{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2001:CPSME5HTSAGQ5A7PFBH7ONDTB5","short_pith_number":"pith:CPSME5HT","schema_version":"1.0","canonical_sha256":"13e4c274f3900d0e83ef284ff734730f612d1d55fad53d9cdf36172a8d09b1d2","source":{"kind":"arxiv","id":"astro-ph/0112374","version":1},"attestation_state":"computed","paper":{"title":"Spiral Structure in WZ Sagittae around the 2001 Outburst Maximum","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"Daisaku Nogami, Hajime Baba, Katsura Matsumoto, Kazuya Ayani, Kozo Sadakane, Makoto Makita, Masayuki Ioroi, Taichi Kato, Yuji Norimoto","submitted_at":"2001-12-16T07:30:04Z","abstract_excerpt":"Intermediate resolution phase-resolved spectra of WZ Sge were obtained on five consecutive nights (July 23 -- 27) covering the initial stage of the 2001 superoutburst. Double-peaked emission lines of He\\textsc{II} at 4686 \\AA, which were absent on July 23, emerged on July 24 together with emission lines of C\\textsc{III} / N\\textsc{III} Bowen blend. Analyses of the He\\textsc{II} emission lines using the Doppler tomography revealed an asymmetric spiral structure on the accretion disk. This finding demonstrates that spiral shocks with a very short orbital period can arise during the initial stage"},"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":"astro-ph/0112374","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2001-12-16T07:30:04Z","cross_cats_sorted":[],"title_canon_sha256":"7b2cda5f740ab580ae11ae533d21f0d25bd3c83cfa570c004e716fd29cacc3a4","abstract_canon_sha256":"24a4ab752d53385b208d51ae26856b3c2e25c91c36433bb502aa186797018513"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:40:43.584568Z","signature_b64":"Zf64r+wwNbl7FwT7CsxVOPRzSAGSr+OlXkwQchs1PWOehdll9khVvHPMJsIxC3RVDZwtvJZHUMHdqsAYromwCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"13e4c274f3900d0e83ef284ff734730f612d1d55fad53d9cdf36172a8d09b1d2","last_reissued_at":"2026-05-18T01:40:43.583849Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:40:43.583849Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Spiral Structure in WZ Sagittae around the 2001 Outburst Maximum","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"Daisaku Nogami, Hajime Baba, Katsura Matsumoto, Kazuya Ayani, Kozo Sadakane, Makoto Makita, Masayuki Ioroi, Taichi Kato, Yuji Norimoto","submitted_at":"2001-12-16T07:30:04Z","abstract_excerpt":"Intermediate resolution phase-resolved spectra of WZ Sge were obtained on five consecutive nights (July 23 -- 27) covering the initial stage of the 2001 superoutburst. Double-peaked emission lines of He\\textsc{II} at 4686 \\AA, which were absent on July 23, emerged on July 24 together with emission lines of C\\textsc{III} / N\\textsc{III} Bowen blend. Analyses of the He\\textsc{II} emission lines using the Doppler tomography revealed an asymmetric spiral structure on the accretion disk. This finding demonstrates that spiral shocks with a very short orbital period can arise during the initial stage"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0112374","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":"astro-ph/0112374","created_at":"2026-05-18T01:40:43.583968+00:00"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0112374v1","created_at":"2026-05-18T01:40:43.583968+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0112374","created_at":"2026-05-18T01:40:43.583968+00:00"},{"alias_kind":"pith_short_12","alias_value":"CPSME5HTSAGQ","created_at":"2026-05-18T12:25:50.254431+00:00"},{"alias_kind":"pith_short_16","alias_value":"CPSME5HTSAGQ5A7P","created_at":"2026-05-18T12:25:50.254431+00:00"},{"alias_kind":"pith_short_8","alias_value":"CPSME5HT","created_at":"2026-05-18T12:25:50.254431+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/CPSME5HTSAGQ5A7PFBH7ONDTB5","json":"https://pith.science/pith/CPSME5HTSAGQ5A7PFBH7ONDTB5.json","graph_json":"https://pith.science/api/pith-number/CPSME5HTSAGQ5A7PFBH7ONDTB5/graph.json","events_json":"https://pith.science/api/pith-number/CPSME5HTSAGQ5A7PFBH7ONDTB5/events.json","paper":"https://pith.science/paper/CPSME5HT"},"agent_actions":{"view_html":"https://pith.science/pith/CPSME5HTSAGQ5A7PFBH7ONDTB5","download_json":"https://pith.science/pith/CPSME5HTSAGQ5A7PFBH7ONDTB5.json","view_paper":"https://pith.science/paper/CPSME5HT","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=astro-ph/0112374&json=true","fetch_graph":"https://pith.science/api/pith-number/CPSME5HTSAGQ5A7PFBH7ONDTB5/graph.json","fetch_events":"https://pith.science/api/pith-number/CPSME5HTSAGQ5A7PFBH7ONDTB5/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/CPSME5HTSAGQ5A7PFBH7ONDTB5/action/timestamp_anchor","attest_storage":"https://pith.science/pith/CPSME5HTSAGQ5A7PFBH7ONDTB5/action/storage_attestation","attest_author":"https://pith.science/pith/CPSME5HTSAGQ5A7PFBH7ONDTB5/action/author_attestation","sign_citation":"https://pith.science/pith/CPSME5HTSAGQ5A7PFBH7ONDTB5/action/citation_signature","submit_replication":"https://pith.science/pith/CPSME5HTSAGQ5A7PFBH7ONDTB5/action/replication_record"}},"created_at":"2026-05-18T01:40:43.583968+00:00","updated_at":"2026-05-18T01:40:43.583968+00:00"}