{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2009:ZW2WG6MLEZTSPMWSU3DXE2QBGY","short_pith_number":"pith:ZW2WG6ML","schema_version":"1.0","canonical_sha256":"cdb563798b266727b2d2a6c7726a01361c4061b42a337a993f597dc039dab527","source":{"kind":"arxiv","id":"0911.1489","version":1},"attestation_state":"computed","paper":{"title":"X-ray emission characteristics of two WR binaries : V444 Cyg and CD Cru","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Brijesh Kumar, Himali Bhatt, J. C. Pandey, K. P. Singh, Ram Sagar","submitted_at":"2009-11-08T06:01:10Z","abstract_excerpt":"We present X-ray analysis of two Wolf-Rayet (WR) binaries: V444 Cyg and CD Cru using the data from observations with XMM-Newton. The X-ray light curves show the phase locked variability in both binaries, where the flux increased by a factor of $\\sim 2$ in the case of V444 Cyg and $\\sim 1.5$ in the case of CD Cru from minimum to maximum. The maximum luminosities in the 0.3--7.5 keV energy band were found to be $5.8\\times10^{32}$ and $2.8\\times10^{32}$ erg s$^{-1}$ for V444 Cyg and CD Cru, respectively. X-ray spectra of these stars confirmed large extinction and revealed hot plasma with prominen"},"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":"0911.1489","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2009-11-08T06:01:10Z","cross_cats_sorted":[],"title_canon_sha256":"a8bf7995a4b8ba97973c5e1ccdd13062568d82a5e92a5bc4f6d4b7ba8d9b2e2b","abstract_canon_sha256":"d6cb474d8bfcb5e477b2ba5c9c8d83db3971352487287e49877cafafe7e593fc"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:10:58.283584Z","signature_b64":"tyW+15QT64e9tXAcuZrhjQJ974evIg5A2wwQJXCJ7H1cvesMI0pwVyzW9wLLP4cjH8ZvXEDleb7NtU36yWbVDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"cdb563798b266727b2d2a6c7726a01361c4061b42a337a993f597dc039dab527","last_reissued_at":"2026-05-18T02:10:58.282900Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:10:58.282900Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"X-ray emission characteristics of two WR binaries : V444 Cyg and CD Cru","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Brijesh Kumar, Himali Bhatt, J. C. Pandey, K. P. Singh, Ram Sagar","submitted_at":"2009-11-08T06:01:10Z","abstract_excerpt":"We present X-ray analysis of two Wolf-Rayet (WR) binaries: V444 Cyg and CD Cru using the data from observations with XMM-Newton. The X-ray light curves show the phase locked variability in both binaries, where the flux increased by a factor of $\\sim 2$ in the case of V444 Cyg and $\\sim 1.5$ in the case of CD Cru from minimum to maximum. The maximum luminosities in the 0.3--7.5 keV energy band were found to be $5.8\\times10^{32}$ and $2.8\\times10^{32}$ erg s$^{-1}$ for V444 Cyg and CD Cru, respectively. X-ray spectra of these stars confirmed large extinction and revealed hot plasma with prominen"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0911.1489","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":"0911.1489","created_at":"2026-05-18T02:10:58.283015+00:00"},{"alias_kind":"arxiv_version","alias_value":"0911.1489v1","created_at":"2026-05-18T02:10:58.283015+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0911.1489","created_at":"2026-05-18T02:10:58.283015+00:00"},{"alias_kind":"pith_short_12","alias_value":"ZW2WG6MLEZTS","created_at":"2026-05-18T12:26:03.138858+00:00"},{"alias_kind":"pith_short_16","alias_value":"ZW2WG6MLEZTSPMWS","created_at":"2026-05-18T12:26:03.138858+00:00"},{"alias_kind":"pith_short_8","alias_value":"ZW2WG6ML","created_at":"2026-05-18T12:26:03.138858+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/ZW2WG6MLEZTSPMWSU3DXE2QBGY","json":"https://pith.science/pith/ZW2WG6MLEZTSPMWSU3DXE2QBGY.json","graph_json":"https://pith.science/api/pith-number/ZW2WG6MLEZTSPMWSU3DXE2QBGY/graph.json","events_json":"https://pith.science/api/pith-number/ZW2WG6MLEZTSPMWSU3DXE2QBGY/events.json","paper":"https://pith.science/paper/ZW2WG6ML"},"agent_actions":{"view_html":"https://pith.science/pith/ZW2WG6MLEZTSPMWSU3DXE2QBGY","download_json":"https://pith.science/pith/ZW2WG6MLEZTSPMWSU3DXE2QBGY.json","view_paper":"https://pith.science/paper/ZW2WG6ML","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=0911.1489&json=true","fetch_graph":"https://pith.science/api/pith-number/ZW2WG6MLEZTSPMWSU3DXE2QBGY/graph.json","fetch_events":"https://pith.science/api/pith-number/ZW2WG6MLEZTSPMWSU3DXE2QBGY/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/ZW2WG6MLEZTSPMWSU3DXE2QBGY/action/timestamp_anchor","attest_storage":"https://pith.science/pith/ZW2WG6MLEZTSPMWSU3DXE2QBGY/action/storage_attestation","attest_author":"https://pith.science/pith/ZW2WG6MLEZTSPMWSU3DXE2QBGY/action/author_attestation","sign_citation":"https://pith.science/pith/ZW2WG6MLEZTSPMWSU3DXE2QBGY/action/citation_signature","submit_replication":"https://pith.science/pith/ZW2WG6MLEZTSPMWSU3DXE2QBGY/action/replication_record"}},"created_at":"2026-05-18T02:10:58.283015+00:00","updated_at":"2026-05-18T02:10:58.283015+00:00"}