{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:IFZHGJ4NSCBIZZZQLNIEG4T2UA","short_pith_number":"pith:IFZHGJ4N","canonical_record":{"source":{"id":"1510.07006","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2015-10-23T18:27:40Z","cross_cats_sorted":["astro-ph.GA","hep-ph"],"title_canon_sha256":"69a0db7bd03a1c7e7d8f5c24bfcfd7167c8ebd7cfedf984db30917cf8f81956e","abstract_canon_sha256":"5800d22b0924974fb3e47da1643e51a62c3d702b9e97bb211121bf6f36c04f4e"},"schema_version":"1.0"},"canonical_sha256":"417273278d90828ce7305b5043727aa0329f372b6f68fe78855c454a4ecd4e48","source":{"kind":"arxiv","id":"1510.07006","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1510.07006","created_at":"2026-05-18T00:35:09Z"},{"alias_kind":"arxiv_version","alias_value":"1510.07006v2","created_at":"2026-05-18T00:35:09Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1510.07006","created_at":"2026-05-18T00:35:09Z"},{"alias_kind":"pith_short_12","alias_value":"IFZHGJ4NSCBI","created_at":"2026-05-18T12:29:25Z"},{"alias_kind":"pith_short_16","alias_value":"IFZHGJ4NSCBIZZZQ","created_at":"2026-05-18T12:29:25Z"},{"alias_kind":"pith_short_8","alias_value":"IFZHGJ4N","created_at":"2026-05-18T12:29:25Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:IFZHGJ4NSCBIZZZQLNIEG4T2UA","target":"record","payload":{"canonical_record":{"source":{"id":"1510.07006","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2015-10-23T18:27:40Z","cross_cats_sorted":["astro-ph.GA","hep-ph"],"title_canon_sha256":"69a0db7bd03a1c7e7d8f5c24bfcfd7167c8ebd7cfedf984db30917cf8f81956e","abstract_canon_sha256":"5800d22b0924974fb3e47da1643e51a62c3d702b9e97bb211121bf6f36c04f4e"},"schema_version":"1.0"},"canonical_sha256":"417273278d90828ce7305b5043727aa0329f372b6f68fe78855c454a4ecd4e48","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:35:09.581390Z","signature_b64":"ndk9Au/LLHffAs/0GvJZv2YTCeubr8qxoLw95LiG7+yyeOE8kdLd/kvA2mWYcczRLGRpgpQmyuHD5J2HOur8DQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"417273278d90828ce7305b5043727aa0329f372b6f68fe78855c454a4ecd4e48","last_reissued_at":"2026-05-18T00:35:09.580974Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:35:09.580974Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1510.07006","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":"2026-05-18T00:35:09Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"sUWMchtFtfU+C/Qg+5qFyYVpJvMtuu00e5in0kpaDfVCua5vEuyIWwgwtt0Lrc4A3L+W0EQmsfbChnQ+41r/Cw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T10:07:20.807460Z"},"content_sha256":"53600204f3f0081ca58e883c540a4a397bd51a0c9e9dc97e60b73798da1d979e","schema_version":"1.0","event_id":"sha256:53600204f3f0081ca58e883c540a4a397bd51a0c9e9dc97e60b73798da1d979e"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:IFZHGJ4NSCBIZZZQLNIEG4T2UA","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Cutoff in the Lyman-$\\alpha$ forest power spectrum: warm IGM or warm dark matter?","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA","hep-ph"],"primary_cat":"astro-ph.CO","authors_text":"Alexey Boyarsky, Antonella Garzilli, Oleg Ruchayskiy","submitted_at":"2015-10-23T18:27:40Z","abstract_excerpt":"We re-analyse high redshift and high resolution Lyman-$\\alpha$ forest spectra considered in (Viel et al 2013), seeking to constrain the properties of warm dark matter particles. Compared to this previous work, we consider a wider range of thermal histories of the intergalactic medium. We find that both warm and cold dark matter models can explain the cut-off observed in the flux power spectra of high-resolution observations equally well. This implies, however, very different thermal histories and underlying re-ionisation models. We discuss how to remove this degeneracy."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1510.07006","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":"2026-05-18T00:35:09Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"gsvP/aPhpr/pRD7aQvc7vyl92X+ImRzO8N9WJBGUd3lqcS3r4FAB+CRCd1ahUOE1gnMEnsx29rQL0VySbt+jDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T10:07:20.807819Z"},"content_sha256":"f49ac78d6b939a93bbdbb6968d685afeed6acef2680ea3c18e59ac08c377e101","schema_version":"1.0","event_id":"sha256:f49ac78d6b939a93bbdbb6968d685afeed6acef2680ea3c18e59ac08c377e101"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/IFZHGJ4NSCBIZZZQLNIEG4T2UA/bundle.json","state_url":"https://pith.science/pith/IFZHGJ4NSCBIZZZQLNIEG4T2UA/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/IFZHGJ4NSCBIZZZQLNIEG4T2UA/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":"2026-05-28T10:07:20Z","links":{"resolver":"https://pith.science/pith/IFZHGJ4NSCBIZZZQLNIEG4T2UA","bundle":"https://pith.science/pith/IFZHGJ4NSCBIZZZQLNIEG4T2UA/bundle.json","state":"https://pith.science/pith/IFZHGJ4NSCBIZZZQLNIEG4T2UA/state.json","well_known_bundle":"https://pith.science/.well-known/pith/IFZHGJ4NSCBIZZZQLNIEG4T2UA/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:IFZHGJ4NSCBIZZZQLNIEG4T2UA","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":"5800d22b0924974fb3e47da1643e51a62c3d702b9e97bb211121bf6f36c04f4e","cross_cats_sorted":["astro-ph.GA","hep-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2015-10-23T18:27:40Z","title_canon_sha256":"69a0db7bd03a1c7e7d8f5c24bfcfd7167c8ebd7cfedf984db30917cf8f81956e"},"schema_version":"1.0","source":{"id":"1510.07006","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1510.07006","created_at":"2026-05-18T00:35:09Z"},{"alias_kind":"arxiv_version","alias_value":"1510.07006v2","created_at":"2026-05-18T00:35:09Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1510.07006","created_at":"2026-05-18T00:35:09Z"},{"alias_kind":"pith_short_12","alias_value":"IFZHGJ4NSCBI","created_at":"2026-05-18T12:29:25Z"},{"alias_kind":"pith_short_16","alias_value":"IFZHGJ4NSCBIZZZQ","created_at":"2026-05-18T12:29:25Z"},{"alias_kind":"pith_short_8","alias_value":"IFZHGJ4N","created_at":"2026-05-18T12:29:25Z"}],"graph_snapshots":[{"event_id":"sha256:f49ac78d6b939a93bbdbb6968d685afeed6acef2680ea3c18e59ac08c377e101","target":"graph","created_at":"2026-05-18T00:35:09Z","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 re-analyse high redshift and high resolution Lyman-$\\alpha$ forest spectra considered in (Viel et al 2013), seeking to constrain the properties of warm dark matter particles. Compared to this previous work, we consider a wider range of thermal histories of the intergalactic medium. We find that both warm and cold dark matter models can explain the cut-off observed in the flux power spectra of high-resolution observations equally well. This implies, however, very different thermal histories and underlying re-ionisation models. We discuss how to remove this degeneracy.","authors_text":"Alexey Boyarsky, Antonella Garzilli, Oleg Ruchayskiy","cross_cats":["astro-ph.GA","hep-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2015-10-23T18:27:40Z","title":"Cutoff in the Lyman-$\\alpha$ forest power spectrum: warm IGM or warm dark matter?"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1510.07006","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":"sha256:53600204f3f0081ca58e883c540a4a397bd51a0c9e9dc97e60b73798da1d979e","target":"record","created_at":"2026-05-18T00:35:09Z","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":"5800d22b0924974fb3e47da1643e51a62c3d702b9e97bb211121bf6f36c04f4e","cross_cats_sorted":["astro-ph.GA","hep-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2015-10-23T18:27:40Z","title_canon_sha256":"69a0db7bd03a1c7e7d8f5c24bfcfd7167c8ebd7cfedf984db30917cf8f81956e"},"schema_version":"1.0","source":{"id":"1510.07006","kind":"arxiv","version":2}},"canonical_sha256":"417273278d90828ce7305b5043727aa0329f372b6f68fe78855c454a4ecd4e48","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"417273278d90828ce7305b5043727aa0329f372b6f68fe78855c454a4ecd4e48","first_computed_at":"2026-05-18T00:35:09.580974Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:35:09.580974Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ndk9Au/LLHffAs/0GvJZv2YTCeubr8qxoLw95LiG7+yyeOE8kdLd/kvA2mWYcczRLGRpgpQmyuHD5J2HOur8DQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:35:09.581390Z","signed_message":"canonical_sha256_bytes"},"source_id":"1510.07006","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:53600204f3f0081ca58e883c540a4a397bd51a0c9e9dc97e60b73798da1d979e","sha256:f49ac78d6b939a93bbdbb6968d685afeed6acef2680ea3c18e59ac08c377e101"],"state_sha256":"62f074d5a9773e96626da5e61a955847820f828a0339773cc13f9513c367c97c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"TN+IEMrRpyR9FlTHTLI9rlSPk24TGpsIcEZd53eZnx+ejJlT85rN5Qp74I4QCcQ8uzfAwER9+TUwOp6Jx/AWDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T10:07:20.809799Z","bundle_sha256":"9122b268c44ddadf1a8a09cc806c7d81c18bd21c62aa1ddfedd977c366ab2d5e"}}