{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:JYGSZKBZF5GGNB5DTFB7KFFQUB","short_pith_number":"pith:JYGSZKBZ","canonical_record":{"source":{"id":"1703.02839","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2017-03-08T14:05:16Z","cross_cats_sorted":[],"title_canon_sha256":"20b489b976c4a40aac0c3849e964f95ab9908f86d0912e4845c593c3b1020f53","abstract_canon_sha256":"2bd7de78decc62d8ea8182125fc4a14c8f2319575cbc90f545d56a3603cef143"},"schema_version":"1.0"},"canonical_sha256":"4e0d2ca8392f4c6687a39943f514b0a04deca4157da0cfda45c560145829ca34","source":{"kind":"arxiv","id":"1703.02839","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1703.02839","created_at":"2026-05-18T00:43:53Z"},{"alias_kind":"arxiv_version","alias_value":"1703.02839v1","created_at":"2026-05-18T00:43:53Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1703.02839","created_at":"2026-05-18T00:43:53Z"},{"alias_kind":"pith_short_12","alias_value":"JYGSZKBZF5GG","created_at":"2026-05-18T12:31:24Z"},{"alias_kind":"pith_short_16","alias_value":"JYGSZKBZF5GGNB5D","created_at":"2026-05-18T12:31:24Z"},{"alias_kind":"pith_short_8","alias_value":"JYGSZKBZ","created_at":"2026-05-18T12:31:24Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:JYGSZKBZF5GGNB5DTFB7KFFQUB","target":"record","payload":{"canonical_record":{"source":{"id":"1703.02839","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2017-03-08T14:05:16Z","cross_cats_sorted":[],"title_canon_sha256":"20b489b976c4a40aac0c3849e964f95ab9908f86d0912e4845c593c3b1020f53","abstract_canon_sha256":"2bd7de78decc62d8ea8182125fc4a14c8f2319575cbc90f545d56a3603cef143"},"schema_version":"1.0"},"canonical_sha256":"4e0d2ca8392f4c6687a39943f514b0a04deca4157da0cfda45c560145829ca34","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:43:53.809534Z","signature_b64":"2LjiWQtga7WKF+6cC0dJOHJvvuy4A3VrxuBDrSpj3g1LKV0oIgocAqysrGnaF5DbT3DkezpTIOBJEBxdjatzAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"4e0d2ca8392f4c6687a39943f514b0a04deca4157da0cfda45c560145829ca34","last_reissued_at":"2026-05-18T00:43:53.808914Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:43:53.808914Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1703.02839","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:43:53Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"z6Mo7dPggaFSRgAG95HNjga07WTevDmI/zP/g6P43Ts+Km+EQ9z8imAJsLNG2h246Bzr+JL5ug7kooXpLzzXAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T23:04:13.362754Z"},"content_sha256":"729362405d98b2513057e93620566f5783922b06cc26c40b6ed2f0cdfe3ebff1","schema_version":"1.0","event_id":"sha256:729362405d98b2513057e93620566f5783922b06cc26c40b6ed2f0cdfe3ebff1"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:JYGSZKBZF5GGNB5DTFB7KFFQUB","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"VLTI/PIONIER images the Achernar disk swell","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"A. C. Carciofi, A. Domiciano De Souza, D. Moser Faes, F. Millour, G. Dalla Vedova, P. Kervella, R. G. Petrov, T. Rivinius","submitted_at":"2017-03-08T14:05:16Z","abstract_excerpt":"Context. The mechanism of disk formation around fast-rotating Be stars is not well understood. In particular, it is not clear which mechanisms operate, in addition to fast rotation, to produce the observed variable ejection of matter. The star Achernar is a privileged laboratory to probe these additional mechanisms because it is close, presents B-Be phase variations on timescales ranging from 6 yr to 15 yr, a companion star was discovered around it, and probably presents a polar wind or jet. Aims. Despite all these previous studies, the disk around Achernar was never directly imaged. Therefore"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1703.02839","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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:43:53Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"7cee2zKuPLNsrHlmPD7rvJUm5hOdtybA4a7mjQEFWN/Ql8feGZ1zp/nUWCUM21jKHlNsrwv1yLuRPfcat0plCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T23:04:13.363155Z"},"content_sha256":"f6efb015f8e766c41c678d086f79db4f370150c0daa9b7b20c0980c66043bec4","schema_version":"1.0","event_id":"sha256:f6efb015f8e766c41c678d086f79db4f370150c0daa9b7b20c0980c66043bec4"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/JYGSZKBZF5GGNB5DTFB7KFFQUB/bundle.json","state_url":"https://pith.science/pith/JYGSZKBZF5GGNB5DTFB7KFFQUB/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/JYGSZKBZF5GGNB5DTFB7KFFQUB/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-05-31T23:04:13Z","links":{"resolver":"https://pith.science/pith/JYGSZKBZF5GGNB5DTFB7KFFQUB","bundle":"https://pith.science/pith/JYGSZKBZF5GGNB5DTFB7KFFQUB/bundle.json","state":"https://pith.science/pith/JYGSZKBZF5GGNB5DTFB7KFFQUB/state.json","well_known_bundle":"https://pith.science/.well-known/pith/JYGSZKBZF5GGNB5DTFB7KFFQUB/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:JYGSZKBZF5GGNB5DTFB7KFFQUB","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":"2bd7de78decc62d8ea8182125fc4a14c8f2319575cbc90f545d56a3603cef143","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2017-03-08T14:05:16Z","title_canon_sha256":"20b489b976c4a40aac0c3849e964f95ab9908f86d0912e4845c593c3b1020f53"},"schema_version":"1.0","source":{"id":"1703.02839","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1703.02839","created_at":"2026-05-18T00:43:53Z"},{"alias_kind":"arxiv_version","alias_value":"1703.02839v1","created_at":"2026-05-18T00:43:53Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1703.02839","created_at":"2026-05-18T00:43:53Z"},{"alias_kind":"pith_short_12","alias_value":"JYGSZKBZF5GG","created_at":"2026-05-18T12:31:24Z"},{"alias_kind":"pith_short_16","alias_value":"JYGSZKBZF5GGNB5D","created_at":"2026-05-18T12:31:24Z"},{"alias_kind":"pith_short_8","alias_value":"JYGSZKBZ","created_at":"2026-05-18T12:31:24Z"}],"graph_snapshots":[{"event_id":"sha256:f6efb015f8e766c41c678d086f79db4f370150c0daa9b7b20c0980c66043bec4","target":"graph","created_at":"2026-05-18T00:43:53Z","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"},"paper":{"abstract_excerpt":"Context. The mechanism of disk formation around fast-rotating Be stars is not well understood. In particular, it is not clear which mechanisms operate, in addition to fast rotation, to produce the observed variable ejection of matter. The star Achernar is a privileged laboratory to probe these additional mechanisms because it is close, presents B-Be phase variations on timescales ranging from 6 yr to 15 yr, a companion star was discovered around it, and probably presents a polar wind or jet. Aims. Despite all these previous studies, the disk around Achernar was never directly imaged. Therefore","authors_text":"A. C. Carciofi, A. Domiciano De Souza, D. Moser Faes, F. Millour, G. Dalla Vedova, P. Kervella, R. G. Petrov, T. Rivinius","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2017-03-08T14:05:16Z","title":"VLTI/PIONIER images the Achernar disk swell"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1703.02839","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":"sha256:729362405d98b2513057e93620566f5783922b06cc26c40b6ed2f0cdfe3ebff1","target":"record","created_at":"2026-05-18T00:43:53Z","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":"2bd7de78decc62d8ea8182125fc4a14c8f2319575cbc90f545d56a3603cef143","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2017-03-08T14:05:16Z","title_canon_sha256":"20b489b976c4a40aac0c3849e964f95ab9908f86d0912e4845c593c3b1020f53"},"schema_version":"1.0","source":{"id":"1703.02839","kind":"arxiv","version":1}},"canonical_sha256":"4e0d2ca8392f4c6687a39943f514b0a04deca4157da0cfda45c560145829ca34","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"4e0d2ca8392f4c6687a39943f514b0a04deca4157da0cfda45c560145829ca34","first_computed_at":"2026-05-18T00:43:53.808914Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:43:53.808914Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"2LjiWQtga7WKF+6cC0dJOHJvvuy4A3VrxuBDrSpj3g1LKV0oIgocAqysrGnaF5DbT3DkezpTIOBJEBxdjatzAA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:43:53.809534Z","signed_message":"canonical_sha256_bytes"},"source_id":"1703.02839","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:729362405d98b2513057e93620566f5783922b06cc26c40b6ed2f0cdfe3ebff1","sha256:f6efb015f8e766c41c678d086f79db4f370150c0daa9b7b20c0980c66043bec4"],"state_sha256":"c9c0de29c1bb561d8f8f764ab4a3f7b464afeda2332e37c36fdf6e2b22cfce18"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2IaBLr0YwgOiYvu3rQ2NFxq/Rjs1fbAluUm4RwCqEQV/PcUwaSzt6hAkUnKyyBPYRtOkLVLX3EOx8hoQZ9n0Cg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-31T23:04:13.366379Z","bundle_sha256":"b79f7af4bb627867516064b0e89457cf3aae931ae5bc044a04b0b375ddac5bb1"}}