{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2008:MOQTPPIFFG5CDC5AJGYVSR3HKW","short_pith_number":"pith:MOQTPPIF","canonical_record":{"source":{"id":"0806.3090","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-06-19T17:46:22Z","cross_cats_sorted":[],"title_canon_sha256":"28a0e2ae32c71e551d363c60c368ecc8584d75c24bcd5255ecc56b79ddc91573","abstract_canon_sha256":"640e2cdef486217dfc9bc987ae1e6dcf917889ff11915a4046364979b296562f"},"schema_version":"1.0"},"canonical_sha256":"63a137bd0529ba218ba049b1594767558f778fc416ee9ef653c3cb7f490ede39","source":{"kind":"arxiv","id":"0806.3090","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0806.3090","created_at":"2026-07-04T17:11:20Z"},{"alias_kind":"arxiv_version","alias_value":"0806.3090v1","created_at":"2026-07-04T17:11:20Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0806.3090","created_at":"2026-07-04T17:11:20Z"},{"alias_kind":"pith_short_12","alias_value":"MOQTPPIFFG5C","created_at":"2026-07-04T17:11:20Z"},{"alias_kind":"pith_short_16","alias_value":"MOQTPPIFFG5CDC5A","created_at":"2026-07-04T17:11:20Z"},{"alias_kind":"pith_short_8","alias_value":"MOQTPPIF","created_at":"2026-07-04T17:11:20Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2008:MOQTPPIFFG5CDC5AJGYVSR3HKW","target":"record","payload":{"canonical_record":{"source":{"id":"0806.3090","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-06-19T17:46:22Z","cross_cats_sorted":[],"title_canon_sha256":"28a0e2ae32c71e551d363c60c368ecc8584d75c24bcd5255ecc56b79ddc91573","abstract_canon_sha256":"640e2cdef486217dfc9bc987ae1e6dcf917889ff11915a4046364979b296562f"},"schema_version":"1.0"},"canonical_sha256":"63a137bd0529ba218ba049b1594767558f778fc416ee9ef653c3cb7f490ede39","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T17:11:20.205628Z","signature_b64":"Sq/PUI4hKj2Nb6XXbRIKg6YyykmKi4xRe6MNDAQsGNcWXkuul4ymW1jq02StSDQwg2pQ+LwrMTJyqyw6CPsaAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"63a137bd0529ba218ba049b1594767558f778fc416ee9ef653c3cb7f490ede39","last_reissued_at":"2026-07-04T17:11:20.205206Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T17:11:20.205206Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0806.3090","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":"2026-07-04T17:11:20Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3RUK2HOkASVxPEFjwW1aMnaboYpYd0ZVBnSs+FvxOIaLdTVEjHR76gI+o/JKUR9mc1IqISBRtRHVAOpdJYhYAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-21T08:19:12.887798Z"},"content_sha256":"92670b2fce0e16ff8d2e55138659d6a8b6912fbb5a4e3d9473303a742c6d48ea","schema_version":"1.0","event_id":"sha256:92670b2fce0e16ff8d2e55138659d6a8b6912fbb5a4e3d9473303a742c6d48ea"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2008:MOQTPPIFFG5CDC5AJGYVSR3HKW","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"UV Radiative Feedback During the Advanced Stages of Reionization","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"Andrei Mesinger, Mark Dijkstra","submitted_at":"2008-06-19T17:46:22Z","abstract_excerpt":"The ionizing ultraviolet background (UVB) during reionization can suppress the gas content of low-mass galaxies, even those capable of efficient atomic cooling, and thus lead to an extended reionization epoch. In this work, we explore the importance of negative UV radiative feedback on Tvir > 10^4 K halos during the middle and late stages of reionization. We do not try to self-consistently model reionization; instead, we explore a large parameter space in an attempt to draw general, robust conclusions. We do this using a tiered approach. Using 1-D hydrodynamical simulations, we model the colla"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0806.3090","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/0806.3090/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":"2026-07-04T17:11:20Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"bDB7eUYakb1+g7KN5kPiKZ4URf99tHYq3UnFDcLYrVIGqGNvsvBz4g7y59zXLYBi3U/zsYLx6ZVOP7hCzejLDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-21T08:19:12.888403Z"},"content_sha256":"be2381a9fa59018c261d61fb9edd737cfa4840113255cf9855ad95c80cb44a93","schema_version":"1.0","event_id":"sha256:be2381a9fa59018c261d61fb9edd737cfa4840113255cf9855ad95c80cb44a93"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/MOQTPPIFFG5CDC5AJGYVSR3HKW/bundle.json","state_url":"https://pith.science