{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:4IATAZ255HX7HT5BB6WJASX5BK","short_pith_number":"pith:4IATAZ25","canonical_record":{"source":{"id":"2509.07083","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2025-09-08T18:00:03Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"4a45d823d4da3098f9f39ad5fbdbe49e46d470d3e263b1b4cbef440871923e68","abstract_canon_sha256":"b4b529d32007c0f6c48ed1ac6f81ed0c8d30bc0cea729d30bce4c640bdb2e0a4"},"schema_version":"1.0"},"canonical_sha256":"e20130675de9eff3cfa10fac904afd0aa8a6c0d6fa358e5c4b558d031e3e74c7","source":{"kind":"arxiv","id":"2509.07083","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2509.07083","created_at":"2026-07-05T12:07:15Z"},{"alias_kind":"arxiv_version","alias_value":"2509.07083v1","created_at":"2026-07-05T12:07:15Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2509.07083","created_at":"2026-07-05T12:07:15Z"},{"alias_kind":"pith_short_12","alias_value":"4IATAZ255HX7","created_at":"2026-07-05T12:07:15Z"},{"alias_kind":"pith_short_16","alias_value":"4IATAZ255HX7HT5B","created_at":"2026-07-05T12:07:15Z"},{"alias_kind":"pith_short_8","alias_value":"4IATAZ25","created_at":"2026-07-05T12:07:15Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:4IATAZ255HX7HT5BB6WJASX5BK","target":"record","payload":{"canonical_record":{"source":{"id":"2509.07083","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2025-09-08T18:00:03Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"4a45d823d4da3098f9f39ad5fbdbe49e46d470d3e263b1b4cbef440871923e68","abstract_canon_sha256":"b4b529d32007c0f6c48ed1ac6f81ed0c8d30bc0cea729d30bce4c640bdb2e0a4"},"schema_version":"1.0"},"canonical_sha256":"e20130675de9eff3cfa10fac904afd0aa8a6c0d6fa358e5c4b558d031e3e74c7","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T12:07:15.301512Z","signature_b64":"so3llF3ZE0ZMb9LXpgoa51nT1B913qUGdCGv3he0krxZYq+xezXn0o24Fu7dIWRaSSG3FmNuXqnvH34RrUa5CA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e20130675de9eff3cfa10fac904afd0aa8a6c0d6fa358e5c4b558d031e3e74c7","last_reissued_at":"2026-07-05T12:07:15.300891Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T12:07:15.300891Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2509.07083","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":"2026-07-05T12:07:15Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"KcFXzcIbZzoaeQIaFdiHtEVorrc7ypwfhFI1hSCbF8KHZUCb+smf7k0L1e9aVw0f+zLsjMVV9CIdNgNzqZmECg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T07:10:35.119444Z"},"content_sha256":"445cc65b8031cac7901ed46bde93e390c7eab5e4db5a7f1eb9f1193c2bcd38e6","schema_version":"1.0","event_id":"sha256:445cc65b8031cac7901ed46bde93e390c7eab5e4db5a7f1eb9f1193c2bcd38e6"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:4IATAZ255HX7HT5BB6WJASX5BK","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Prestellar Cores in Turbulent Clouds: Observational Perspectives on Structure, Kinematics, and Lifetime","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.GA","authors_text":"Eve C. Ostriker, Sanghyuk Moon","submitted_at":"2025-09-08T18:00:03Z","abstract_excerpt":"We analyze an ensemble of simulated prestellar cores to facilitate interpretation of structure, kinematics, and lifetime of observed cores. While our theory predicts a \"characteristic\" density for star formation, it also predicts that the individual critical density varies among cores; any observed sample thus contains cores at various evolutionary stages within a given density bin. By analyzing the remaining lifetime, we find cores undergoing quasi-equilibrium collapse evolve on a timescale of twice the freefall time throughout most of their life. Our analysis shows that the central column de"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2509.07083","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/2509.07083/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":"2026-07-05T12:07:15Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"u7yU71PpEv37fSHSY11FnoVzNZmm6TYDm7WhqEEo5q7bXA8vUIebh5G4U++qYUaIbQ/cPO7SpVKmFcUxoiReAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T07:10:35.119975Z"},"content_sha256":"4becb5ccf614ee3d8225bfe803f57390715343ba00a233955fb11a4718373870","schema_version":"1.0","event_id":"sha256:4becb5ccf614ee3d8225bfe803f57390715343ba00a233955fb11a4718373870"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/4IATAZ255HX7HT5BB6WJASX5BK/bundle.json","state_url":"https://pith.science/pith/4IATAZ255HX7HT5BB6WJASX5BK/