{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2007:XBNG2QSJBEY5UQASTLC2WJSA37","short_pith_number":"pith:XBNG2QSJ","canonical_record":{"source":{"id":"0706.3597","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2007-06-25T12:36:13Z","cross_cats_sorted":[],"title_canon_sha256":"03cd7221aced4e732f3deaf1f8e0ea60d62f559d1d64fc228dade0d8eb21d13d","abstract_canon_sha256":"a3ecbe0738deebb47b8ed407033b9a76cbcc6da499dc86917f02bc2e0041ba0d"},"schema_version":"1.0"},"canonical_sha256":"b85a6d42490931da40129ac5ab2640dff7889a6a9736b1429168254a58936a0e","source":{"kind":"arxiv","id":"0706.3597","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0706.3597","created_at":"2026-07-04T17:04:25Z"},{"alias_kind":"arxiv_version","alias_value":"0706.3597v2","created_at":"2026-07-04T17:04:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0706.3597","created_at":"2026-07-04T17:04:25Z"},{"alias_kind":"pith_short_12","alias_value":"XBNG2QSJBEY5","created_at":"2026-07-04T17:04:25Z"},{"alias_kind":"pith_short_16","alias_value":"XBNG2QSJBEY5UQAS","created_at":"2026-07-04T17:04:25Z"},{"alias_kind":"pith_short_8","alias_value":"XBNG2QSJ","created_at":"2026-07-04T17:04:25Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2007:XBNG2QSJBEY5UQASTLC2WJSA37","target":"record","payload":{"canonical_record":{"source":{"id":"0706.3597","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2007-06-25T12:36:13Z","cross_cats_sorted":[],"title_canon_sha256":"03cd7221aced4e732f3deaf1f8e0ea60d62f559d1d64fc228dade0d8eb21d13d","abstract_canon_sha256":"a3ecbe0738deebb47b8ed407033b9a76cbcc6da499dc86917f02bc2e0041ba0d"},"schema_version":"1.0"},"canonical_sha256":"b85a6d42490931da40129ac5ab2640dff7889a6a9736b1429168254a58936a0e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T17:04:25.167098Z","signature_b64":"oSRKGa0SJ5yyOHUH87DVQOnC/zFLBwNW735c82aipQvsHp7M7y6rroHuosUp/tO1mMnR3xFlmRq6YH17I+/xAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b85a6d42490931da40129ac5ab2640dff7889a6a9736b1429168254a58936a0e","last_reissued_at":"2026-07-04T17:04:25.166724Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T17:04:25.166724Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0706.3597","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":"2026-07-04T17:04:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"nyKRQ5Sapsq8YDP2sXuF604kJaWWwdG+RD17hjONoBx9d6tpI2x6CMXPSwnM/6x7l21OOHhWBbg+sNXo6gurDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T03:11:00.246634Z"},"content_sha256":"4f38fea598361adf755bafdba6ca7e19d2d8e34719f16acb45d357d9db3a2a81","schema_version":"1.0","event_id":"sha256:4f38fea598361adf755bafdba6ca7e19d2d8e34719f16acb45d357d9db3a2a81"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2007:XBNG2QSJBEY5UQASTLC2WJSA37","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Formation of Massive Primordial Stars in a Reionized Gas","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"Kazuyuki Omukai (NAOJ), Lars Hernquist (CfA), Naoki Yoshida (Nagoya)","submitted_at":"2007-06-25T12:36:13Z","abstract_excerpt":"We use cosmological hydrodynamic simulations with unprecedented resolution to study the formation of primordial stars in an ionized gas at high redshifts. Our approach includes all the relevant atomic and molecular physics to follow the thermal evolution of a prestellar gas cloud to very high densities of ~10^{18} cm^{-3}. We locate a star-forming gas cloud within a reionized region in our cosmological simulation. The first run-away collapse is triggered when the gas cloud's mass is ~40 Msun. We show that the cloud core remains stable against chemo-thermal instability and also against gravitat"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0706.3597","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/0706.3597/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":"2026-07-04T17:04:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+YWLN1lha3o5s/w+J1h19cYurYkQ+Myc1Z3k+dDvX1QPMkCOFGTos9BYn/Q3ySzJzmWEsx0YWaTQhWVz6Sh0Ag==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T03:11:00.247189Z"},"content_sha256":"d06b01e1ba0b245df3184973484a0b082511225d30fc98afcbbf096c22ae5812","schema_version":"1.0","event_id":"sha256:d06b01e1ba0b245df3184973484a0b082511225d30fc98afcbbf096c22ae5812"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/XBNG2QSJBEY5UQASTLC2WJSA37/bundle.json","state_url":"https://pith.science/pith/XBNG2QSJBEY5UQASTLC2WJSA37/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/XBNG2QSJBEY5UQASTLC2WJSA37/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":"2026-08-04T03:11:00Z","links":{"resolver":"https://pith.science/pith/XBNG2QSJBEY5UQASTLC2WJSA37","bundle":"https://pith.science/pith/XBNG2QSJBEY5UQASTLC2WJSA37/bundle.json","state":"https://pith.science/pith/XBNG2QSJBEY5UQASTLC2WJSA37/state.json","well_known_bundle":"https://pith.science/.well-known/pith/XBNG2QSJBEY5UQASTLC2WJSA37/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2007:XBNG2QSJBEY5UQASTLC2WJSA37","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":"a3ecbe0738deebb47b8ed407033b9a76cbcc6da499dc86917f02bc2e0041ba0d","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2007-06-25T12:36:13Z","title_canon_sha256":"03cd7221aced4e732f3deaf1f8e0ea60d62f559d1d64fc228dade0d8eb21d13d"},"schema_version":"1.0","source":{"id":"0706.3597","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0706.3597","created_at":"2026-07-04T17:04:25Z"},{"alias_kind":"arxiv_version","alias_value":"0706.3597v2","created_at":"2026-07-04T17:04:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0706.3597","created_at":"2026-07-04T17:04:25Z"},{"alias_kind":"pith_short_12","alias_value":"XBNG2QSJBEY5","created_at":"2026-07-04T17:04:25Z"},{"alias_kind":"pith_short_16","alias_value":"XBNG2QSJBEY5UQAS","created_at":"2026-07-04T17:04:25Z"},{"alias_kind":"pith_short_8","alias_value":"XBNG2QSJ","created_at":"2026-07-04T17:04:25Z"}],"graph_snapshots":[{"event_id":"sha256:d06b01e1ba0b245df3184973484a0b082511225d30fc98afcbbf096c22ae5812","target":"graph","created_at":"2026-07-04T17:04:25Z","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/0706.3597/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We use cosmological hydrodynamic simulations with unprecedented resolution to study the formation of primordial stars in an ionized gas at high redshifts. Our approach includes all the relevant atomic and molecular physics to follow the thermal evolution of a prestellar gas cloud to very high densities of ~10^{18} cm^{-3}. We locate a star-forming gas cloud within a reionized region in our cosmological simulation. The first run-away collapse is triggered when the gas cloud's mass is ~40 Msun. We show that the cloud core remains stable against chemo-thermal instability and also against gravitat","authors_text":"Kazuyuki Omukai (NAOJ), Lars Hernquist (CfA), Naoki Yoshida (Nagoya)","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2007-06-25T12:36:13Z","title":"Formation of Massive Primordial Stars in a Reionized Gas"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0706.3597","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":"sha256:4f38fea598361adf755bafdba6ca7e19d2d8e34719f16acb45d357d9db3a2a81","target":"record","created_at":"2026-07-04T17:04:25Z","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":"a3ecbe0738deebb47b8ed407033b9a76cbcc6da499dc86917f02bc2e0041ba0d","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2007-06-25T12:36:13Z","title_canon_sha256":"03cd7221aced4e732f3deaf1f8e0ea60d62f559d1d64fc228dade0d8eb21d13d"},"schema_version":"1.0","source":{"id":"0706.3597","kind":"arxiv","version":2}},"canonical_sha256":"b85a6d42490931da40129ac5ab2640dff7889a6a9736b1429168254a58936a0e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b85a6d42490931da40129ac5ab2640dff7889a6a9736b1429168254a58936a0e","first_computed_at":"2026-07-04T17:04:25.166724Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T17:04:25.166724Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"oSRKGa0SJ5yyOHUH87DVQOnC/zFLBwNW735c82aipQvsHp7M7y6rroHuosUp/tO1mMnR3xFlmRq6YH17I+/xAQ==","signature_status":"signed_v1","signed_at":"2026-07-04T17:04:25.167098Z","signed_message":"canonical_sha256_bytes"},"source_id":"0706.3597","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4f38fea598361adf755bafdba6ca7e19d2d8e34719f16acb45d357d9db3a2a81","sha256:d06b01e1ba0b245df3184973484a0b082511225d30fc98afcbbf096c22ae5812"],"state_sha256":"134aaf53b5e2ab5a754f4ae8b5a996f333f0ac554d25a1df4e9ef1fe6258c884"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"GVwSmOM0YK4ftcRESdAQArreXdaVSqThyWh1GmgYiKjUaChAZe+pFd6a7HFkNAqMUalBsQyNrWqIgIBT1zh2CA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-04T03:11:00.250491Z","bundle_sha256":"c76e62ef3b92f8049c87ffc7327ac6a2cfd43c6247849aeee9ac04a0e6f08072"}}