{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2010:YIWHFUKCKUQDESGN5L7VTHIRDT","short_pith_number":"pith:YIWHFUKC","canonical_record":{"source":{"id":"1006.1508","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2010-06-08T09:49:35Z","cross_cats_sorted":[],"title_canon_sha256":"8dde2f2126027c434f2f0844a76f83d994f1a4a0e68a090b0e16cc0cd5c34b92","abstract_canon_sha256":"daee89b7f8111e1a2e13744c0ef6193dddfa0350b67898fc9e830af9846b15cc"},"schema_version":"1.0"},"canonical_sha256":"c22c72d14255203248cdeaff599d111cf128670d3ec4338f39b2d0cf57083ae9","source":{"kind":"arxiv","id":"1006.1508","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1006.1508","created_at":"2026-05-18T02:06:56Z"},{"alias_kind":"arxiv_version","alias_value":"1006.1508v2","created_at":"2026-05-18T02:06:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1006.1508","created_at":"2026-05-18T02:06:56Z"},{"alias_kind":"pith_short_12","alias_value":"YIWHFUKCKUQD","created_at":"2026-05-18T12:26:17Z"},{"alias_kind":"pith_short_16","alias_value":"YIWHFUKCKUQDESGN","created_at":"2026-05-18T12:26:17Z"},{"alias_kind":"pith_short_8","alias_value":"YIWHFUKC","created_at":"2026-05-18T12:26:17Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2010:YIWHFUKCKUQDESGN5L7VTHIRDT","target":"record","payload":{"canonical_record":{"source":{"id":"1006.1508","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2010-06-08T09:49:35Z","cross_cats_sorted":[],"title_canon_sha256":"8dde2f2126027c434f2f0844a76f83d994f1a4a0e68a090b0e16cc0cd5c34b92","abstract_canon_sha256":"daee89b7f8111e1a2e13744c0ef6193dddfa0350b67898fc9e830af9846b15cc"},"schema_version":"1.0"},"canonical_sha256":"c22c72d14255203248cdeaff599d111cf128670d3ec4338f39b2d0cf57083ae9","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:06:56.197379Z","signature_b64":"axtXYLHhBpedsRzQL8oQouV5rKflSPFDv3BU71YNxT7pjZCU6X2aEVRWlq68BF5BssFz18oCux7BHD8mcrAxBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c22c72d14255203248cdeaff599d111cf128670d3ec4338f39b2d0cf57083ae9","last_reissued_at":"2026-05-18T02:06:56.196624Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:06:56.196624Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1006.1508","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T02:06:56Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hLATSHb2ZWGr3hRmuUGXIY5jOKcfOM1RYWVSVzrAqFTMIbco8t4ecfpkOCee9gyb+gAD6WG70wafR0oTaEtSDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T02:28:40.231618Z"},"content_sha256":"0dd42f81dacbffba5990fec0dbf55d375f123e58b5d56acdab0b9effcb0e941a","schema_version":"1.0","event_id":"sha256:0dd42f81dacbffba5990fec0dbf55d375f123e58b5d56acdab0b9effcb0e941a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2010:YIWHFUKCKUQDESGN5L7VTHIRDT","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Gravitational fragmentation in turbulent primordial gas and the initial mass function of Population III stars","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Paul C. Clark, Ralf S. Klessen, Simon C.O. Glover, Volker Bromm","submitted_at":"2010-06-08T09:49:35Z","abstract_excerpt":"We report results from numerical simulations of star formation in the early universe that focus on the dynamical behavior of metal-free gas under different initial and environmental conditions. In particular we investigate the role of turbulence, which is thought to ubiquitously accompany the collapse of high-redshift halos. We distinguish between two main cases: the birth of Population III.1 stars - those which form in the pristine halos unaffected by prior star formation - and the formation of Population III.2 stars - those forming in halos where the gas is still metal free but has an increa"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1006.1508","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"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":"2026-05-18T02:06:56Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"fBtP452Vg4Dz7RV+QF4B+TrV4PThcVoXwVcNHq8X1OfZEF8PekiGGDrqJl9h6hZhNT0r+3VXVo5Y+PEUEwXjAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T02:28:40.232262Z"},"content_sha256":"d91f0d597431c78ecec8f928434b39409e5fdf2c73f7fb9d49a46e4de55ff945","schema_version":"1.0","event_id":"sha256:d91f0d597431c78ecec8f928434b39409e5fdf2c73f7fb9d49a46e4de55ff945"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/YIWHFUKCKUQDESGN5L7VTHIRDT/bundle.json","state_url":"