{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:UVWR552ZE6JSLGE452C7MAE7R2","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":"704a341006a4301dcd09b8734dd89ac92cee59d6c33e7d1de07741aee8e8587e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2023-04-19T19:25:12Z","title_canon_sha256":"3aaf201c840e8685f8c6ae47355640d297f663202100a4548823bb9c69f9fb9d"},"schema_version":"1.0","source":{"id":"2304.09935","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2304.09935","created_at":"2026-07-05T06:02:52Z"},{"alias_kind":"arxiv_version","alias_value":"2304.09935v1","created_at":"2026-07-05T06:02:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2304.09935","created_at":"2026-07-05T06:02:52Z"},{"alias_kind":"pith_short_12","alias_value":"UVWR552ZE6JS","created_at":"2026-07-05T06:02:52Z"},{"alias_kind":"pith_short_16","alias_value":"UVWR552ZE6JSLGE4","created_at":"2026-07-05T06:02:52Z"},{"alias_kind":"pith_short_8","alias_value":"UVWR552Z","created_at":"2026-07-05T06:02:52Z"}],"graph_snapshots":[{"event_id":"sha256:ced078fae2cbfbd402c07a03d2cfc63318f16b4c1118fd5df021f7010d1425f8","target":"graph","created_at":"2026-07-05T06:02:52Z","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/2304.09935/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We report the discovery of millihertz quasi-periodic oscillations (mHz QPOs) from the neutron star (NS) low-mass X-ray binary 4U 1730--22 using the Neutron Star Interior Composition Explorer (NICER). After being inactive for almost 50 years, 4U 1730--22 went into outburst twice between June and August 2021, and between February and July 2022. We analyse all the NICER observations of this source, and detect mHz QPOs with a significance > $4\\sigma$ in 35 observations. The QPO frequency of the full data set ranged between ~4.5 and ~8.1 mHz with an average fractional rms amplitude of the order of ","authors_text":"A. Sanna, C. Malacaria, D. Altamirano, G. C. Mancuso, G. K. Jaisawal, J. Chenevez, M. Ng, P. Bult, S. Guillot, T. E. Strohmayer, T. Guver","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2023-04-19T19:25:12Z","title":"Detection of millihertz quasi-periodic oscillations in the low-mass X-ray binary 4U 1730--22 with NICER"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2304.09935","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:fb0387f09cb9e65eafa0982af85614d85457473da9a024d3a6e690e33fabc106","target":"record","created_at":"2026-07-05T06:02:52Z","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":"704a341006a4301dcd09b8734dd89ac92cee59d6c33e7d1de07741aee8e8587e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2023-04-19T19:25:12Z","title_canon_sha256":"3aaf201c840e8685f8c6ae47355640d297f663202100a4548823bb9c69f9fb9d"},"schema_version":"1.0","source":{"id":"2304.09935","kind":"arxiv","version":1}},"canonical_sha256":"a56d1ef759279325989cee85f6009f8ea3234c75def99b103bb4ba001a29029b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a56d1ef759279325989cee85f6009f8ea3234c75def99b103bb4ba001a29029b","first_computed_at":"2026-07-05T06:02:52.085880Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T06:02:52.085880Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"6kFiQtV5ykPZ/cBmvZmcNHN07H7t+hGoM1g2Zr63ucf1g1hQvO1MzYVVw3JL01VsjJes7WXKEQ7Nna4mGyBZAQ==","signature_status":"signed_v1","signed_at":"2026-07-05T06:02:52.086301Z","signed_message":"canonical_sha256_bytes"},"source_id":"2304.09935","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:fb0387f09cb9e65eafa0982af85614d85457473da9a024d3a6e690e33fabc106","sha256:ced078fae2cbfbd402c07a03d2cfc63318f16b4c1118fd5df021f7010d1425f8"],"state_sha256":"09f6f22d09f6339f9972b2aa52474df668fd2e7c219a3bf411283828eaab1fbf"}