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/4IATAZ255HX7HT5BB6WJASX5BK/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":"2026-08-05T07:10:35Z","links":{"resolver":"https://pith.science/pith/4IATAZ255HX7HT5BB6WJASX5BK","bundle":"https://pith.science/pith/4IATAZ255HX7HT5BB6WJASX5BK/bundle.json","state":"https://pith.science/pith/4IATAZ255HX7HT5BB6WJASX5BK/state.json","well_known_bundle":"https://pith.science/.well-known/pith/4IATAZ255HX7HT5BB6WJASX5BK/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:4IATAZ255HX7HT5BB6WJASX5BK","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":"b4b529d32007c0f6c48ed1ac6f81ed0c8d30bc0cea729d30bce4c640bdb2e0a4","cross_cats_sorted":["astro-ph.SR"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2025-09-08T18:00:03Z","title_canon_sha256":"4a45d823d4da3098f9f39ad5fbdbe49e46d470d3e263b1b4cbef440871923e68"},"schema_version":"1.0","source":{"id":"2509.07083","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2509.07083","created_at":"2026-07-05T12:07:15Z"},{"alias_kind":"arxiv_version","alias_value":"2509.07083v1","created_at":"2026-07-05T12:07:15Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2509.07083","created_at":"2026-07-05T12:07:15Z"},{"alias_kind":"pith_short_12","alias_value":"4IATAZ255HX7","created_at":"2026-07-05T12:07:15Z"},{"alias_kind":"pith_short_16","alias_value":"4IATAZ255HX7HT5B","created_at":"2026-07-05T12:07:15Z"},{"alias_kind":"pith_short_8","alias_value":"4IATAZ25","created_at":"2026-07-05T12:07:15Z"}],"graph_snapshots":[{"event_id":"sha256:4becb5ccf614ee3d8225bfe803f57390715343ba00a233955fb11a4718373870","target":"graph","created_at":"2026-07-05T12:07:15Z","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/2509.07083/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We analyze an ensemble of simulated prestellar cores to facilitate interpretation of structure, kinematics, and lifetime of observed cores. While our theory predicts a \"characteristic\" density for star formation, it also predicts that the individual critical density varies among cores; any observed sample thus contains cores at various evolutionary stages within a given density bin. By analyzing the remaining lifetime, we find cores undergoing quasi-equilibrium collapse evolve on a timescale of twice the freefall time throughout most of their life. Our analysis shows that the central column de","authors_text":"Eve C. Ostriker, Sanghyuk Moon","cross_cats":["astro-ph.SR"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2025-09-08T18:00:03Z","title":"Prestellar Cores in Turbulent Clouds: Observational Perspectives on Structure, Kinematics, and Lifetime"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2509.07083","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":"sha256:445cc65b8031cac7901ed46bde93e390c7eab5e4db5a7f1eb9f1193c2bcd38e6","target":"record","created_at":"2026-07-05T12:07:15Z","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":"b4b529d32007c0f6c48ed1ac6f81ed0c8d30bc0cea729d30bce4c640bdb2e0a4","cross_cats_sorted":["astro-ph.SR"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2025-09-08T18:00:03Z","title_canon_sha256":"4a45d823d4da3098f9f39ad5fbdbe49e46d470d3e263b1b4cbef440871923e68"},"schema_version":"1.0","source":{"id":"2509.07083","kind":"arxiv","version":1}},"canonical_sha256":"e20130675de9eff3cfa10fac904afd0aa8a6c0d6fa358e5c4b558d031e3e74c7","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e20130675de9eff3cfa10fac904afd0aa8a6c0d6fa358e5c4b558d031e3e74c7","first_computed_at":"2026-07-05T12:07:15.300891Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T12:07:15.300891Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"so3llF3ZE0ZMb9LXpgoa51nT1B913qUGdCGv3he0krxZYq+xezXn0o24Fu7dIWRaSSG3FmNuXqnvH34RrUa5CA==","signature_status":"signed_v1","signed_at":"2026-07-05T12:07:15.301512Z","signed_message":"canonical_sha256_bytes"},"source_id":"2509.07083","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:445cc65b8031cac7901ed46bde93e390c7eab5e4db5a7f1eb9f1193c2bcd38e6","sha256:4becb5ccf614ee3d8225bfe803f57390715343ba00a233955fb11a4718373870"],"state_sha256":"b8efee91020c170c6785edfd69db09c4c41974373b481b07b42bbce9617421be"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ll4WUpY2ylZ7wyULkc3+ejvLL6GX217+YARyuHsQGR+D6pJGplS2UiFKuGwA7XrpTwKYazQypjY6cy74vE0uBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-05T07:10:35.123231Z","bundle_sha256":"2c70af1f296b64fc632151a597758915b94b764811d9697e9b74144c948dc6af"}}