{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:YC4P5R4BAGSIJGRXOHKGOWT7DD","short_pith_number":"pith:YC4P5R4B","canonical_record":{"source":{"id":"1202.0105","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-02-01T06:17:12Z","cross_cats_sorted":[],"title_canon_sha256":"9e777938f22ddf097fccc217c61f4835571394f16b479f1528db8dfe9d8f54ec","abstract_canon_sha256":"50015db50d1153d4ab59990e39495100fefde6a9b7818fa37c0f4e2d4ebeb56c"},"schema_version":"1.0"},"canonical_sha256":"c0b8fec78101a4849a3771d4675a7f18d6da5835fc03117406c4abe9a50e78b2","source":{"kind":"arxiv","id":"1202.0105","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1202.0105","created_at":"2026-05-18T01:58:37Z"},{"alias_kind":"arxiv_version","alias_value":"1202.0105v3","created_at":"2026-05-18T01:58:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1202.0105","created_at":"2026-05-18T01:58:37Z"},{"alias_kind":"pith_short_12","alias_value":"YC4P5R4BAGSI","created_at":"2026-05-18T12:27:27Z"},{"alias_kind":"pith_short_16","alias_value":"YC4P5R4BAGSIJGRX","created_at":"2026-05-18T12:27:27Z"},{"alias_kind":"pith_short_8","alias_value":"YC4P5R4B","created_at":"2026-05-18T12:27:27Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:YC4P5R4BAGSIJGRXOHKGOWT7DD","target":"record","payload":{"canonical_record":{"source":{"id":"1202.0105","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-02-01T06:17:12Z","cross_cats_sorted":[],"title_canon_sha256":"9e777938f22ddf097fccc217c61f4835571394f16b479f1528db8dfe9d8f54ec","abstract_canon_sha256":"50015db50d1153d4ab59990e39495100fefde6a9b7818fa37c0f4e2d4ebeb56c"},"schema_version":"1.0"},"canonical_sha256":"c0b8fec78101a4849a3771d4675a7f18d6da5835fc03117406c4abe9a50e78b2","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:58:37.045660Z","signature_b64":"REVUmPI2z6h1XZSeo6ZDmK3SgXT9nx+5Iy2yq/aXr+JtVCoCd607hbHVNZNo6oDZ+0REI43WuOaqvawb0PdMAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c0b8fec78101a4849a3771d4675a7f18d6da5835fc03117406c4abe9a50e78b2","last_reissued_at":"2026-05-18T01:58:37.044913Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:58:37.044913Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1202.0105","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:58:37Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"XXT8GvodVtfHN4J527B0JMMK5wiAKKcfCAH/Vbos1oyyn9tcRugGPOwl/M0qOSgEP6QtjmJRkaYy4BbIyk0hAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-09T23:15:08.698256Z"},"content_sha256":"838a3a6418655ef415276484b0b21d674d3aa2755917de984d0e550462ec0b33","schema_version":"1.0","event_id":"sha256:838a3a6418655ef415276484b0b21d674d3aa2755917de984d0e550462ec0b33"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:YC4P5R4BAGSIJGRXOHKGOWT7DD","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"FM stars: A Fourier view of pulsating binary stars, a new technique for measuring radial velocities photometrically","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Donald W. Kurtz, Hiromoto Shibahashi","submitted_at":"2012-02-01T06:17:12Z","abstract_excerpt":"Some pulsating stars are good clocks. When they are found in binary stars, the frequencies of their luminosity variations are modulated by the Doppler effect caused by orbital motion. For each pulsation frequency this manifests itself as a multiplet separated by the orbital frequency in the Fourier transform of the light curve of the star. We derive the theoretical relations to exploit data from the Fourier transform to derive all the parameters of a binary system traditionally extracted from spectroscopic radial velocities, including the mass function which is easily derived from the amplitud"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1202.0105","kind":"arxiv","version":3},"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":"2026-05-18T01:58:37Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6FAXeofeRtNbvwQXIQVLkukI6LRyfJV3V0TWYlGARfz23DpM/4sCgaZOAlzWhcAp5jhdTCspZc7dmd2hWsIPDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-09T23:15:08.698709Z"},"content_sha256":"6a79ea0da6bc033e2c34fc1d6b07fa7d236f40994fc11698444501ae7559a4bc","schema_version":"1.0","event_id":"sha256:6a79ea0da6bc033e2c34fc1d6b07fa7d236f40994fc11698444501ae7559a4bc"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/YC4P5R4BAGSIJGRXOHKGOWT7DD/bundle.json","state_url":"https://pith.science/pith/YC4