{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:V5AIZ5RQCFBVIFU3FOY2FJO64L","short_pith_number":"pith:V5AIZ5RQ","canonical_record":{"source":{"id":"1412.2272","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2014-12-06T20:09:01Z","cross_cats_sorted":[],"title_canon_sha256":"2e74455519f141737765dfbcec0ef9449b3d48643c70e30018ad60caf78e7741","abstract_canon_sha256":"0a4e9d96de0890abd82a1eba2e8e6a291da9f5402fb54cda0aece243e718c471"},"schema_version":"1.0"},"canonical_sha256":"af408cf630114354169b2bb1a2a5dee2e1b5dcffd32f7cc2c669207abcc26892","source":{"kind":"arxiv","id":"1412.2272","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1412.2272","created_at":"2026-05-18T01:41:21Z"},{"alias_kind":"arxiv_version","alias_value":"1412.2272v1","created_at":"2026-05-18T01:41:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1412.2272","created_at":"2026-05-18T01:41:21Z"},{"alias_kind":"pith_short_12","alias_value":"V5AIZ5RQCFBV","created_at":"2026-05-18T12:28:52Z"},{"alias_kind":"pith_short_16","alias_value":"V5AIZ5RQCFBVIFU3","created_at":"2026-05-18T12:28:52Z"},{"alias_kind":"pith_short_8","alias_value":"V5AIZ5RQ","created_at":"2026-05-18T12:28:52Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:V5AIZ5RQCFBVIFU3FOY2FJO64L","target":"record","payload":{"canonical_record":{"source":{"id":"1412.2272","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2014-12-06T20:09:01Z","cross_cats_sorted":[],"title_canon_sha256":"2e74455519f141737765dfbcec0ef9449b3d48643c70e30018ad60caf78e7741","abstract_canon_sha256":"0a4e9d96de0890abd82a1eba2e8e6a291da9f5402fb54cda0aece243e718c471"},"schema_version":"1.0"},"canonical_sha256":"af408cf630114354169b2bb1a2a5dee2e1b5dcffd32f7cc2c669207abcc26892","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:41:21.145371Z","signature_b64":"UUQ3NLgpG6kTC/o6hIe5h7xlCVJrR+n1OFTC/gAngAcurpW8RL5AiBcNIc2HOofJWJx0SMAVTcQ0ds6er561Bg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"af408cf630114354169b2bb1a2a5dee2e1b5dcffd32f7cc2c669207abcc26892","last_reissued_at":"2026-05-18T01:41:21.144864Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:41:21.144864Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1412.2272","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":"2026-05-18T01:41:21Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"mFEJyknK28KL+IGnBIQZh5ekIHXp4f2Rewfq9t6MMKu85xo3NaQ+niNxSHla7IIPBPca/cAkwRcEXdTbi5giAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-20T22:26:54.050091Z"},"content_sha256":"2ea918d386f28cd8840d0b4de537e1dd8f2d4c05241fe549f544f4b6501fc106","schema_version":"1.0","event_id":"sha256:2ea918d386f28cd8840d0b4de537e1dd8f2d4c05241fe549f544f4b6501fc106"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:V5AIZ5RQCFBVIFU3FOY2FJO64L","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Kepler photometry of RRc stars: peculiar double-mode pulsations and period doubling","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"C.-C. Ngeow, D. W. Kurtz, E. Guggenberger, G. Kopacki, J. M. Benk\\H{o}, J. M. Nemec, K. Kolenberg, L. Moln\\'ar, M. Chadid, P. Moskalik, R. Smolec, R. Szab\\'o, S. M. Kanbur, Y.-B. Jeon","submitted_at":"2014-12-06T20:09:01Z","abstract_excerpt":"We present the analysis of four first overtone RR Lyrae stars observed with the Kepler space telescope, based on data obtained over nearly 2.5yr. All four stars are found to be multiperiodic. The strongest secondary mode with frequency f_2 has an amplitude of a few mmag, 20 - 45 times lower than the main radial mode with frequency f_1. The two oscillations have a period ratio of P_2/P_1 = 0.612 - 0.632 that cannot be reproduced by any two radial modes. Thus, the secondary mode is nonradial. Modes yielding similar period ratios have also recently been discovered in other variables of the RRc an"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1412.2272","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":"2026-05-18T01:41:21Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"mnH1vLazzW96f6AvF7WDKlA9MX9YCOpjdleLlCrRl7WhsNKxA/JxiucHsl7eeUN6GT1652HPevjEUG+f01+cDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-20T22:26:54.050470Z"},"content_sha256":"9f5c85e11950699893f7ae97a43b83a21fd5e8d07942524a0bd5924876a5a31e","schema_version":"1.0","event_id":"sha256:9f5c85e11950699893f7ae97a43b83a21fd5e8d07942524a0bd5924876a5a31e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/V5AIZ5RQCFBVIFU3FOY2FJO64L/bundle.json","state_url":"https://pith.science/pith