{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2024:NKOEFWF2OIEOOXPBLJTTQN2URD","short_pith_number":"pith:NKOEFWF2","canonical_record":{"source":{"id":"2401.17557","kind":"arxiv","version":4},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.SR","submitted_at":"2024-01-31T02:46:03Z","cross_cats_sorted":["astro-ph.EP"],"title_canon_sha256":"ee9374726871aec0a3c1274bdc81e8ed13a2ea77c91ba56ec9d5b01899b79ed7","abstract_canon_sha256":"208fbec4b13c82a741be3bd2cbc888b620bef9814ed13f6b19c14279095b5991"},"schema_version":"1.0"},"canonical_sha256":"6a9c42d8ba7208e75de15a6738375488c43699715c23280aed5ed5e12b981db9","source":{"kind":"arxiv","id":"2401.17557","version":4},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2401.17557","created_at":"2026-07-05T08:08:20Z"},{"alias_kind":"arxiv_version","alias_value":"2401.17557v4","created_at":"2026-07-05T08:08:20Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2401.17557","created_at":"2026-07-05T08:08:20Z"},{"alias_kind":"pith_short_12","alias_value":"NKOEFWF2OIEO","created_at":"2026-07-05T08:08:20Z"},{"alias_kind":"pith_short_16","alias_value":"NKOEFWF2OIEOOXPB","created_at":"2026-07-05T08:08:20Z"},{"alias_kind":"pith_short_8","alias_value":"NKOEFWF2","created_at":"2026-07-05T08:08:20Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2024:NKOEFWF2OIEOOXPBLJTTQN2URD","target":"record","payload":{"canonical_record":{"source":{"id":"2401.17557","kind":"arxiv","version":4},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.SR","submitted_at":"2024-01-31T02:46:03Z","cross_cats_sorted":["astro-ph.EP"],"title_canon_sha256":"ee9374726871aec0a3c1274bdc81e8ed13a2ea77c91ba56ec9d5b01899b79ed7","abstract_canon_sha256":"208fbec4b13c82a741be3bd2cbc888b620bef9814ed13f6b19c14279095b5991"},"schema_version":"1.0"},"canonical_sha256":"6a9c42d8ba7208e75de15a6738375488c43699715c23280aed5ed5e12b981db9","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T08:08:20.608436Z","signature_b64":"Tr5/6wzKa60JVc7wPRWrDl/GMVseQmM+c1fG/eniX1TDL3sWa+J/P2vAcua4pclh2CFLxTpz8x5NQt1vJIk5DA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6a9c42d8ba7208e75de15a6738375488c43699715c23280aed5ed5e12b981db9","last_reissued_at":"2026-07-05T08:08:20.607951Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T08:08:20.607951Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2401.17557","source_version":4,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T08:08:20Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1jCvb/ibEa7Xpp6QophZYrIL3IxgfqWQcfHsiqtfT3zJ7If1xefeav11ptVK07CKH6O/903++/Ib44uRwV/MBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-11T02:16:42.101215Z"},"content_sha256":"78e9cb6c3dec6d0f93b434ade9949ae416e6e5818ab3fec792da7c62e9f88be2","schema_version":"1.0","event_id":"sha256:78e9cb6c3dec6d0f93b434ade9949ae416e6e5818ab3fec792da7c62e9f88be2"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2024:NKOEFWF2OIEOOXPBLJTTQN2URD","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A simple method to measure numax for asteroseismology: application to 16,000 oscillating Kepler red giants","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["astro-ph.EP"],"primary_cat":"astro-ph.SR","authors_text":"Courtney L. Crawford, Daniel Huber, Dennis Stello, Jie Yu, K. R. Sreenivas, Timothy R. Bedding, Yaguang Li","submitted_at":"2024-01-31T02:46:03Z","abstract_excerpt":"The importance of numax (the frequency of maximum oscillation power) for asteroseismology has been demonstrated widely in the previous decade, especially for red giants. With the large amount of photometric data from CoRoT, Kepler and TESS, several automated algorithms to retrieve numax values have been introduced. Most of these algorithms correct the granulation background in the power spectrum by fitting a model and subtracting it before measuring numax. We have developed a method that does not require fitting to the granulation background. Instead, we simply divide the power spectrum by a f"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2401.17557","kind":"arxiv","version":4},"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/2401.17557/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":"2026-07-05T08:08:20Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6yF7CHvTYoDfoDMwBAHrAGjWSfk2AkBshMc14GfEI+Y4hZi9GZxb0NbHkw790MO2hCPiVu3p4PIEwFS6avInCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-11T02:16:42.102108Z"},"content_sha256":"b5a79946b53c816e4fcceeddc4314d524b10c843eec294f8b5625263af24590b","schema_version":"1.0","event_id":"sha256:b5a79946b53c816e4fcceeddc4314d524b10c843eec294f8b5625263af24590b"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/NKOEFWF2OIEOOXPBLJTTQN2URD/bundle.json","state_url":"https://pith.science/pith/NKOEFWF2OIEOOXPBLJTTQN2URD/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/NKOEFWF2OIEOOXPBLJTTQN2URD/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":"2026-08-11T02:16:42Z","links":{"resolver":"https://pith.science/pith/NKOEFWF2OIEOOXPBLJTTQN2URD","bundle":"https://pith.science/pith/NKOEFWF2OIEOOXPBLJTTQN2URD/bundle.json","state":"https://pith.science/pith/NKOEFWF2OIEOOXPBLJTTQN2URD/state.json","well_known_bundle":"https://pith.science/.well-known/pith/NKOEFWF2OIEOOXPBLJTTQN2URD/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2024:NKOEFWF2OIEOOXPBLJTTQN2URD","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":"208fbec4b13c82a741be3bd2cbc888b620bef9814ed13f6b19c14279095b5991","cross_cats_sorted":["astro-ph.EP"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.SR","submitted_at":"2024-01-31T02:46:03Z","title_canon_sha256":"ee9374726871aec0a3c1274bdc81e8ed13a2ea77c91ba56ec9d5b01899b79ed7"},"schema_version":"1.0","source":{"id":"2401.17557","kind":"arxiv","version":4}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2401.17557","created_at":"2026-07-05T08:08:20Z"},{"alias_kind":"arxiv_version","alias_value":"2401.17557v4","created_at":"2026-07-05T08:08:20Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2401.17557","created_at":"2026-07-05T08:08:20Z"},{"alias_kind":"pith_short_12","alias_value":"NKOEFWF2OIEO","created_at":"2026-07-05T08:08:20Z"},{"alias_kind":"pith_short_16","alias_value":"NKOEFWF2OIEOOXPB","created_at":"2026-07-05T08:08:20Z"},{"alias_kind":"pith_short_8","alias_value":"NKOEFWF2","created_at":"2026-07-05T08:08:20Z"}],"graph_snapshots":[{"event_id":"sha256:b5a79946b53c816e4fcceeddc4314d524b10c843eec294f8b5625263af24590b","target":"graph","created_at":"2026-07-05T08:08:20Z","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/2401.17557/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The importance of numax (the frequency of maximum oscillation power) for asteroseismology has been demonstrated widely in the previous decade, especially for red giants. With the large amount of photometric data from CoRoT, Kepler and TESS, several automated algorithms to retrieve numax values have been introduced. Most of these algorithms correct the granulation background in the power spectrum by fitting a model and subtracting it before measuring numax. We have developed a method that does not require fitting to the granulation background. Instead, we simply divide the power spectrum by a f","authors_text":"Courtney L. Crawford, Daniel Huber, Dennis Stello, Jie Yu, K. R. Sreenivas, Timothy R. Bedding, Yaguang Li","cross_cats":["astro-ph.EP"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.SR","submitted_at":"2024-01-31T02:46:03Z","title":"A simple method to measure numax for asteroseismology: application to 16,000 oscillating Kepler red giants"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2401.17557","kind":"arxiv","version":4},"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":"sha256:78e9cb6c3dec6d0f93b434ade9949ae416e6e5818ab3fec792da7c62e9f88be2","target":"record","created_at":"2026-07-05T08:08:20Z","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":"208fbec4b13c82a741be3bd2cbc888b620bef9814ed13f6b19c14279095b5991","cross_cats_sorted":["astro-ph.EP"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.SR","submitted_at":"2024-01-31T02:46:03Z","title_canon_sha256":"ee9374726871aec0a3c1274bdc81e8ed13a2ea77c91ba56ec9d5b01899b79ed7"},"schema_version":"1.0","source":{"id":"2401.17557","kind":"arxiv","version":4}},"canonical_sha256":"6a9c42d8ba7208e75de15a6738375488c43699715c23280aed5ed5e12b981db9","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6a9c42d8ba7208e75de15a6738375488c43699715c23280aed5ed5e12b981db9","first_computed_at":"2026-07-05T08:08:20.607951Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T08:08:20.607951Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Tr5/6wzKa60JVc7wPRWrDl/GMVseQmM+c1fG/eniX1TDL3sWa+J/P2vAcua4pclh2CFLxTpz8x5NQt1vJIk5DA==","signature_status":"signed_v1","signed_at":"2026-07-05T08:08:20.608436Z","signed_message":"canonical_sha256_bytes"},"source_id":"2401.17557","source_kind":"arxiv","source_version":4}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:78e9cb6c3dec6d0f93b434ade9949ae416e6e5818ab3fec792da7c62e9f88be2","sha256:b5a79946b53c816e4fcceeddc4314d524b10c843eec294f8b5625263af24590b"],"state_sha256":"77f794290d0bb540e377d35c6da10a0df50d42451c6b5fdc3fe2d31ddc3421ef"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"lZbLCVn5jp7fO/5gYhnPN0EqAvOkfW/f0xfXiTxTSb4nzaLCVsgFWmmT5dUeULON0xSHbT1agtJFCYIzkmUBCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-11T02:16:42.110287Z","bundle_sha256":"ec2b29aa28abc542c22b1eba2259bd942847d67a037f6cd806a3c6449f1b2df0"}}