{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:Y4GUIWOOO4DAWQWWCOUJB7GETO","short_pith_number":"pith:Y4GUIWOO","canonical_record":{"source":{"id":"2106.14409","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2021-06-28T05:52:15Z","cross_cats_sorted":[],"title_canon_sha256":"0ede48e935e67b17c8a64049007d9b5b6a7322cf954c2c3fccc124441c886968","abstract_canon_sha256":"b4f8bc938993704ef6b4d34237ad09d81fd689850e16d05e933c6e81330c7721"},"schema_version":"1.0"},"canonical_sha256":"c70d4459ce77060b42d613a890fcc49bb0a2dfbf280c722e1ee1c2c228af46f0","source":{"kind":"arxiv","id":"2106.14409","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2106.14409","created_at":"2026-07-05T03:17:53Z"},{"alias_kind":"arxiv_version","alias_value":"2106.14409v1","created_at":"2026-07-05T03:17:53Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2106.14409","created_at":"2026-07-05T03:17:53Z"},{"alias_kind":"pith_short_12","alias_value":"Y4GUIWOOO4DA","created_at":"2026-07-05T03:17:53Z"},{"alias_kind":"pith_short_16","alias_value":"Y4GUIWOOO4DAWQWW","created_at":"2026-07-05T03:17:53Z"},{"alias_kind":"pith_short_8","alias_value":"Y4GUIWOO","created_at":"2026-07-05T03:17:53Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:Y4GUIWOOO4DAWQWWCOUJB7GETO","target":"record","payload":{"canonical_record":{"source":{"id":"2106.14409","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2021-06-28T05:52:15Z","cross_cats_sorted":[],"title_canon_sha256":"0ede48e935e67b17c8a64049007d9b5b6a7322cf954c2c3fccc124441c886968","abstract_canon_sha256":"b4f8bc938993704ef6b4d34237ad09d81fd689850e16d05e933c6e81330c7721"},"schema_version":"1.0"},"canonical_sha256":"c70d4459ce77060b42d613a890fcc49bb0a2dfbf280c722e1ee1c2c228af46f0","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T03:17:53.433673Z","signature_b64":"x+/hD2JJL46fqj1cd8rY58bZUFwRbtvE83tsi6rHZSQ8LBQakoThD/0KGCHl6Nwov32v3exruPdd20w4JRNADg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c70d4459ce77060b42d613a890fcc49bb0a2dfbf280c722e1ee1c2c228af46f0","last_reissued_at":"2026-07-05T03:17:53.433171Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T03:17:53.433171Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2106.14409","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":"2026-07-05T03:17:53Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"jfjwBKPiGC9a2UQqi6mKWcQd35ZtDNzayJOOQHBcM+VgCacCKjjt0KZG5filSb+DoJBUpY1z3tH2RiO8vE8ODA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-10T10:22:39.783398Z"},"content_sha256":"ff191dd8bb2f49a7aab96741508bd8c0c92b72d5ffdf2a3a9f1276e1c8d56aa4","schema_version":"1.0","event_id":"sha256:ff191dd8bb2f49a7aab96741508bd8c0c92b72d5ffdf2a3a9f1276e1c8d56aa4"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:Y4GUIWOOO4DAWQWWCOUJB7GETO","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Massive compact disks around FU Orionis-type young eruptive stars revealed by ALMA","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"\\'A. K\\'osp\\'al, E. I. Vorobyov, F. Cruz-S\\'aenz de Miera, H. B. Liu, J. A. White, J. D. Green, J. Hashimoto, L. Chen, M. Hogerheijde, M. M. Dunham, M. Takami, O. Feh\\'er, P. \\'Abrah\\'am, R. Dong, T. Csengeri, Th. Henning, T. Kudo","submitted_at":"2021-06-28T05:52:15Z","abstract_excerpt":"FU Orionis-type objects (FUors) are low-mass pre-main sequence stars undergoing a temporary, but significant increase of mass accretion rate from the circumstellar disk onto the protostar. It is not yet clear what triggers the accretion bursts and whether the disks of FUors are in any way different from disks of non-bursting young stellar objects. Motivated by this, we conducted a 1.3 mm continuum survey of ten FUors and FUor-like objects with ALMA, using both the 7 m array and the 12 m array in two different configurations to recover emission at the widest possible range of spatial scales. We"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2106.14409","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2106.14409/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-05T03:17:53Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ZRV9gv4RswHlVXoAWGcv98TmXs4hdcewiZb1xX6EMBO/PUUXfKZYTUWZuAtm20JSCgFYuHRvp626lyv7Rmz1AQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-10T10:22:39.783772Z"},"content_sha256":"ca00d85697804f069f73d956a81bde6c798e99888dbb828d08515807bdf63824","schema_version":"1.0","event_id":"sha256:ca00d85697804f069f73d956a81bde6c798e99888dbb828d08515807bdf63824"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/Y4GUIWOOO4DAWQWWCOUJB7GETO/bundle.json","state_url":"https://pith.science/pith