{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:H2HSYK74NJ74E7KWFYPPSSES6G","short_pith_number":"pith:H2HSYK74","canonical_record":{"source":{"id":"1301.5330","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-01-22T21:05:38Z","cross_cats_sorted":[],"title_canon_sha256":"ec800e55ee247ea30fb627aedc857a04aa08ecd8778d2a0c28ee225f28342ae8","abstract_canon_sha256":"88e8c2561a8c54a1339bcd0bc0f7f6e5f3c9d1031c004146462a60728569744b"},"schema_version":"1.0"},"canonical_sha256":"3e8f2c2bfc6a7fc27d562e1ef94892f1ac053f5b41538eb28bd23f1cc3c93a63","source":{"kind":"arxiv","id":"1301.5330","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1301.5330","created_at":"2026-05-18T01:52:04Z"},{"alias_kind":"arxiv_version","alias_value":"1301.5330v1","created_at":"2026-05-18T01:52:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1301.5330","created_at":"2026-05-18T01:52:04Z"},{"alias_kind":"pith_short_12","alias_value":"H2HSYK74NJ74","created_at":"2026-05-18T12:27:46Z"},{"alias_kind":"pith_short_16","alias_value":"H2HSYK74NJ74E7KW","created_at":"2026-05-18T12:27:46Z"},{"alias_kind":"pith_short_8","alias_value":"H2HSYK74","created_at":"2026-05-18T12:27:46Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:H2HSYK74NJ74E7KWFYPPSSES6G","target":"record","payload":{"canonical_record":{"source":{"id":"1301.5330","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-01-22T21:05:38Z","cross_cats_sorted":[],"title_canon_sha256":"ec800e55ee247ea30fb627aedc857a04aa08ecd8778d2a0c28ee225f28342ae8","abstract_canon_sha256":"88e8c2561a8c54a1339bcd0bc0f7f6e5f3c9d1031c004146462a60728569744b"},"schema_version":"1.0"},"canonical_sha256":"3e8f2c2bfc6a7fc27d562e1ef94892f1ac053f5b41538eb28bd23f1cc3c93a63","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:52:04.513650Z","signature_b64":"EnN0xkKVS8gjxW59mxhcHUjViRKTgg3+vvaK1b1seJktlwqfjs+OFmR4Qs6fot1rP2Sk/bkZJXx+hZunYYshDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3e8f2c2bfc6a7fc27d562e1ef94892f1ac053f5b41538eb28bd23f1cc3c93a63","last_reissued_at":"2026-05-18T01:52:04.513213Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:52:04.513213Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1301.5330","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":"2026-05-18T01:52:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1TAelH3mfpYHk5Ssrevv+o/n0dQS4yeiBh+EDqbq4sRPU9A/IvgUNiWyQN6sy3e3QBofWvA7C9DkSi1AvolTBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-28T10:20:18.802954Z"},"content_sha256":"1f7df18e6828043abd4043ee725b5761421637d6ac64069117c89508eb48a5e5","schema_version":"1.0","event_id":"sha256:1f7df18e6828043abd4043ee725b5761421637d6ac64069117c89508eb48a5e5"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:H2HSYK74NJ74E7KWFYPPSSES6G","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"How the diffuse Universe cools","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"Anthony Aguirre (UCSC), Joop Schaye (Leiden Observatory), Serena Bertone (ESA/Aviospace)","submitted_at":"2013-01-22T21:05:38Z","abstract_excerpt":"In this work we investigate the cooling channels of diffuse gas (i.e. n_H<0.1 cm^-3) in cosmology. We aim to identify the wavelengths where most of the energy is radiated in the form of emission lines or continuum radiation, and the main elements and ions responsible for the emission. We use a subset of cosmological, hydrodynamical runs from the OWLS project to calculate the emission of diffuse gas and its evolution with time. We find that at z=0 (z=2) about 70 (80) per cent of the energy emitted by diffuse gas is carried by emission lines, with the continuum radiation contributing the remaind"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1301.5330","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":"2026-05-18T01:52:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"7rHHMfimkdNL5kdm02qX7bS9UIBMfxURwRwuxulRZ7umvPaUglRWwlKxeKiCFrGDQSjoXU4QibUv0aly1o9PBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-28T10:20:18.803295Z"},"content_sha256":"2ec13867076bd133cda0d2a77981baf440793323f5ff0a7ed8560cb6f0fe3f7a","schema_version":"1.0","event_id":"sha256:2ec13867076bd133cda0d2a77981baf440793323f5ff0a7ed8560cb6f0fe3f7a"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/H2HSYK74NJ74E7KWFYPPSSES6G/bundle.json","state_url":"https://pith.science/