{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:HRE27BQEN6ZI4TLLTUXF4B3IOA","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":"1cfbc982e2b399692922f77ccf6f810d90e51cd35ec4801ffe48cf3233b52655","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-02-11T21:00:47Z","title_canon_sha256":"bf3c70c6f2b6fd71837f39ab8daceaf49a7e4e7094284255d5242a17f597ccd5"},"schema_version":"1.0","source":{"id":"1502.03448","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1502.03448","created_at":"2026-05-18T01:24:30Z"},{"alias_kind":"arxiv_version","alias_value":"1502.03448v2","created_at":"2026-05-18T01:24:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1502.03448","created_at":"2026-05-18T01:24:30Z"},{"alias_kind":"pith_short_12","alias_value":"HRE27BQEN6ZI","created_at":"2026-05-18T12:29:25Z"},{"alias_kind":"pith_short_16","alias_value":"HRE27BQEN6ZI4TLL","created_at":"2026-05-18T12:29:25Z"},{"alias_kind":"pith_short_8","alias_value":"HRE27BQE","created_at":"2026-05-18T12:29:25Z"}],"graph_snapshots":[{"event_id":"sha256:a0b77a1f914f0f40c8c5e7d859f8e5fb14baf712f9302f079508dddc8b99d10f","target":"graph","created_at":"2026-05-18T01:24:30Z","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":"We study how runaway stellar collisions in high-redshift, metal-poor star clusters form very massive stars (VMSs) that can directly collapse to intermediate-mass black holes (IMBHs). We follow the evolution of a pair of neighbouring high-redshift mini-haloes with high-resolution, cosmological hydrodynamical zoom-in simulations using the adaptive mesh refinement code RAMSES combined with the non-equilibrium chemistry package KROME. The first collapsing mini-halo is assumed to enrich the central nuclear star cluster (NSC) of the other to a critical metallicity, sufficient for Population II (Pop.","authors_text":"Debora Sijacki, Harley Katz, Martin G. Haehnelt","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-02-11T21:00:47Z","title":"Seeding High Redshift QSOs by Collisional Runaway in Primordial Star Clusters"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1502.03448","kind":"arxiv","version":2},"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:b413a7daf004703a3f85be83dcb275ea391df9ae55c7c5d7174b5674e4094e09","target":"record","created_at":"2026-05-18T01:24:30Z","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":"1cfbc982e2b399692922f77ccf6f810d90e51cd35ec4801ffe48cf3233b52655","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-02-11T21:00:47Z","title_canon_sha256":"bf3c70c6f2b6fd71837f39ab8daceaf49a7e4e7094284255d5242a17f597ccd5"},"schema_version":"1.0","source":{"id":"1502.03448","kind":"arxiv","version":2}},"canonical_sha256":"3c49af86046fb28e4d6b9d2e5e07687033bd72a1aab3eea32807134f476ae53a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3c49af86046fb28e4d6b9d2e5e07687033bd72a1aab3eea32807134f476ae53a","first_computed_at":"2026-05-18T01:24:30.416007Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:24:30.416007Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"gMOievJdx81fVIbnpA431j6CdkM1H9d+TOiuOGyylf8f/kUGJ78uWkjJTBxwm1z8V0iXBa89hd/ZmuVfxo8dCA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:24:30.416551Z","signed_message":"canonical_sha256_bytes"},"source_id":"1502.03448","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b413a7daf004703a3f85be83dcb275ea391df9ae55c7c5d7174b5674e4094e09","sha256:a0b77a1f914f0f40c8c5e7d859f8e5fb14baf712f9302f079508dddc8b99d10f"],"state_sha256":"c83730a5a14fe172ce04c886c1b4aff571551e87ac25065a8f6d6608880f473d"}