"pith_short_16","alias_value":"KWROT3EMBQ2TFJNT","created_at":"2026-07-05T01:39:16Z"},{"alias_kind":"pith_short_8","alias_value":"KWROT3EM","created_at":"2026-07-05T01:39:16Z"}],"graph_snapshots":[{"event_id":"sha256:d9152b5fc21420525a77ad4d4ac690df9325f935d9401beb7478c42b0f32c630","target":"graph","created_at":"2026-07-05T01:39:16Z","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/2009.07181/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The X-ray binary Her X-1 consists of an accreting neutron star and the optical component HZ Her. The 35-day X-ray superorbital variability of this system is known since its discovery in 1972 by the Uhuru satellite and is believed to be caused by forced precession of a warped accretion disk tilted to the orbital plane. We argue that the observed features of the 35-day optical variability of HZ Her can be explained by free precession of the neutron star with a period close to that of the forced disk. The model parameters include a) the X-ray luminosity of the neutron star; b) the optical flux fr","authors_text":"A. Schwope, D. A. Kolesnikov, D. Klochkov, E. Irtuganov, E. M. Trunkovsky, G. Sch\\\"onherr, I. F. Bikmaev, I. M. Volkov, I. V. Nikolenko, J. Wilms, K. A. Postnov, N. I. Shakura, P. Yu. Golyshev, R. Staubert, S. Yu. Shugarov, T. R. Irsmambetova","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2020-09-15T15:45:12Z","title":"Modeling of 35-day superorbital cycle of $B$ and $V$ light curves of IMXB HZ Her/Her X-1"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2009.07181","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:c7f073b1a6d64af02bbde8d301c624b2b2cdb08772319eba3ffa8c0374dcaee8","target":"record","created_at":"2026-07-05T01:39:16Z","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":"80d62d8368232f0cafda73bfa2d020f50bc40487fad2b890310ff21e88ea644e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2020-09-15T15:45:12Z","title_canon_sha256":"f3478835b445e1f2363d16185f088a1eb721da63d2fbd8278a9841dcdb22abeb"},"schema_version":"1.0","source":{"id":"2009.07181","kind":"arxiv","version":1}},"canonical_sha256":"55a2e9ec8c0c3532a5b37d17fbbb3d6b3533fcb4fa229e8ab3159ce0de133c85","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"55a2e9ec8c0c3532a5b37d17fbbb3d6b3533fcb4fa229e8ab3159ce0de133c85","first_computed_at":"2026-07-05T01:39:16.404621Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:39:16.404621Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"4FHXMv4PdyxFlkW16XCU6Dvn0dU8rC16LFUCR7Ll+3gt+Ja0owt+eAuuAHu8URNb6B0rOVvWVFrj7xDRZ3bGDw==","signature_status":"signed_v1","signed_at":"2026-07-05T01:39:16.405049Z","signed_message":"canonical_sha256_bytes"},"source_id":"2009.07181","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c7f073b1a6d64af02bbde8d301c624b2b2cdb08772319eba3ffa8c0374dcaee8","sha256:d9152b5fc21420525a77ad4d4ac690df9325f935d9401beb7478c42b0f32c630"],"state_sha256":"293fba253f3cf513a2b7570e1a4510eee489666131f6f7f234a482ac82e9a1c5"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9ebQusdg/I3wteNlxkAMmus99GYBjWjIKfqzsMCt/MF6hRnBavGSJLP7epR3JVKvtjX4kdrpacBxKwHGzu73DA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-10T19:41:55.373305Z","bundle_sha256":"638deeb893a5ccd4d90e18e4a3513c90e902f670d6ac6f7abd1ce2010a473c62"}}