{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:GCGJIQGEMJMCCWD53RVEFVRQLY","short_pith_number":"pith:GCGJIQGE","canonical_record":{"source":{"id":"1708.08277","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2017-08-28T11:45:55Z","cross_cats_sorted":[],"title_canon_sha256":"0f3c02fb47a6195e9895e0cbe0e427a4608aa1e2bd43d7243c84ec654ba351dc","abstract_canon_sha256":"629c752a8d691171355877619c7b9ee29b45930eb73805f790671bc0ba0a06c8"},"schema_version":"1.0"},"canonical_sha256":"308c9440c4625821587ddc6a42d6305e35a6eee39adc3956eb3cda12d16895d4","source":{"kind":"arxiv","id":"1708.08277","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1708.08277","created_at":"2026-05-18T00:24:51Z"},{"alias_kind":"arxiv_version","alias_value":"1708.08277v1","created_at":"2026-05-18T00:24:51Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1708.08277","created_at":"2026-05-18T00:24:51Z"},{"alias_kind":"pith_short_12","alias_value":"GCGJIQGEMJMC","created_at":"2026-05-18T12:31:15Z"},{"alias_kind":"pith_short_16","alias_value":"GCGJIQGEMJMCCWD5","created_at":"2026-05-18T12:31:15Z"},{"alias_kind":"pith_short_8","alias_value":"GCGJIQGE","created_at":"2026-05-18T12:31:15Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:GCGJIQGEMJMCCWD53RVEFVRQLY","target":"record","payload":{"canonical_record":{"source":{"id":"1708.08277","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2017-08-28T11:45:55Z","cross_cats_sorted":[],"title_canon_sha256":"0f3c02fb47a6195e9895e0cbe0e427a4608aa1e2bd43d7243c84ec654ba351dc","abstract_canon_sha256":"629c752a8d691171355877619c7b9ee29b45930eb73805f790671bc0ba0a06c8"},"schema_version":"1.0"},"canonical_sha256":"308c9440c4625821587ddc6a42d6305e35a6eee39adc3956eb3cda12d16895d4","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:24:51.880505Z","signature_b64":"M+wCeZjhINbzUaCMaixbD/XY0F1PQkFzr3pC/3DigMX2BUVz5qcfWQwAGbBUGY7FEOhKMMFndylIic7KCYDoAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"308c9440c4625821587ddc6a42d6305e35a6eee39adc3956eb3cda12d16895d4","last_reissued_at":"2026-05-18T00:24:51.879923Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:24:51.879923Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1708.08277","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":"2026-05-18T00:24:51Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"UwJafTunaHqgF+X5V8qzP/bR+4qCY7N2eIlSki+adgLEG4oj6kZtwEGCY9tnhujwlu9WEyVyJT0g9kRWHMBFAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T20:47:19.649504Z"},"content_sha256":"6cec6046e3723dc9c5e90f88c083a3ba613177faef577c5d4bf0d534dd0cb8ca","schema_version":"1.0","event_id":"sha256:6cec6046e3723dc9c5e90f88c083a3ba613177faef577c5d4bf0d534dd0cb8ca"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:GCGJIQGEMJMCCWD53RVEFVRQLY","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Warm Dark Matter and Cosmic Reionization","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"Nickolay Y. Gnedin, Olga Mena, Pablo Villanueva-Domingo","submitted_at":"2017-08-28T11:45:55Z","abstract_excerpt":"In models with dark matter made of particles with keV masses, such as a sterile neutrino, small-scale density perturbations are suppressed, delaying the period at which the lowest mass galaxies are formed and therefore shifting the reionization processes to later epochs. In this study, focusing on Warm Dark Matter (WDM) with masses close to its present lower bound, i.e. around the $3$ keV region, we derive constraints from galaxy luminosy functions, the ionization history and the Gunn-Peterson effect. We show that even if star formation efficiency in the simulations is adjusted to match the ob"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1708.08277","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":""},"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":"2026-05-18T00:24:51Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"4R62HG//1lRpeoTVKlrXaPomd/pEsCXcKLzSPix9aWyuhicAUSOKZJG4EsmWGjqa8qLxVGtU9G8SRVjGcv6uDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T20:47:19.649853Z"},"content_sha256":"19a0814dd66bc0f98eafeca6f15d1dededdfa6513924ffcb96d95f66969f5979","schema_version":"1.0","event_id":"sha256:19a0814dd66bc0f98eafeca6f15d1dededdfa6513924ffcb96d95f66969f5979"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/GCGJIQGEMJMCCWD53RVEFVRQLY/bundle.json","state_url":