{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2014:UZ6T6BV7GGTPN6NBXLQJTZENEX","short_pith_number":"pith:UZ6T6BV7","schema_version":"1.0","canonical_sha256":"a67d3f06bf31a6f6f9a1bae099e48d25fa72c776e59ebeee772107e891f2d5fa","source":{"kind":"arxiv","id":"1411.4135","version":1},"attestation_state":"computed","paper":{"title":"Discovery of a Quasi-Periodic Oscillation in the Ultraluminous X-ray Source IC 342 X-1: XMM-Newton Results","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"Anuj Nandi, V.K. Agrawal","submitted_at":"2014-11-15T10:55:13Z","abstract_excerpt":"We report the discovery of a quasi-periodic oscillation (QPO) at 642 mHz in an {\\it XMM-Newton} observation of the ultraluminous X-ray source (ULX) IC 342 X-1. The QPO has a centroid at $\\nu_{QPO} = 642 \\pm 20$ mHz, a coherence factor of $ Q = 11.6$, and an amplitude (rms) of 4.1\\% with significance of $3.6\\sigma$. The energy dependence study shows that the QPO is stronger in the energy range 0.3 - 5.0 keV. A subsequent observation (6 days later) does not show any signature of the QPO in the power density spectrum. The broadband energy spectra (0.3 - 40.0 keV) obtained by quasi-simultaneous ob"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1411.4135","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2014-11-15T10:55:13Z","cross_cats_sorted":[],"title_canon_sha256":"1e85cac30193c4ace3ed022aec6502ce9b58373f32b91b7cf059f4603b2d2c06","abstract_canon_sha256":"8da79d2161f588f2c747e7e609334cc9837ae49a7b14162f85cf0cd69297957a"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:35:46.434666Z","signature_b64":"E/kUtRymlfQ61pT9XaPJCqbkZd3c+J4wqXQDugkkwYVdI+FkdUd145JRz+WcJWTrR96KYkQC8oKSzP/rPsI4Dw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a67d3f06bf31a6f6f9a1bae099e48d25fa72c776e59ebeee772107e891f2d5fa","last_reissued_at":"2026-05-18T02:35:46.434111Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:35:46.434111Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Discovery of a Quasi-Periodic Oscillation in the Ultraluminous X-ray Source IC 342 X-1: XMM-Newton Results","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"Anuj Nandi, V.K. Agrawal","submitted_at":"2014-11-15T10:55:13Z","abstract_excerpt":"We report the discovery of a quasi-periodic oscillation (QPO) at 642 mHz in an {\\it XMM-Newton} observation of the ultraluminous X-ray source (ULX) IC 342 X-1. The QPO has a centroid at $\\nu_{QPO} = 642 \\pm 20$ mHz, a coherence factor of $ Q = 11.6$, and an amplitude (rms) of 4.1\\% with significance of $3.6\\sigma$. The energy dependence study shows that the QPO is stronger in the energy range 0.3 - 5.0 keV. A subsequent observation (6 days later) does not show any signature of the QPO in the power density spectrum. The broadband energy spectra (0.3 - 40.0 keV) obtained by quasi-simultaneous ob"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1411.4135","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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1411.4135","created_at":"2026-05-18T02:35:46.434188+00:00"},{"alias_kind":"arxiv_version","alias_value":"1411.4135v1","created_at":"2026-05-18T02:35:46.434188+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1411.4135","created_at":"2026-05-18T02:35:46.434188+00:00"},{"alias_kind":"pith_short_12","alias_value":"UZ6T6BV7GGTP","created_at":"2026-05-18T12:28:52.271510+00:00"},{"alias_kind":"pith_short_16","alias_value":"UZ6T6BV7GGTPN6NB","created_at":"2026-05-18T12:28:52.271510+00:00"},{"alias_kind":"pith_short_8","alias_value":"UZ6T6BV7","created_at":"2026-05-18T12:28:52.271510+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/UZ6T6BV7GGTPN6NBXLQJTZENEX","json":"https://pith.science/pith/UZ6T6BV7GGTPN6NBXLQJTZENEX.json","graph_json":"https://pith.science/api/pith-number/UZ6T6BV7GGTPN6NBXLQJTZENEX/graph.json","events_json":"https://pith.science/api/pith-number/UZ6T6BV7GGTPN6NBXLQJTZENEX/events.json","paper":"https://pith.science/paper/UZ6T6BV7"},"agent_actions":{"view_html":"https://pith.science/pith/UZ6T6BV7GGTPN6NBXLQJTZENEX","download_json":"https://pith.science/pith/UZ6T6BV7GGTPN6NBXLQJTZENEX.json","view_paper":"https://pith.science/paper/UZ6T6BV7","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1411.4135&json=true","fetch_graph":"https://pith.science/api/pith-number/UZ6T6BV7GGTPN6NBXLQJTZENEX/graph.json","fetch_events":"https://pith.science/api/pith-number/UZ6T6BV7GGTPN6NBXLQJTZENEX/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/UZ6T6BV7GGTPN6NBXLQJTZENEX/action/timestamp_anchor","attest_storage":"https://pith.science/pith/UZ6T6BV7GGTPN6NBXLQJTZENEX/action/storage_attestation","attest_author":"https://pith.science/pith/UZ6T6BV7GGTPN6NBXLQJTZENEX/action/author_attestation","sign_citation":"https://pith.science/pith/UZ6T6BV7GGTPN6NBXLQJTZENEX/action/citation_signature","submit_replication":"https://pith.science/pith/UZ6T6BV7GGTPN6NBXLQJTZENEX/action/replication_record"}},"created_at":"2026-05-18T02:35:46.434188+00:00","updated_at":"2026-05-18T02:35:46.434188+00:00"}