{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:HAGO6UEUEPHYYUOYP5N2IWUQJ3","short_pith_number":"pith:HAGO6UEU","canonical_record":{"source":{"id":"1805.00135","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2018-04-30T23:51:07Z","cross_cats_sorted":[],"title_canon_sha256":"274cfffdcd2b51d2090a02babe0c9ceb94e15eb9bccc16015257dc3be3c3159e","abstract_canon_sha256":"ae938774f14ede98bef54973bf9e0ac89515ca12623af85455950f5c4ecfbc77"},"schema_version":"1.0"},"canonical_sha256":"380cef509423cf8c51d87f5ba45a904ed1b77c89f3120dcfaa8a0e20168063ce","source":{"kind":"arxiv","id":"1805.00135","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1805.00135","created_at":"2026-05-18T00:15:13Z"},{"alias_kind":"arxiv_version","alias_value":"1805.00135v1","created_at":"2026-05-18T00:15:13Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1805.00135","created_at":"2026-05-18T00:15:13Z"},{"alias_kind":"pith_short_12","alias_value":"HAGO6UEUEPHY","created_at":"2026-05-18T12:32:28Z"},{"alias_kind":"pith_short_16","alias_value":"HAGO6UEUEPHYYUOY","created_at":"2026-05-18T12:32:28Z"},{"alias_kind":"pith_short_8","alias_value":"HAGO6UEU","created_at":"2026-05-18T12:32:28Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:HAGO6UEUEPHYYUOYP5N2IWUQJ3","target":"record","payload":{"canonical_record":{"source":{"id":"1805.00135","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2018-04-30T23:51:07Z","cross_cats_sorted":[],"title_canon_sha256":"274cfffdcd2b51d2090a02babe0c9ceb94e15eb9bccc16015257dc3be3c3159e","abstract_canon_sha256":"ae938774f14ede98bef54973bf9e0ac89515ca12623af85455950f5c4ecfbc77"},"schema_version":"1.0"},"canonical_sha256":"380cef509423cf8c51d87f5ba45a904ed1b77c89f3120dcfaa8a0e20168063ce","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:15:13.762842Z","signature_b64":"sKBO3+djq7m0jP1vjQvf0aowwoSSnCtrw9Uogije00iCNPIrnmneof8VNWEJ4Ie0YZOIUnnbFORtxoq5dDsqAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"380cef509423cf8c51d87f5ba45a904ed1b77c89f3120dcfaa8a0e20168063ce","last_reissued_at":"2026-05-18T00:15:13.762216Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:15:13.762216Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1805.00135","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":"2026-05-18T00:15:13Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"lZUV5Bky7n3/xqSWsP1Gei8B6kQiSDDylEqOXgM+BGIDgKGb00hKkDedZsqaSaHFBuBzzU7Bp/TD4zKHshUIBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T00:08:19.572292Z"},"content_sha256":"770342a46550bd340999c30475618f1dcd2cb499ad75e558fa762026a5945800","schema_version":"1.0","event_id":"sha256:770342a46550bd340999c30475618f1dcd2cb499ad75e558fa762026a5945800"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:HAGO6UEUEPHYYUOYP5N2IWUQJ3","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Axions and the luminosity function of white dwarfs. The thin and thick disks, and the halo","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Enrique Garcia-Berro, Jordi Isern, Roxana Cojocaru, Santiago Torres, Silvia Catalan","submitted_at":"2018-04-30T23:51:07Z","abstract_excerpt":"The evolution of white dwarfs is a simple gravothermal process of cooling. Since the shape of their luminosity function is sensitive to the characteristic cooling time, it is possible to use its slope to test the existence of additional sources or sinks of energy, such as those predicted by alternative physical theories. The aim of this paper is to study if the changes in the slope of the white dwarf luminosity function around bolometric magnitudes ranging from 8 to 10 and previously attributed to axion emission are, effectively, a consequence of the existence of axions and not an artifact int"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1805.00135","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":"2026-05-18T00:15:13Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"HuewzMuN1lr53DDP3jBfDKiMSOykQHmKYIaz6yCurUcm4G8cThNSMGIEQNzUQPclGVe+if8l46ZekdWRKOR5BQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T00:08:19.572761Z"},"content_sha256":"dc8b6957b0a0372b1c1c94531b84d1fa1caa37236d85d44b7ace05059d7ba1b6","schema_version":"1.0","event_id":"sha256:dc8b6957b0a0372b1c1c94531b84d1fa1caa37236d85d44b7ace05059d7ba1b6"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/HAGO6UEUEPHYYUOYP5N2IWUQJ3/bundle.json","state_url":"https://pith.science/pith/HAGO6UEUEPHYYUOYP5N2IWUQJ3/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/HAGO6UEUEPHYYUOYP5N2IWUQJ3/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":"2026-05-28T00:08:19Z","links":{"resolver":"https://pith.science/pith/HAGO6UEUEPHYYUOYP5N2IWUQJ3","bundle":"https://pith.science/pith/HAGO6UEUEPHYYUOYP5N2IWUQJ3/bundle.json","state":"https://pith.science/pith/HAGO6UEUEPHYYUOYP5N2IWUQJ3/state.json","well_known_bundle":"https://pith.science/.well-known/pith/HAGO6UEUEPHYYUOYP5N2IWUQJ3/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:HAGO6UEUEPHYYUOYP5N2IWUQJ3","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":"ae938774f14ede98bef54973bf9e0ac89515ca12623af85455950f5c4ecfbc77","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2018-04-30T23:51:07Z","title_canon_sha256":"274cfffdcd2b51d2090a02babe0c9ceb94e15eb9bccc16015257dc3be3c3159e"},"schema_version":"1.0","source":{"id":"1805.00135","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1805.00135","created_at":"2026-05-18T00:15:13Z"},{"alias_kind":"arxiv_version","alias_value":"1805.00135v1","created_at":"2026-05-18T00:15:13Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1805.00135","created_at":"2026-05-18T00:15:13Z"},{"alias_kind":"pith_short_12","alias_value":"HAGO6UEUEPHY","created_at":"2026-05-18T12:32:28Z"},{"alias_kind":"pith_short_16","alias_value":"HAGO6UEUEPHYYUOY","created_at":"2026-05-18T12:32:28Z"},{"alias_kind":"pith_short_8","alias_value":"HAGO6UEU","created_at":"2026-05-18T12:32:28Z"}],"graph_snapshots":[{"event_id":"sha256:dc8b6957b0a0372b1c1c94531b84d1fa1caa37236d85d44b7ace05059d7ba1b6","target":"graph","created_at":"2026-05-18T00:15:13Z","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":"The evolution of white dwarfs is a simple gravothermal process of cooling. Since the shape of their luminosity function is sensitive to the characteristic cooling time, it is possible to use its slope to test the existence of additional sources or sinks of energy, such as those predicted by alternative physical theories. The aim of this paper is to study if the changes in the slope of the white dwarf luminosity function around bolometric magnitudes ranging from 8 to 10 and previously attributed to axion emission are, effectively, a consequence of the existence of axions and not an artifact int","authors_text":"Enrique Garcia-Berro, Jordi Isern, Roxana Cojocaru, Santiago Torres, Silvia Catalan","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2018-04-30T23:51:07Z","title":"Axions and the luminosity function of white dwarfs. The thin and thick disks, and the halo"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1805.00135","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":"sha256:770342a46550bd340999c30475618f1dcd2cb499ad75e558fa762026a5945800","target":"record","created_at":"2026-05-18T00:15:13Z","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":"ae938774f14ede98bef54973bf9e0ac89515ca12623af85455950f5c4ecfbc77","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2018-04-30T23:51:07Z","title_canon_sha256":"274cfffdcd2b51d2090a02babe0c9ceb94e15eb9bccc16015257dc3be3c3159e"},"schema_version":"1.0","source":{"id":"1805.00135","kind":"arxiv","version":1}},"canonical_sha256":"380cef509423cf8c51d87f5ba45a904ed1b77c89f3120dcfaa8a0e20168063ce","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"380cef509423cf8c51d87f5ba45a904ed1b77c89f3120dcfaa8a0e20168063ce","first_computed_at":"2026-05-18T00:15:13.762216Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:15:13.762216Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"sKBO3+djq7m0jP1vjQvf0aowwoSSnCtrw9Uogije00iCNPIrnmneof8VNWEJ4Ie0YZOIUnnbFORtxoq5dDsqAg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:15:13.762842Z","signed_message":"canonical_sha256_bytes"},"source_id":"1805.00135","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:770342a46550bd340999c30475618f1dcd2cb499ad75e558fa762026a5945800","sha256:dc8b6957b0a0372b1c1c94531b84d1fa1caa37236d85d44b7ace05059d7ba1b6"],"state_sha256":"841bf2bd3b0d24e51e676c3094f254c7594990721e1fee220bf7c1501dfc0f44"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"RPu9OnKmz8ihyBKVAZTEnJZ9vcWT0r6dr3ET+y8TnLEtTr+0HKc1KZoiLLDONxkCnoJpi5wLdiG0znF39PHJBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T00:08:19.575829Z","bundle_sha256":"d48e7310eaa516f50a998514e2ae51d5a597b896f59b768279d8ce20cdc593c2"}}