"https://pith.science/pith/GCGJIQGEMJMCCWD53RVEFVRQLY/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/GCGJIQGEMJMCCWD53RVEFVRQLY/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":"2026-06-01T20:47:19Z","links":{"resolver":"https://pith.science/pith/GCGJIQGEMJMCCWD53RVEFVRQLY","bundle":"https://pith.science/pith/GCGJIQGEMJMCCWD53RVEFVRQLY/bundle.json","state":"https://pith.science/pith/GCGJIQGEMJMCCWD53RVEFVRQLY/state.json","well_known_bundle":"https://pith.science/.well-known/pith/GCGJIQGEMJMCCWD53RVEFVRQLY/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:GCGJIQGEMJMCCWD53RVEFVRQLY","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":"629c752a8d691171355877619c7b9ee29b45930eb73805f790671bc0ba0a06c8","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2017-08-28T11:45:55Z","title_canon_sha256":"0f3c02fb47a6195e9895e0cbe0e427a4608aa1e2bd43d7243c84ec654ba351dc"},"schema_version":"1.0","source":{"id":"1708.08277","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1708.08277","created_at":"2026-05-18T00:24:51Z"},{"alias_kind":"arxiv_version","alias_value":"1708.08277v1","created_at":"2026-05-18T00:24:51Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1708.08277","created_at":"2026-05-18T00:24:51Z"},{"alias_kind":"pith_short_12","alias_value":"GCGJIQGEMJMC","created_at":"2026-05-18T12:31:15Z"},{"alias_kind":"pith_short_16","alias_value":"GCGJIQGEMJMCCWD5","created_at":"2026-05-18T12:31:15Z"},{"alias_kind":"pith_short_8","alias_value":"GCGJIQGE","created_at":"2026-05-18T12:31:15Z"}],"graph_snapshots":[{"event_id":"sha256:19a0814dd66bc0f98eafeca6f15d1dededdfa6513924ffcb96d95f66969f5979","target":"graph","created_at":"2026-05-18T00:24:51Z","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":"In models with dark matter made of particles with keV masses, such as a sterile neutrino, small-scale density perturbations are suppressed, delaying the period at which the lowest mass galaxies are formed and therefore shifting the reionization processes to later epochs. In this study, focusing on Warm Dark Matter (WDM) with masses close to its present lower bound, i.e. around the $3$ keV region, we derive constraints from galaxy luminosy functions, the ionization history and the Gunn-Peterson effect. We show that even if star formation efficiency in the simulations is adjusted to match the ob","authors_text":"Nickolay Y. Gnedin, Olga Mena, Pablo Villanueva-Domingo","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2017-08-28T11:45:55Z","title":"Warm Dark Matter and Cosmic Reionization"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1708.08277","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":"sha256:6cec6046e3723dc9c5e90f88c083a3ba613177faef577c5d4bf0d534dd0cb8ca","target":"record","created_at":"2026-05-18T00:24:51Z","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":"629c752a8d691171355877619c7b9ee29b45930eb73805f790671bc0ba0a06c8","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2017-08-28T11:45:55Z","title_canon_sha256":"0f3c02fb47a6195e9895e0cbe0e427a4608aa1e2bd43d7243c84ec654ba351dc"},"schema_version":"1.0","source":{"id":"1708.08277","kind":"arxiv","version":1}},"canonical_sha256":"308c9440c4625821587ddc6a42d6305e35a6eee39adc3956eb3cda12d16895d4","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"308c9440c4625821587ddc6a42d6305e35a6eee39adc3956eb3cda12d16895d4","first_computed_at":"2026-05-18T00:24:51.879923Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:24:51.879923Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"M+wCeZjhINbzUaCMaixbD/XY0F1PQkFzr3pC/3DigMX2BUVz5qcfWQwAGbBUGY7FEOhKMMFndylIic7KCYDoAA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:24:51.880505Z","signed_message":"canonical_sha256_bytes"},"source_id":"1708.08277","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:6cec6046e3723dc9c5e90f88c083a3ba613177faef577c5d4bf0d534dd0cb8ca","sha256:19a0814dd66bc0f98eafeca6f15d1dededdfa6513924ffcb96d95f66969f5979"],"state_sha256":"abee7ee28d3d1167df4ae280b30c33af9ae334d53640a5377af4982b67f6a7bf"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"D5Qt0wejBI8A6Y4Q7OQKow5VZDKeuGs0uAOQXlEE9EAimP92VYa5egZl/z7VlNV5SYuYktFoE/wUGoOXaYrOBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-01T20:47:19.651800Z","bundle_sha256":"ea4f717f964728d957909af70feb3db6a7de35c64e493a12c5adde55ba968d55"}}