/pith/MOQTPPIFFG5CDC5AJGYVSR3HKW/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/MOQTPPIFFG5CDC5AJGYVSR3HKW/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":"2026-08-21T08:19:12Z","links":{"resolver":"https://pith.science/pith/MOQTPPIFFG5CDC5AJGYVSR3HKW","bundle":"https://pith.science/pith/MOQTPPIFFG5CDC5AJGYVSR3HKW/bundle.json","state":"https://pith.science/pith/MOQTPPIFFG5CDC5AJGYVSR3HKW/state.json","well_known_bundle":"https://pith.science/.well-known/pith/MOQTPPIFFG5CDC5AJGYVSR3HKW/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2008:MOQTPPIFFG5CDC5AJGYVSR3HKW","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":"640e2cdef486217dfc9bc987ae1e6dcf917889ff11915a4046364979b296562f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-06-19T17:46:22Z","title_canon_sha256":"28a0e2ae32c71e551d363c60c368ecc8584d75c24bcd5255ecc56b79ddc91573"},"schema_version":"1.0","source":{"id":"0806.3090","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0806.3090","created_at":"2026-07-04T17:11:20Z"},{"alias_kind":"arxiv_version","alias_value":"0806.3090v1","created_at":"2026-07-04T17:11:20Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0806.3090","created_at":"2026-07-04T17:11:20Z"},{"alias_kind":"pith_short_12","alias_value":"MOQTPPIFFG5C","created_at":"2026-07-04T17:11:20Z"},{"alias_kind":"pith_short_16","alias_value":"MOQTPPIFFG5CDC5A","created_at":"2026-07-04T17:11:20Z"},{"alias_kind":"pith_short_8","alias_value":"MOQTPPIF","created_at":"2026-07-04T17:11:20Z"}],"graph_snapshots":[{"event_id":"sha256:be2381a9fa59018c261d61fb9edd737cfa4840113255cf9855ad95c80cb44a93","target":"graph","created_at":"2026-07-04T17:11:20Z","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/0806.3090/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The ionizing ultraviolet background (UVB) during reionization can suppress the gas content of low-mass galaxies, even those capable of efficient atomic cooling, and thus lead to an extended reionization epoch. In this work, we explore the importance of negative UV radiative feedback on Tvir > 10^4 K halos during the middle and late stages of reionization. We do not try to self-consistently model reionization; instead, we explore a large parameter space in an attempt to draw general, robust conclusions. We do this using a tiered approach. Using 1-D hydrodynamical simulations, we model the colla","authors_text":"Andrei Mesinger, Mark Dijkstra","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-06-19T17:46:22Z","title":"UV Radiative Feedback During the Advanced Stages of Reionization"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0806.3090","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":"sha256:92670b2fce0e16ff8d2e55138659d6a8b6912fbb5a4e3d9473303a742c6d48ea","target":"record","created_at":"2026-07-04T17:11:20Z","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":"640e2cdef486217dfc9bc987ae1e6dcf917889ff11915a4046364979b296562f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-06-19T17:46:22Z","title_canon_sha256":"28a0e2ae32c71e551d363c60c368ecc8584d75c24bcd5255ecc56b79ddc91573"},"schema_version":"1.0","source":{"id":"0806.3090","kind":"arxiv","version":1}},"canonical_sha256":"63a137bd0529ba218ba049b1594767558f778fc416ee9ef653c3cb7f490ede39","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"63a137bd0529ba218ba049b1594767558f778fc416ee9ef653c3cb7f490ede39","first_computed_at":"2026-07-04T17:11:20.205206Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T17:11:20.205206Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Sq/PUI4hKj2Nb6XXbRIKg6YyykmKi4xRe6MNDAQsGNcWXkuul4ymW1jq02StSDQwg2pQ+LwrMTJyqyw6CPsaAw==","signature_status":"signed_v1","signed_at":"2026-07-04T17:11:20.205628Z","signed_message":"canonical_sha256_bytes"},"source_id":"0806.3090","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:92670b2fce0e16ff8d2e55138659d6a8b6912fbb5a4e3d9473303a742c6d48ea","sha256:be2381a9fa59018c261d61fb9edd737cfa4840113255cf9855ad95c80cb44a93"],"state_sha256":"db019bf4dc8eadc7e0d6062071dd70aa8899c9af11e662a691ba021fa34a4c19"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"OmQx55x7p6SLAlK8xd5x/wybu0JzCQLYymO98HfdLIgP9GClVXPDarOqdYrDtru14zN5LWTkqR1oOMZUURlWCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-21T08:19:12.893462Z","bundle_sha256":"28c612d10a66ba23ea5c83a1ccf9088cf04b4184fc20a57fbd5398428d1ff1f4"}}