/Y4GUIWOOO4DAWQWWCOUJB7GETO/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/Y4GUIWOOO4DAWQWWCOUJB7GETO/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":"2026-07-10T10:22:39Z","links":{"resolver":"https://pith.science/pith/Y4GUIWOOO4DAWQWWCOUJB7GETO","bundle":"https://pith.science/pith/Y4GUIWOOO4DAWQWWCOUJB7GETO/bundle.json","state":"https://pith.science/pith/Y4GUIWOOO4DAWQWWCOUJB7GETO/state.json","well_known_bundle":"https://pith.science/.well-known/pith/Y4GUIWOOO4DAWQWWCOUJB7GETO/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:Y4GUIWOOO4DAWQWWCOUJB7GETO","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":"b4f8bc938993704ef6b4d34237ad09d81fd689850e16d05e933c6e81330c7721","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2021-06-28T05:52:15Z","title_canon_sha256":"0ede48e935e67b17c8a64049007d9b5b6a7322cf954c2c3fccc124441c886968"},"schema_version":"1.0","source":{"id":"2106.14409","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2106.14409","created_at":"2026-07-05T03:17:53Z"},{"alias_kind":"arxiv_version","alias_value":"2106.14409v1","created_at":"2026-07-05T03:17:53Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2106.14409","created_at":"2026-07-05T03:17:53Z"},{"alias_kind":"pith_short_12","alias_value":"Y4GUIWOOO4DA","created_at":"2026-07-05T03:17:53Z"},{"alias_kind":"pith_short_16","alias_value":"Y4GUIWOOO4DAWQWW","created_at":"2026-07-05T03:17:53Z"},{"alias_kind":"pith_short_8","alias_value":"Y4GUIWOO","created_at":"2026-07-05T03:17:53Z"}],"graph_snapshots":[{"event_id":"sha256:ca00d85697804f069f73d956a81bde6c798e99888dbb828d08515807bdf63824","target":"graph","created_at":"2026-07-05T03:17:53Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2106.14409/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"FU Orionis-type objects (FUors) are low-mass pre-main sequence stars undergoing a temporary, but significant increase of mass accretion rate from the circumstellar disk onto the protostar. It is not yet clear what triggers the accretion bursts and whether the disks of FUors are in any way different from disks of non-bursting young stellar objects. Motivated by this, we conducted a 1.3 mm continuum survey of ten FUors and FUor-like objects with ALMA, using both the 7 m array and the 12 m array in two different configurations to recover emission at the widest possible range of spatial scales. We","authors_text":"\\'A. K\\'osp\\'al, E. I. Vorobyov, F. Cruz-S\\'aenz de Miera, H. B. Liu, J. A. White, J. D. Green, J. Hashimoto, L. Chen, M. Hogerheijde, M. M. Dunham, M. Takami, O. Feh\\'er, P. \\'Abrah\\'am, R. Dong, T. Csengeri, Th. Henning, T. Kudo","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2021-06-28T05:52:15Z","title":"Massive compact disks around FU Orionis-type young eruptive stars revealed by ALMA"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2106.14409","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:ff191dd8bb2f49a7aab96741508bd8c0c92b72d5ffdf2a3a9f1276e1c8d56aa4","target":"record","created_at":"2026-07-05T03:17:53Z","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":"b4f8bc938993704ef6b4d34237ad09d81fd689850e16d05e933c6e81330c7721","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2021-06-28T05:52:15Z","title_canon_sha256":"0ede48e935e67b17c8a64049007d9b5b6a7322cf954c2c3fccc124441c886968"},"schema_version":"1.0","source":{"id":"2106.14409","kind":"arxiv","version":1}},"canonical_sha256":"c70d4459ce77060b42d613a890fcc49bb0a2dfbf280c722e1ee1c2c228af46f0","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c70d4459ce77060b42d613a890fcc49bb0a2dfbf280c722e1ee1c2c228af46f0","first_computed_at":"2026-07-05T03:17:53.433171Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T03:17:53.433171Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"x+/hD2JJL46fqj1cd8rY58bZUFwRbtvE83tsi6rHZSQ8LBQakoThD/0KGCHl6Nwov32v3exruPdd20w4JRNADg==","signature_status":"signed_v1","signed_at":"2026-07-05T03:17:53.433673Z","signed_message":"canonical_sha256_bytes"},"source_id":"2106.14409","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ff191dd8bb2f49a7aab96741508bd8c0c92b72d5ffdf2a3a9f1276e1c8d56aa4","sha256:ca00d85697804f069f73d956a81bde6c798e99888dbb828d08515807bdf63824"],"state_sha256":"1ac2e1226e474e8c5a2515b4d04a86bacc0d226abf7f826237b5edeac51a4369"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"SipQqkfXIUF1TsAedjT++oyRWIdimalaOgogOUUHxTimR7JqsRIZcRxq1UttNI0KWDhNBUZX6eEBgcE8glppBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-10T10:22:39.785929Z","bundle_sha256":"fd9de8d553d30387e85aff8cd8afc2a259a15d52f51f6115db787a341f92260d"}}