{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:IQJDXOHOQXACXNNRDDTCIUWLYD","short_pith_number":"pith:IQJDXOHO","canonical_record":{"source":{"id":"2509.03767","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.SR","submitted_at":"2025-09-03T23:23:10Z","cross_cats_sorted":["astro-ph.EP"],"title_canon_sha256":"0675625c8592fa9ce2f5e0dbc235ffe6fb60cf6dbe9248b0dbc76c3a3d6fb4dc","abstract_canon_sha256":"99480bd641c744626e45991a9cfba04dac248a2760273af86ad825b269aae890"},"schema_version":"1.0"},"canonical_sha256":"44123bb8ee85c02bb5b118e62452cbc0edb528f6f1cff552bcd27eabb7f353e8","source":{"kind":"arxiv","id":"2509.03767","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2509.03767","created_at":"2026-07-05T12:04:45Z"},{"alias_kind":"arxiv_version","alias_value":"2509.03767v1","created_at":"2026-07-05T12:04:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2509.03767","created_at":"2026-07-05T12:04:45Z"},{"alias_kind":"pith_short_12","alias_value":"IQJDXOHOQXAC","created_at":"2026-07-05T12:04:45Z"},{"alias_kind":"pith_short_16","alias_value":"IQJDXOHOQXACXNNR","created_at":"2026-07-05T12:04:45Z"},{"alias_kind":"pith_short_8","alias_value":"IQJDXOHO","created_at":"2026-07-05T12:04:45Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:IQJDXOHOQXACXNNRDDTCIUWLYD","target":"record","payload":{"canonical_record":{"source":{"id":"2509.03767","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.SR","submitted_at":"2025-09-03T23:23:10Z","cross_cats_sorted":["astro-ph.EP"],"title_canon_sha256":"0675625c8592fa9ce2f5e0dbc235ffe6fb60cf6dbe9248b0dbc76c3a3d6fb4dc","abstract_canon_sha256":"99480bd641c744626e45991a9cfba04dac248a2760273af86ad825b269aae890"},"schema_version":"1.0"},"canonical_sha256":"44123bb8ee85c02bb5b118e62452cbc0edb528f6f1cff552bcd27eabb7f353e8","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T12:04:45.560347Z","signature_b64":"c6pAYUKUyybp0/d8duTOHJvUv6ueesFI5fXp3ie47TDV5u98Vw6t4yeR72xRhZA0kURyQ5eZGZZ2UytAgiaZBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"44123bb8ee85c02bb5b118e62452cbc0edb528f6f1cff552bcd27eabb7f353e8","last_reissued_at":"2026-07-05T12:04:45.559776Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T12:04:45.559776Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2509.03767","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":"2026-07-05T12:04:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"otgBsD29fdxRSQRq2USe0/VPHPmzOmbMwWPPlR77zG+gGsziCWf/KIeUFOuNyq1THKhD8d5tq08JpEnLSksdAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-21T21:51:23.488981Z"},"content_sha256":"78c156335d26a85ae3fe911c68ebdd615e8b5d9bed32c0b63dc43d3fe5f63950","schema_version":"1.0","event_id":"sha256:78c156335d26a85ae3fe911c68ebdd615e8b5d9bed32c0b63dc43d3fe5f63950"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:IQJDXOHOQXACXNNRDDTCIUWLYD","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The ODYSSEUS Survey. Using accretion and stellar rotation to reveal the star-disk connection in T Tauri stars","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["astro-ph.EP"],"primary_cat":"astro-ph.SR","authors_text":"\\'Agnes K\\'osp\\'al, Caeley V. Pittman, C. C. Espaillat, Connor E. Robinson, Nuria Calvet, Thanawuth Thanathibodee, Zhaohuan Zhu","submitted_at":"2025-09-03T23:23:10Z","abstract_excerpt":"Classical T Tauri stars (CTTS) exhibit strong variability over timescales of minutes to decades. However, much theoretical work assumes that CTTS are in stable spin states. Here, we test expectations for CTTS angular momentum regulation by comparing star and disk rotation. We measure stellar rotation periods and disk corotation radii ($R_{\\rm co}$) for 47 CTTS from the HST ULLYSES sample. We compare $R_{\\rm co}$ to the magnetospheric truncation radii ($R_{\\rm i}$) and show that most CTTS are in the spin-up regime based on model predictions, which may indicate efficient angular momentum loss pr"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2509.03767","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/2509.03767/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":"2026-07-05T12:04:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"JXfA8RL4c6AHSsnvmgzxtsK4y7xhjYKCE8TXPi9CRt+9nv4Heqln5YdEM9snZVwf2u2eA82VFANLukveViKXAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-21T21:51:23.489537Z"},"content_sha256":"91776711fedb83d0bca2175274896268c187e65087665ecaf754199a70936afc","schema_version":"1.0","event_id":"sha256:91776711fedb83d0bca2175274896268c187e65087665ecaf754199a70936afc"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/IQJDXOHOQXACXNNRDDTCIUWLYD/bundle.json","state_url":"https://pith.science/pith/IQJDXOHOQXACXNNRDDTCIUWLYD/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/IQJDXOHOQXACXNNRDDTCIUWLYD/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":"2026-08-21T21:51:23Z","links":{"resolver":"https://pith.science/pith/IQJDXOHOQXACXNNRDDTCIUWLYD","bundle":"https://pith.science/pith/IQJDXOHOQXACXNNRDDTCIUWLYD/bundle.json","state":"https://pith.science/pith/IQJDXOHOQXACXNNRDDTCIUWLYD/state.json","well_known_bundle":"https://pith.science/.well-known/pith/IQJDXOHOQXACXNNRDDTCIUWLYD/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:IQJDXOHOQXACXNNRDDTCIUWLYD","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":"99480bd641c744626e45991a9cfba04dac248a2760273af86ad825b269aae890","cross_cats_sorted":["astro-ph.EP"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.SR","submitted_at":"2025-09-03T23:23:10Z","title_canon_sha256":"0675625c8592fa9ce2f5e0dbc235ffe6fb60cf6dbe9248b0dbc76c3a3d6fb4dc"},"schema_version":"1.0","source":{"id":"2509.03767","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2509.03767","created_at":"2026-07-05T12:04:45Z"},{"alias_kind":"arxiv_version","alias_value":"2509.03767v1","created_at":"2026-07-05T12:04:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2509.03767","created_at":"2026-07-05T12:04:45Z"},{"alias_kind":"pith_short_12","alias_value":"IQJDXOHOQXAC","created_at":"2026-07-05T12:04:45Z"},{"alias_kind":"pith_short_16","alias_value":"IQJDXOHOQXACXNNR","created_at":"2026-07-05T12:04:45Z"},{"alias_kind":"pith_short_8","alias_value":"IQJDXOHO","created_at":"2026-07-05T12:04:45Z"}],"graph_snapshots":[{"event_id":"sha256:91776711fedb83d0bca2175274896268c187e65087665ecaf754199a70936afc","target":"graph","created_at":"2026-07-05T12:04:45Z","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/2509.03767/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Classical T Tauri stars (CTTS) exhibit strong variability over timescales of minutes to decades. However, much theoretical work assumes that CTTS are in stable spin states. Here, we test expectations for CTTS angular momentum regulation by comparing star and disk rotation. We measure stellar rotation periods and disk corotation radii ($R_{\\rm co}$) for 47 CTTS from the HST ULLYSES sample. We compare $R_{\\rm co}$ to the magnetospheric truncation radii ($R_{\\rm i}$) and show that most CTTS are in the spin-up regime based on model predictions, which may indicate efficient angular momentum loss pr","authors_text":"\\'Agnes K\\'osp\\'al, Caeley V. Pittman, C. C. Espaillat, Connor E. Robinson, Nuria Calvet, Thanawuth Thanathibodee, Zhaohuan Zhu","cross_cats":["astro-ph.EP"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.SR","submitted_at":"2025-09-03T23:23:10Z","title":"The ODYSSEUS Survey. Using accretion and stellar rotation to reveal the star-disk connection in T Tauri stars"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2509.03767","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":"sha256:78c156335d26a85ae3fe911c68ebdd615e8b5d9bed32c0b63dc43d3fe5f63950","target":"record","created_at":"2026-07-05T12:04:45Z","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":"99480bd641c744626e45991a9cfba04dac248a2760273af86ad825b269aae890","cross_cats_sorted":["astro-ph.EP"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.SR","submitted_at":"2025-09-03T23:23:10Z","title_canon_sha256":"0675625c8592fa9ce2f5e0dbc235ffe6fb60cf6dbe9248b0dbc76c3a3d6fb4dc"},"schema_version":"1.0","source":{"id":"2509.03767","kind":"arxiv","version":1}},"canonical_sha256":"44123bb8ee85c02bb5b118e62452cbc0edb528f6f1cff552bcd27eabb7f353e8","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"44123bb8ee85c02bb5b118e62452cbc0edb528f6f1cff552bcd27eabb7f353e8","first_computed_at":"2026-07-05T12:04:45.559776Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T12:04:45.559776Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"c6pAYUKUyybp0/d8duTOHJvUv6ueesFI5fXp3ie47TDV5u98Vw6t4yeR72xRhZA0kURyQ5eZGZZ2UytAgiaZBQ==","signature_status":"signed_v1","signed_at":"2026-07-05T12:04:45.560347Z","signed_message":"canonical_sha256_bytes"},"source_id":"2509.03767","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:78c156335d26a85ae3fe911c68ebdd615e8b5d9bed32c0b63dc43d3fe5f63950","sha256:91776711fedb83d0bca2175274896268c187e65087665ecaf754199a70936afc"],"state_sha256":"0925888ee69f225d153ffb4994d97a8f029b5c3bb9ebf9ee6a694ea0f94a8e42"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"HZR82uXEMvPe1Y8vVvmS2+iiQxmZyAguMAu9dRB8pJhO06HooYHlK4s8NPWH/IrlwLp9GjOK5AVwpxlKR7lZDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-21T21:51:23.494610Z","bundle_sha256":"e93038de028337da282445e64e55ffee617f9c8626e5143675de11454f15a225"}}