{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2008:42Y5CFKEFLEAHH6CBDRXCDMTFY","short_pith_number":"pith:42Y5CFKE","schema_version":"1.0","canonical_sha256":"e6b1d115442ac8039fc208e3710d932e2269a5231a0ea86c88da8bcab52ae41d","source":{"kind":"arxiv","id":"0804.4623","version":1},"attestation_state":"computed","paper":{"title":"A Synchronized Variation of the 6.7 GHz Methanol Maser in Cepheus A","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"Akihiro Doi, Hideyuki Kobayashi, Kenta Fujisawa, Koichiro Sugiyama, Mareki Honma, Nanako Mochizuki, Yasuhiro Murata, Yasuko Isono","submitted_at":"2008-04-29T14:27:38Z","abstract_excerpt":"We present the results of daily monitoring of 6.7 GHz methanol maser in Cepheus A (Cep A) using Yamaguchi 32-m radio telescope as well as the results of imaging observations conducted with the JVN (Japanese VLBI Network). We indentified five spectral features, which are grouped into red-shifted (-1.9 and -2.7 km/s) and blue-shifted (-3.8, -4.2, and -4.9 km/s), and we detected rapid variabilities of these maser features within a monitoring period of 81 days. The red-shifted features decreased in flux density to 50% of its initial value, while the flux density of the blue-shifted features rapidl"},"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":"0804.4623","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-04-29T14:27:38Z","cross_cats_sorted":[],"title_canon_sha256":"a1c3a52a20c728d1671233378744b88466e243722744e1b0410ef72af1768563","abstract_canon_sha256":"3d715ed9fcfeaa9fe3d2d557252756f84e3252d3b2de4508e62c36e360e6e826"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:15:53.289162Z","signature_b64":"/BPVCJEF4g7Hxa9As2wU/sq6RR0hb2WtdEchwVrdLPBR3RuRUDRyiXWzbEGVyW8N5l28yUmrjRT7karj2as5Bw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e6b1d115442ac8039fc208e3710d932e2269a5231a0ea86c88da8bcab52ae41d","last_reissued_at":"2026-05-18T02:15:53.288523Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:15:53.288523Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"A Synchronized Variation of the 6.7 GHz Methanol Maser in Cepheus A","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"Akihiro Doi, Hideyuki Kobayashi, Kenta Fujisawa, Koichiro Sugiyama, Mareki Honma, Nanako Mochizuki, Yasuhiro Murata, Yasuko Isono","submitted_at":"2008-04-29T14:27:38Z","abstract_excerpt":"We present the results of daily monitoring of 6.7 GHz methanol maser in Cepheus A (Cep A) using Yamaguchi 32-m radio telescope as well as the results of imaging observations conducted with the JVN (Japanese VLBI Network). We indentified five spectral features, which are grouped into red-shifted (-1.9 and -2.7 km/s) and blue-shifted (-3.8, -4.2, and -4.9 km/s), and we detected rapid variabilities of these maser features within a monitoring period of 81 days. The red-shifted features decreased in flux density to 50% of its initial value, while the flux density of the blue-shifted features rapidl"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0804.4623","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":"0804.4623","created_at":"2026-05-18T02:15:53.288629+00:00"},{"alias_kind":"arxiv_version","alias_value":"0804.4623v1","created_at":"2026-05-18T02:15:53.288629+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0804.4623","created_at":"2026-05-18T02:15:53.288629+00:00"},{"alias_kind":"pith_short_12","alias_value":"42Y5CFKEFLEA","created_at":"2026-05-18T12:25:56.245647+00:00"},{"alias_kind":"pith_short_16","alias_value":"42Y5CFKEFLEAHH6C","created_at":"2026-05-18T12:25:56.245647+00:00"},{"alias_kind":"pith_short_8","alias_value":"42Y5CFKE","created_at":"2026-05-18T12:25:56.245647+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/42Y5CFKEFLEAHH6CBDRXCDMTFY","json":"https://pith.science/pith/42Y5CFKEFLEAHH6CBDRXCDMTFY.json","graph_json":"https://pith.science/api/pith-number/42Y5CFKEFLEAHH6CBDRXCDMTFY/graph.json","events_json":"https://pith.science/api/pith-number/42Y5CFKEFLEAHH6CBDRXCDMTFY/events.json","paper":"https://pith.science/paper/42Y5CFKE"},"agent_actions":{"view_html":"https://pith.science/pith/42Y5CFKEFLEAHH6CBDRXCDMTFY","download_json":"https://pith.science/pith/42Y5CFKEFLEAHH6CBDRXCDMTFY.json","view_paper":"https://pith.science/paper/42Y5CFKE","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=0804.4623&json=true","fetch_graph":"https://pith.science/api/pith-number/42Y5CFKEFLEAHH6CBDRXCDMTFY/graph.json","fetch_events":"https://pith.science/api/pith-number/42Y5CFKEFLEAHH6CBDRXCDMTFY/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/42Y5CFKEFLEAHH6CBDRXCDMTFY/action/timestamp_anchor","attest_storage":"https://pith.science/pith/42Y5CFKEFLEAHH6CBDRXCDMTFY/action/storage_attestation","attest_author":"https://pith.science/pith/42Y5CFKEFLEAHH6CBDRXCDMTFY/action/author_attestation","sign_citation":"https://pith.science/pith/42Y5CFKEFLEAHH6CBDRXCDMTFY/action/citation_signature","submit_replication":"https://pith.science/pith/42Y5CFKEFLEAHH6CBDRXCDMTFY/action/replication_record"}},"created_at":"2026-05-18T02:15:53.288629+00:00","updated_at":"2026-05-18T02:15:53.288629+00:00"}