/V5AIZ5RQCFBVIFU3FOY2FJO64L/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/V5AIZ5RQCFBVIFU3FOY2FJO64L/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":"2026-06-20T22:26:54Z","links":{"resolver":"https://pith.science/pith/V5AIZ5RQCFBVIFU3FOY2FJO64L","bundle":"https://pith.science/pith/V5AIZ5RQCFBVIFU3FOY2FJO64L/bundle.json","state":"https://pith.science/pith/V5AIZ5RQCFBVIFU3FOY2FJO64L/state.json","well_known_bundle":"https://pith.science/.well-known/pith/V5AIZ5RQCFBVIFU3FOY2FJO64L/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:V5AIZ5RQCFBVIFU3FOY2FJO64L","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":"0a4e9d96de0890abd82a1eba2e8e6a291da9f5402fb54cda0aece243e718c471","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2014-12-06T20:09:01Z","title_canon_sha256":"2e74455519f141737765dfbcec0ef9449b3d48643c70e30018ad60caf78e7741"},"schema_version":"1.0","source":{"id":"1412.2272","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1412.2272","created_at":"2026-05-18T01:41:21Z"},{"alias_kind":"arxiv_version","alias_value":"1412.2272v1","created_at":"2026-05-18T01:41:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1412.2272","created_at":"2026-05-18T01:41:21Z"},{"alias_kind":"pith_short_12","alias_value":"V5AIZ5RQCFBV","created_at":"2026-05-18T12:28:52Z"},{"alias_kind":"pith_short_16","alias_value":"V5AIZ5RQCFBVIFU3","created_at":"2026-05-18T12:28:52Z"},{"alias_kind":"pith_short_8","alias_value":"V5AIZ5RQ","created_at":"2026-05-18T12:28:52Z"}],"graph_snapshots":[{"event_id":"sha256:9f5c85e11950699893f7ae97a43b83a21fd5e8d07942524a0bd5924876a5a31e","target":"graph","created_at":"2026-05-18T01:41:21Z","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 present the analysis of four first overtone RR Lyrae stars observed with the Kepler space telescope, based on data obtained over nearly 2.5yr. All four stars are found to be multiperiodic. The strongest secondary mode with frequency f_2 has an amplitude of a few mmag, 20 - 45 times lower than the main radial mode with frequency f_1. The two oscillations have a period ratio of P_2/P_1 = 0.612 - 0.632 that cannot be reproduced by any two radial modes. Thus, the secondary mode is nonradial. Modes yielding similar period ratios have also recently been discovered in other variables of the RRc an","authors_text":"C.-C. Ngeow, D. W. Kurtz, E. Guggenberger, G. Kopacki, J. M. Benk\\H{o}, J. M. Nemec, K. Kolenberg, L. Moln\\'ar, M. Chadid, P. Moskalik, R. Smolec, R. Szab\\'o, S. M. Kanbur, Y.-B. Jeon","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2014-12-06T20:09:01Z","title":"Kepler photometry of RRc stars: peculiar double-mode pulsations and period doubling"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1412.2272","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":"sha256:2ea918d386f28cd8840d0b4de537e1dd8f2d4c05241fe549f544f4b6501fc106","target":"record","created_at":"2026-05-18T01:41:21Z","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":"0a4e9d96de0890abd82a1eba2e8e6a291da9f5402fb54cda0aece243e718c471","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2014-12-06T20:09:01Z","title_canon_sha256":"2e74455519f141737765dfbcec0ef9449b3d48643c70e30018ad60caf78e7741"},"schema_version":"1.0","source":{"id":"1412.2272","kind":"arxiv","version":1}},"canonical_sha256":"af408cf630114354169b2bb1a2a5dee2e1b5dcffd32f7cc2c669207abcc26892","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"af408cf630114354169b2bb1a2a5dee2e1b5dcffd32f7cc2c669207abcc26892","first_computed_at":"2026-05-18T01:41:21.144864Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:41:21.144864Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"UUQ3NLgpG6kTC/o6hIe5h7xlCVJrR+n1OFTC/gAngAcurpW8RL5AiBcNIc2HOofJWJx0SMAVTcQ0ds6er561Bg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:41:21.145371Z","signed_message":"canonical_sha256_bytes"},"source_id":"1412.2272","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2ea918d386f28cd8840d0b4de537e1dd8f2d4c05241fe549f544f4b6501fc106","sha256:9f5c85e11950699893f7ae97a43b83a21fd5e8d07942524a0bd5924876a5a31e"],"state_sha256":"62b680cab4b6e20236d3cf98bddc9b631975bc25050378b466f03af2f01cb578"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"tIAnsP8xW8N7g7ppBg+fw/YmSCee5Yq+hRAH0jvMIPhXfrrzP24/I+6A7MxZbhLJtcuZ3aMygUSI9zB2h6YWCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-20T22:26:54.052409Z","bundle_sha256":"e255d2ba5ef2010c66aaa01743cff381cd52b3aec28793509c17c2dadec25f41"}}