{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:Z23JNFNHJYQG4IZI7LPFO564VM","short_pith_number":"pith:Z23JNFNH","canonical_record":{"source":{"id":"2102.05905","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.EP","submitted_at":"2021-02-11T09:29:17Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"7b32fd42691d1a9d45c5a31f95b5ee7099b29126d9e2d9bd6a0dd52f3840dfcc","abstract_canon_sha256":"6cd1262ba1f86f8b10e9548799c730071c7348876273be3d593897a4032571f5"},"schema_version":"1.0"},"canonical_sha256":"ceb69695a74e206e2328fade5777dcab1e1ddbb4d6ec8e68d9c728e162d26abc","source":{"kind":"arxiv","id":"2102.05905","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2102.05905","created_at":"2026-07-05T02:31:52Z"},{"alias_kind":"arxiv_version","alias_value":"2102.05905v1","created_at":"2026-07-05T02:31:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2102.05905","created_at":"2026-07-05T02:31:52Z"},{"alias_kind":"pith_short_12","alias_value":"Z23JNFNHJYQG","created_at":"2026-07-05T02:31:52Z"},{"alias_kind":"pith_short_16","alias_value":"Z23JNFNHJYQG4IZI","created_at":"2026-07-05T02:31:52Z"},{"alias_kind":"pith_short_8","alias_value":"Z23JNFNH","created_at":"2026-07-05T02:31:52Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:Z23JNFNHJYQG4IZI7LPFO564VM","target":"record","payload":{"canonical_record":{"source":{"id":"2102.05905","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.EP","submitted_at":"2021-02-11T09:29:17Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"7b32fd42691d1a9d45c5a31f95b5ee7099b29126d9e2d9bd6a0dd52f3840dfcc","abstract_canon_sha256":"6cd1262ba1f86f8b10e9548799c730071c7348876273be3d593897a4032571f5"},"schema_version":"1.0"},"canonical_sha256":"ceb69695a74e206e2328fade5777dcab1e1ddbb4d6ec8e68d9c728e162d26abc","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T02:31:52.246923Z","signature_b64":"I+C45myqwRrNQgrNQYzaaKgs/ON+B8oA4k1rPc3XwHiOfwSGOBlolhukvwZ441KZfKaXlD7CUAypkAt87C+rAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ceb69695a74e206e2328fade5777dcab1e1ddbb4d6ec8e68d9c728e162d26abc","last_reissued_at":"2026-07-05T02:31:52.246428Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T02:31:52.246428Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2102.05905","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":"2026-07-05T02:31:52Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"oaNKN9O/LKTOrnLnUuOG+26minT+rQ1xSbcznbbQcXJ9UfB7qpwPY6rRMdQmD4M4qhzebY9qMEMutgM6JXz2AA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-10T11:16:20.556564Z"},"content_sha256":"d6885cac6ffdd2c9bcfcee2becac897d6d300177ec03e8a9750dff5b131e0b95","schema_version":"1.0","event_id":"sha256:d6885cac6ffdd2c9bcfcee2becac897d6d300177ec03e8a9750dff5b131e0b95"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:Z23JNFNHJYQG4IZI7LPFO564VM","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"ALMA Observations of the Asymmetric Dust Disk around DM Tau","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.EP","authors_text":"Hauyu Baobab Liu, Jun Hashimoto, Logan Francis, Nienke van der Marel, Ruobing Dong, Takashi Tsukagoshi, Takayuki Muto, Yasuhiro Hasegawa","submitted_at":"2021-02-11T09:29:17Z","abstract_excerpt":"We report an analysis of the dust disk around DM~Tau, newly observed with the Atacama Large Millimeter/submillimeter Array (ALMA) at 1.3 mm. The ALMA observations with high sensitivity (8.4~$\\mu$Jy/beam) and high angular resolution (35~mas, 5.1~au) detect two asymmetries on the ring at $r\\sim$20~au. They could be two vortices in early evolution, the destruction of a large scale vortex, or double continuum emission peaks with different dust sizes. We also found millimeter emissions with $\\sim$50~$\\mu$Jy (a lower limit dust mass of 0.3~$M_{\\rm Moon}$) inside the 3-au ring. To characterize these "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2102.05905","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/2102.05905/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":"2026-07-05T02:31:52Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"mbJgVzLttCmysL6HCb0/t1fW7c4dgEEreHOCKxu0pk/sM0oEc0vsLeRkeZRmzvuyNZGVy2mFqm+CnTK7AIKrDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-10T11:16:20.557066Z"},"content_sha256":"489390ca469875d56a3ca9c665375b781bce63bba155f56b87976ed477d9811e","schema_version":"1.0","event_id":"sha256:489390ca469875d56a3ca9c665375b781bce63bba155f56b87976ed477d9811e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/Z23JNFNHJYQG4IZI7LPFO564VM/bundle.json","state_url":"https://pith.science/pith/Z23JNFNHJYQG4IZI7LPFO564VM/