https://pith.science/pith/YIWHFUKCKUQDESGN5L7VTHIRDT/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/YIWHFUKCKUQDESGN5L7VTHIRDT/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":"2026-05-26T02:28:40Z","links":{"resolver":"https://pith.science/pith/YIWHFUKCKUQDESGN5L7VTHIRDT","bundle":"https://pith.science/pith/YIWHFUKCKUQDESGN5L7VTHIRDT/bundle.json","state":"https://pith.science/pith/YIWHFUKCKUQDESGN5L7VTHIRDT/state.json","well_known_bundle":"https://pith.science/.well-known/pith/YIWHFUKCKUQDESGN5L7VTHIRDT/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:YIWHFUKCKUQDESGN5L7VTHIRDT","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":"daee89b7f8111e1a2e13744c0ef6193dddfa0350b67898fc9e830af9846b15cc","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2010-06-08T09:49:35Z","title_canon_sha256":"8dde2f2126027c434f2f0844a76f83d994f1a4a0e68a090b0e16cc0cd5c34b92"},"schema_version":"1.0","source":{"id":"1006.1508","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1006.1508","created_at":"2026-05-18T02:06:56Z"},{"alias_kind":"arxiv_version","alias_value":"1006.1508v2","created_at":"2026-05-18T02:06:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1006.1508","created_at":"2026-05-18T02:06:56Z"},{"alias_kind":"pith_short_12","alias_value":"YIWHFUKCKUQD","created_at":"2026-05-18T12:26:17Z"},{"alias_kind":"pith_short_16","alias_value":"YIWHFUKCKUQDESGN","created_at":"2026-05-18T12:26:17Z"},{"alias_kind":"pith_short_8","alias_value":"YIWHFUKC","created_at":"2026-05-18T12:26:17Z"}],"graph_snapshots":[{"event_id":"sha256:d91f0d597431c78ecec8f928434b39409e5fdf2c73f7fb9d49a46e4de55ff945","target":"graph","created_at":"2026-05-18T02:06:56Z","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 report results from numerical simulations of star formation in the early universe that focus on the dynamical behavior of metal-free gas under different initial and environmental conditions. In particular we investigate the role of turbulence, which is thought to ubiquitously accompany the collapse of high-redshift halos. We distinguish between two main cases: the birth of Population III.1 stars - those which form in the pristine halos unaffected by prior star formation - and the formation of Population III.2 stars - those forming in halos where the gas is still metal free but has an increa","authors_text":"Paul C. Clark, Ralf S. Klessen, Simon C.O. Glover, Volker Bromm","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2010-06-08T09:49:35Z","title":"Gravitational fragmentation in turbulent primordial gas and the initial mass function of Population III stars"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1006.1508","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":"sha256:0dd42f81dacbffba5990fec0dbf55d375f123e58b5d56acdab0b9effcb0e941a","target":"record","created_at":"2026-05-18T02:06:56Z","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":"daee89b7f8111e1a2e13744c0ef6193dddfa0350b67898fc9e830af9846b15cc","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2010-06-08T09:49:35Z","title_canon_sha256":"8dde2f2126027c434f2f0844a76f83d994f1a4a0e68a090b0e16cc0cd5c34b92"},"schema_version":"1.0","source":{"id":"1006.1508","kind":"arxiv","version":2}},"canonical_sha256":"c22c72d14255203248cdeaff599d111cf128670d3ec4338f39b2d0cf57083ae9","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c22c72d14255203248cdeaff599d111cf128670d3ec4338f39b2d0cf57083ae9","first_computed_at":"2026-05-18T02:06:56.196624Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:06:56.196624Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"axtXYLHhBpedsRzQL8oQouV5rKflSPFDv3BU71YNxT7pjZCU6X2aEVRWlq68BF5BssFz18oCux7BHD8mcrAxBg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:06:56.197379Z","signed_message":"canonical_sha256_bytes"},"source_id":"1006.1508","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0dd42f81dacbffba5990fec0dbf55d375f123e58b5d56acdab0b9effcb0e941a","sha256:d91f0d597431c78ecec8f928434b39409e5fdf2c73f7fb9d49a46e4de55ff945"],"state_sha256":"f5c88c1df00b669e4c3cfbc367a1c691ac07b169088618335f2af44de2ce396c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"bL8S5yrw4I6EvkmYoyZD187scw0neo1iTwJPEzIHYV7fYBTTJ19MfTx4Eb+hrD1+hTjyhlaxv4Cqm/hn/o8oDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T02:28:40.236363Z","bundle_sha256":"ece9c23edb1867b0389e56195069ef5fd4c19c2da7ac9bdd8e63dac952bd8c11"}}