pith/H2HSYK74NJ74E7KWFYPPSSES6G/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/H2HSYK74NJ74E7KWFYPPSSES6G/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":"2026-06-28T10:20:18Z","links":{"resolver":"https://pith.science/pith/H2HSYK74NJ74E7KWFYPPSSES6G","bundle":"https://pith.science/pith/H2HSYK74NJ74E7KWFYPPSSES6G/bundle.json","state":"https://pith.science/pith/H2HSYK74NJ74E7KWFYPPSSES6G/state.json","well_known_bundle":"https://pith.science/.well-known/pith/H2HSYK74NJ74E7KWFYPPSSES6G/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:H2HSYK74NJ74E7KWFYPPSSES6G","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":"88e8c2561a8c54a1339bcd0bc0f7f6e5f3c9d1031c004146462a60728569744b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-01-22T21:05:38Z","title_canon_sha256":"ec800e55ee247ea30fb627aedc857a04aa08ecd8778d2a0c28ee225f28342ae8"},"schema_version":"1.0","source":{"id":"1301.5330","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1301.5330","created_at":"2026-05-18T01:52:04Z"},{"alias_kind":"arxiv_version","alias_value":"1301.5330v1","created_at":"2026-05-18T01:52:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1301.5330","created_at":"2026-05-18T01:52:04Z"},{"alias_kind":"pith_short_12","alias_value":"H2HSYK74NJ74","created_at":"2026-05-18T12:27:46Z"},{"alias_kind":"pith_short_16","alias_value":"H2HSYK74NJ74E7KW","created_at":"2026-05-18T12:27:46Z"},{"alias_kind":"pith_short_8","alias_value":"H2HSYK74","created_at":"2026-05-18T12:27:46Z"}],"graph_snapshots":[{"event_id":"sha256:2ec13867076bd133cda0d2a77981baf440793323f5ff0a7ed8560cb6f0fe3f7a","target":"graph","created_at":"2026-05-18T01:52:04Z","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 this work we investigate the cooling channels of diffuse gas (i.e. n_H<0.1 cm^-3) in cosmology. We aim to identify the wavelengths where most of the energy is radiated in the form of emission lines or continuum radiation, and the main elements and ions responsible for the emission. We use a subset of cosmological, hydrodynamical runs from the OWLS project to calculate the emission of diffuse gas and its evolution with time. We find that at z=0 (z=2) about 70 (80) per cent of the energy emitted by diffuse gas is carried by emission lines, with the continuum radiation contributing the remaind","authors_text":"Anthony Aguirre (UCSC), Joop Schaye (Leiden Observatory), Serena Bertone (ESA/Aviospace)","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-01-22T21:05:38Z","title":"How the diffuse Universe cools"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1301.5330","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":"sha256:1f7df18e6828043abd4043ee725b5761421637d6ac64069117c89508eb48a5e5","target":"record","created_at":"2026-05-18T01:52:04Z","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":"88e8c2561a8c54a1339bcd0bc0f7f6e5f3c9d1031c004146462a60728569744b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-01-22T21:05:38Z","title_canon_sha256":"ec800e55ee247ea30fb627aedc857a04aa08ecd8778d2a0c28ee225f28342ae8"},"schema_version":"1.0","source":{"id":"1301.5330","kind":"arxiv","version":1}},"canonical_sha256":"3e8f2c2bfc6a7fc27d562e1ef94892f1ac053f5b41538eb28bd23f1cc3c93a63","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3e8f2c2bfc6a7fc27d562e1ef94892f1ac053f5b41538eb28bd23f1cc3c93a63","first_computed_at":"2026-05-18T01:52:04.513213Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:52:04.513213Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"EnN0xkKVS8gjxW59mxhcHUjViRKTgg3+vvaK1b1seJktlwqfjs+OFmR4Qs6fot1rP2Sk/bkZJXx+hZunYYshDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:52:04.513650Z","signed_message":"canonical_sha256_bytes"},"source_id":"1301.5330","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1f7df18e6828043abd4043ee725b5761421637d6ac64069117c89508eb48a5e5","sha256:2ec13867076bd133cda0d2a77981baf440793323f5ff0a7ed8560cb6f0fe3f7a"],"state_sha256":"39c0af1484681c02eccbbd4809e0154af1597f07d7d76ba1fcb9a08684de5766"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"NSmBEjHuysGfg3erG0MB+VdeL4HNSBIFEO3kvfHIiB/GeggmnL4GlFCg2qOkvzeIcMPblfAKNRNxo3tFVGiaCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-28T10:20:18.805194Z","bundle_sha256":"91214ff0edae0c78a056c95a6e96abb3a59e7b7d1f6b94707f03627de952f566"}}