{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:6UNDDT6YHF5GPJA4RR3BVQZRAH","short_pith_number":"pith:6UNDDT6Y","canonical_record":{"source":{"id":"1209.3792","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-09-17T20:33:54Z","cross_cats_sorted":["astro-ph.IM"],"title_canon_sha256":"fadf5938fe4de0f7952d63b4c1bc781fe8faba7be98cdf8b586fae416d2256a3","abstract_canon_sha256":"e38cc3f72fb563625bee6446cedd03fbde596ffe9ad9476dd6937a5d1705c35b"},"schema_version":"1.0"},"canonical_sha256":"f51a31cfd8397a67a41c8c761ac33101dc3580951b5a9f7aa7dcf78d2a6e6994","source":{"kind":"arxiv","id":"1209.3792","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1209.3792","created_at":"2026-05-18T01:54:27Z"},{"alias_kind":"arxiv_version","alias_value":"1209.3792v2","created_at":"2026-05-18T01:54:27Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1209.3792","created_at":"2026-05-18T01:54:27Z"},{"alias_kind":"pith_short_12","alias_value":"6UNDDT6YHF5G","created_at":"2026-05-18T12:26:56Z"},{"alias_kind":"pith_short_16","alias_value":"6UNDDT6YHF5GPJA4","created_at":"2026-05-18T12:26:56Z"},{"alias_kind":"pith_short_8","alias_value":"6UNDDT6Y","created_at":"2026-05-18T12:26:56Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:6UNDDT6YHF5GPJA4RR3BVQZRAH","target":"record","payload":{"canonical_record":{"source":{"id":"1209.3792","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-09-17T20:33:54Z","cross_cats_sorted":["astro-ph.IM"],"title_canon_sha256":"fadf5938fe4de0f7952d63b4c1bc781fe8faba7be98cdf8b586fae416d2256a3","abstract_canon_sha256":"e38cc3f72fb563625bee6446cedd03fbde596ffe9ad9476dd6937a5d1705c35b"},"schema_version":"1.0"},"canonical_sha256":"f51a31cfd8397a67a41c8c761ac33101dc3580951b5a9f7aa7dcf78d2a6e6994","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:54:27.163224Z","signature_b64":"p5sFRM6/QcijHfYaM9D78V1I8SVSidW4pjR+jKpYD/MgmGIPsjT1hgUZm7zn+wDzFQ3ChQ4WMVBTwsgo3ZMRDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f51a31cfd8397a67a41c8c761ac33101dc3580951b5a9f7aa7dcf78d2a6e6994","last_reissued_at":"2026-05-18T01:54:27.162562Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:54:27.162562Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1209.3792","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:54:27Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"f6BKITsNkV+UT3oiII72r8+nrL8RAsNOMzhq7nVdf3vhjtF3xg12Ghhceoi1YbSsJ7Jhcirt+6KZ6fkAgWuABg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T06:34:10.820009Z"},"content_sha256":"578f095764dc24125706184b9f719b2bb10a75e4f48cfbe7bf8a4484cde0d394","schema_version":"1.0","event_id":"sha256:578f095764dc24125706184b9f719b2bb10a75e4f48cfbe7bf8a4484cde0d394"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:6UNDDT6YHF5GPJA4RR3BVQZRAH","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A new method to detect solar-like oscillations at very low S/N using statistical significance testing","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.IM"],"primary_cat":"astro-ph.SR","authors_text":"Hans Kjeldsen, Mikkel N. Lund, William J. Chaplin","submitted_at":"2012-09-17T20:33:54Z","abstract_excerpt":"We introduce a new method to detect solar-like oscillations in frequency power spectra of stellar observations, under conditions of very low signal to noise. The Moving-Windowed-Power-Search, or MWPS, searches the power spectrum for signatures of excess power, over and above slowly varying (in frequency) background contributions from stellar granulation and shot or instrumental noise. We adopt a false-alarm approach (Chaplin et al. 2011) to ascertain whether flagged excess power, which is consistent with the excess expected from solar-like oscillations, is hard to explain by chance alone (and "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1209.3792","kind":"arxiv","version":2},"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":"2026-05-18T01:54:27Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"GwlCbFo2P9FT3tBE+VO9zV5H9aIBhpfLFOUX1+mmil20Zz3vD0gjPGKW1gD+HfZ/RyK1PpgdF4s0YdzaisMrBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T06:34:10.820380Z"},"content_sha256":"1546cc139d96a8bf28e81d7210749188336687509b48f9352c50c613497d4b39","schema_version":"1.0","event_id":"sha256:1546cc139d96a8bf28e81d7210749188336687509b48f9352c50c613497d4b39"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/6UNDDT6YHF5GPJA4RR3BVQZRAH/bundle.json","state_url":"https://pith.science/pith/6UNDDT6YHF5GPJA4RR3BVQZRAH/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/6UNDDT6YHF5GPJA4RR3BVQZRAH/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":"2026-05-27T06:34:10Z","links":{"resolver":"https://pith.science/pith/6UNDDT6YHF5GPJA4RR3BVQZRAH","bundle":"https://pith.science/pith/6UNDDT6YHF5GPJA4RR3BVQZRAH/bundle.json","state":"https://pith.science/pith/6UNDDT6YHF5GPJA4RR3BVQZRAH/state.json","well_known_bundle":"https://pith.science/.well-known/pith/6UNDDT6YHF5GPJA4RR3BVQZRAH/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:6UNDDT6YHF5GPJA4RR3BVQZRAH","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":"e38cc3f72fb563625bee6446cedd03fbde596ffe9ad9476dd6937a5d1705c35b","cross_cats_sorted":["astro-ph.IM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-09-17T20:33:54Z","title_canon_sha256":"fadf5938fe4de0f7952d63b4c1bc781fe8faba7be98cdf8b586fae416d2256a3"},"schema_version":"1.0","source":{"id":"1209.3792","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1209.3792","created_at":"2026-05-18T01:54:27Z"},{"alias_kind":"arxiv_version","alias_value":"1209.3792v2","created_at":"2026-05-18T01:54:27Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1209.3792","created_at":"2026-05-18T01:54:27Z"},{"alias_kind":"pith_short_12","alias_value":"6UNDDT6YHF5G","created_at":"2026-05-18T12:26:56Z"},{"alias_kind":"pith_short_16","alias_value":"6UNDDT6YHF5GPJA4","created_at":"2026-05-18T12:26:56Z"},{"alias_kind":"pith_short_8","alias_value":"6UNDDT6Y","created_at":"2026-05-18T12:26:56Z"}],"graph_snapshots":[{"event_id":"sha256:1546cc139d96a8bf28e81d7210749188336687509b48f9352c50c613497d4b39","target":"graph","created_at":"2026-05-18T01:54:27Z","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 introduce a new method to detect solar-like oscillations in frequency power spectra of stellar observations, under conditions of very low signal to noise. The Moving-Windowed-Power-Search, or MWPS, searches the power spectrum for signatures of excess power, over and above slowly varying (in frequency) background contributions from stellar granulation and shot or instrumental noise. We adopt a false-alarm approach (Chaplin et al. 2011) to ascertain whether flagged excess power, which is consistent with the excess expected from solar-like oscillations, is hard to explain by chance alone (and ","authors_text":"Hans Kjeldsen, Mikkel N. Lund, William J. Chaplin","cross_cats":["astro-ph.IM"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-09-17T20:33:54Z","title":"A new method to detect solar-like oscillations at very low S/N using statistical significance testing"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1209.3792","kind":"arxiv","version":2},"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":"sha256:578f095764dc24125706184b9f719b2bb10a75e4f48cfbe7bf8a4484cde0d394","target":"record","created_at":"2026-05-18T01:54:27Z","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":"e38cc3f72fb563625bee6446cedd03fbde596ffe9ad9476dd6937a5d1705c35b","cross_cats_sorted":["astro-ph.IM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-09-17T20:33:54Z","title_canon_sha256":"fadf5938fe4de0f7952d63b4c1bc781fe8faba7be98cdf8b586fae416d2256a3"},"schema_version":"1.0","source":{"id":"1209.3792","kind":"arxiv","version":2}},"canonical_sha256":"f51a31cfd8397a67a41c8c761ac33101dc3580951b5a9f7aa7dcf78d2a6e6994","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f51a31cfd8397a67a41c8c761ac33101dc3580951b5a9f7aa7dcf78d2a6e6994","first_computed_at":"2026-05-18T01:54:27.162562Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:54:27.162562Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"p5sFRM6/QcijHfYaM9D78V1I8SVSidW4pjR+jKpYD/MgmGIPsjT1hgUZm7zn+wDzFQ3ChQ4WMVBTwsgo3ZMRDw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:54:27.163224Z","signed_message":"canonical_sha256_bytes"},"source_id":"1209.3792","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:578f095764dc24125706184b9f719b2bb10a75e4f48cfbe7bf8a4484cde0d394","sha256:1546cc139d96a8bf28e81d7210749188336687509b48f9352c50c613497d4b39"],"state_sha256":"a7c5fa12806ecb80dd4d515a40262dc2fd6219cbe05465413e60b96c991494f8"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"JILBFmDcFP8VcR1WBUhRwGE0kgXIW3hQEG4TQsMzWitIOk/y+reBDnUMR012qf6IFKJv2U22SwMPamJ7DIBhBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T06:34:10.822403Z","bundle_sha256":"d90f3ac7272f76b0827a47e56805ec0cbd4b25be7166fec051a23bed232f0c7c"}}