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/Z23JNFNHJYQG4IZI7LPFO564VM/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":"2026-08-10T11:16:20Z","links":{"resolver":"https://pith.science/pith/Z23JNFNHJYQG4IZI7LPFO564VM","bundle":"https://pith.science/pith/Z23JNFNHJYQG4IZI7LPFO564VM/bundle.json","state":"https://pith.science/pith/Z23JNFNHJYQG4IZI7LPFO564VM/state.json","well_known_bundle":"https://pith.science/.well-known/pith/Z23JNFNHJYQG4IZI7LPFO564VM/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:Z23JNFNHJYQG4IZI7LPFO564VM","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":"6cd1262ba1f86f8b10e9548799c730071c7348876273be3d593897a4032571f5","cross_cats_sorted":["astro-ph.SR"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.EP","submitted_at":"2021-02-11T09:29:17Z","title_canon_sha256":"7b32fd42691d1a9d45c5a31f95b5ee7099b29126d9e2d9bd6a0dd52f3840dfcc"},"schema_version":"1.0","source":{"id":"2102.05905","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2102.05905","created_at":"2026-07-05T02:31:52Z"},{"alias_kind":"arxiv_version","alias_value":"2102.05905v1","created_at":"2026-07-05T02:31:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2102.05905","created_at":"2026-07-05T02:31:52Z"},{"alias_kind":"pith_short_12","alias_value":"Z23JNFNHJYQG","created_at":"2026-07-05T02:31:52Z"},{"alias_kind":"pith_short_16","alias_value":"Z23JNFNHJYQG4IZI","created_at":"2026-07-05T02:31:52Z"},{"alias_kind":"pith_short_8","alias_value":"Z23JNFNH","created_at":"2026-07-05T02:31:52Z"}],"graph_snapshots":[{"event_id":"sha256:489390ca469875d56a3ca9c665375b781bce63bba155f56b87976ed477d9811e","target":"graph","created_at":"2026-07-05T02:31:52Z","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/2102.05905/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We report an analysis of the dust disk around DM~Tau, newly observed with the Atacama Large Millimeter/submillimeter Array (ALMA) at 1.3 mm. The ALMA observations with high sensitivity (8.4~$\\mu$Jy/beam) and high angular resolution (35~mas, 5.1~au) detect two asymmetries on the ring at $r\\sim$20~au. They could be two vortices in early evolution, the destruction of a large scale vortex, or double continuum emission peaks with different dust sizes. We also found millimeter emissions with $\\sim$50~$\\mu$Jy (a lower limit dust mass of 0.3~$M_{\\rm Moon}$) inside the 3-au ring. To characterize these ","authors_text":"Hauyu Baobab Liu, Jun Hashimoto, Logan Francis, Nienke van der Marel, Ruobing Dong, Takashi Tsukagoshi, Takayuki Muto, Yasuhiro Hasegawa","cross_cats":["astro-ph.SR"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.EP","submitted_at":"2021-02-11T09:29:17Z","title":"ALMA Observations of the Asymmetric Dust Disk around DM Tau"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2102.05905","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:d6885cac6ffdd2c9bcfcee2becac897d6d300177ec03e8a9750dff5b131e0b95","target":"record","created_at":"2026-07-05T02:31:52Z","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":"6cd1262ba1f86f8b10e9548799c730071c7348876273be3d593897a4032571f5","cross_cats_sorted":["astro-ph.SR"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.EP","submitted_at":"2021-02-11T09:29:17Z","title_canon_sha256":"7b32fd42691d1a9d45c5a31f95b5ee7099b29126d9e2d9bd6a0dd52f3840dfcc"},"schema_version":"1.0","source":{"id":"2102.05905","kind":"arxiv","version":1}},"canonical_sha256":"ceb69695a74e206e2328fade5777dcab1e1ddbb4d6ec8e68d9c728e162d26abc","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ceb69695a74e206e2328fade5777dcab1e1ddbb4d6ec8e68d9c728e162d26abc","first_computed_at":"2026-07-05T02:31:52.246428Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T02:31:52.246428Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"I+C45myqwRrNQgrNQYzaaKgs/ON+B8oA4k1rPc3XwHiOfwSGOBlolhukvwZ441KZfKaXlD7CUAypkAt87C+rAw==","signature_status":"signed_v1","signed_at":"2026-07-05T02:31:52.246923Z","signed_message":"canonical_sha256_bytes"},"source_id":"2102.05905","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d6885cac6ffdd2c9bcfcee2becac897d6d300177ec03e8a9750dff5b131e0b95","sha256:489390ca469875d56a3ca9c665375b781bce63bba155f56b87976ed477d9811e"],"state_sha256":"067f424ef157cafe52f25f34e26a138e8f85b6a220fe077368809d75aea0157c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"IztVnaNo8lApIWBm18uhHjn8iC4rL/pwPQgWNWLNSrflxNeuwAdaRkDFnTpg68dgmHEvfK0j2HXg2nwbkrwmDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-10T11:16:20.560862Z","bundle_sha256":"caec1da075fb8d580b3266ea948aa478c484648c9c27ef69f03506939d448586"}}