P5R4BAGSIJGRXOHKGOWT7DD/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/YC4P5R4BAGSIJGRXOHKGOWT7DD/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":"2026-08-09T23:15:08Z","links":{"resolver":"https://pith.science/pith/YC4P5R4BAGSIJGRXOHKGOWT7DD","bundle":"https://pith.science/pith/YC4P5R4BAGSIJGRXOHKGOWT7DD/bundle.json","state":"https://pith.science/pith/YC4P5R4BAGSIJGRXOHKGOWT7DD/state.json","well_known_bundle":"https://pith.science/.well-known/pith/YC4P5R4BAGSIJGRXOHKGOWT7DD/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:YC4P5R4BAGSIJGRXOHKGOWT7DD","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":"50015db50d1153d4ab59990e39495100fefde6a9b7818fa37c0f4e2d4ebeb56c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-02-01T06:17:12Z","title_canon_sha256":"9e777938f22ddf097fccc217c61f4835571394f16b479f1528db8dfe9d8f54ec"},"schema_version":"1.0","source":{"id":"1202.0105","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1202.0105","created_at":"2026-05-18T01:58:37Z"},{"alias_kind":"arxiv_version","alias_value":"1202.0105v3","created_at":"2026-05-18T01:58:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1202.0105","created_at":"2026-05-18T01:58:37Z"},{"alias_kind":"pith_short_12","alias_value":"YC4P5R4BAGSI","created_at":"2026-05-18T12:27:27Z"},{"alias_kind":"pith_short_16","alias_value":"YC4P5R4BAGSIJGRX","created_at":"2026-05-18T12:27:27Z"},{"alias_kind":"pith_short_8","alias_value":"YC4P5R4B","created_at":"2026-05-18T12:27:27Z"}],"graph_snapshots":[{"event_id":"sha256:6a79ea0da6bc033e2c34fc1d6b07fa7d236f40994fc11698444501ae7559a4bc","target":"graph","created_at":"2026-05-18T01:58:37Z","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":"Some pulsating stars are good clocks. When they are found in binary stars, the frequencies of their luminosity variations are modulated by the Doppler effect caused by orbital motion. For each pulsation frequency this manifests itself as a multiplet separated by the orbital frequency in the Fourier transform of the light curve of the star. We derive the theoretical relations to exploit data from the Fourier transform to derive all the parameters of a binary system traditionally extracted from spectroscopic radial velocities, including the mass function which is easily derived from the amplitud","authors_text":"Donald W. Kurtz, Hiromoto Shibahashi","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-02-01T06:17:12Z","title":"FM stars: A Fourier view of pulsating binary stars, a new technique for measuring radial velocities photometrically"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1202.0105","kind":"arxiv","version":3},"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":"sha256:838a3a6418655ef415276484b0b21d674d3aa2755917de984d0e550462ec0b33","target":"record","created_at":"2026-05-18T01:58:37Z","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":"50015db50d1153d4ab59990e39495100fefde6a9b7818fa37c0f4e2d4ebeb56c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-02-01T06:17:12Z","title_canon_sha256":"9e777938f22ddf097fccc217c61f4835571394f16b479f1528db8dfe9d8f54ec"},"schema_version":"1.0","source":{"id":"1202.0105","kind":"arxiv","version":3}},"canonical_sha256":"c0b8fec78101a4849a3771d4675a7f18d6da5835fc03117406c4abe9a50e78b2","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c0b8fec78101a4849a3771d4675a7f18d6da5835fc03117406c4abe9a50e78b2","first_computed_at":"2026-05-18T01:58:37.044913Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:58:37.044913Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"REVUmPI2z6h1XZSeo6ZDmK3SgXT9nx+5Iy2yq/aXr+JtVCoCd607hbHVNZNo6oDZ+0REI43WuOaqvawb0PdMAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:58:37.045660Z","signed_message":"canonical_sha256_bytes"},"source_id":"1202.0105","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:838a3a6418655ef415276484b0b21d674d3aa2755917de984d0e550462ec0b33","sha256:6a79ea0da6bc033e2c34fc1d6b07fa7d236f40994fc11698444501ae7559a4bc"],"state_sha256":"3e31add914784f839d52d34849fabbefc50bdc7b54946cd412930b272aedb67e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3YfKRoJDvMor2UXVK4eUz3wdCBoqEeeW3VQfQcIt1GOLCHsPaKpLramVMYrpJLii9Xl1USdEa53taDJE0fy2DQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-09T23:15:08.702222Z","bundle_sha256":"970ab936f7ab46681e1731b9123d6a5efe402329c1fdba849cded1fe3b9fe781"}}