{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:FL4PZKRYLGBZM6EFUSYS2VSEA3","short_pith_number":"pith:FL4PZKRY","canonical_record":{"source":{"id":"1612.04672","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2016-12-13T13:02:11Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"a810d8aaf2908bbd61395c6dca3ded00dfdcf7610e76759a2dea0b352212e640","abstract_canon_sha256":"d6d26adc10ae06dd4e862cebc36c644584ec38d4800af16ed50f41d31d7d7b94"},"schema_version":"1.0"},"canonical_sha256":"2af8fcaa385983967885a4b12d564406f2a2108f5d74af9383ffe32fd035b236","source":{"kind":"arxiv","id":"1612.04672","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1612.04672","created_at":"2026-05-18T00:54:58Z"},{"alias_kind":"arxiv_version","alias_value":"1612.04672v1","created_at":"2026-05-18T00:54:58Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1612.04672","created_at":"2026-05-18T00:54:58Z"},{"alias_kind":"pith_short_12","alias_value":"FL4PZKRYLGBZ","created_at":"2026-05-18T12:30:15Z"},{"alias_kind":"pith_short_16","alias_value":"FL4PZKRYLGBZM6EF","created_at":"2026-05-18T12:30:15Z"},{"alias_kind":"pith_short_8","alias_value":"FL4PZKRY","created_at":"2026-05-18T12:30:15Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:FL4PZKRYLGBZM6EFUSYS2VSEA3","target":"record","payload":{"canonical_record":{"source":{"id":"1612.04672","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2016-12-13T13:02:11Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"a810d8aaf2908bbd61395c6dca3ded00dfdcf7610e76759a2dea0b352212e640","abstract_canon_sha256":"d6d26adc10ae06dd4e862cebc36c644584ec38d4800af16ed50f41d31d7d7b94"},"schema_version":"1.0"},"canonical_sha256":"2af8fcaa385983967885a4b12d564406f2a2108f5d74af9383ffe32fd035b236","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:54:58.865014Z","signature_b64":"GCCM88vclHEnSz40m66dJWUM4DPHkhCV/9VZludDLLrZF2N7+U9x/Mk0KdvGRnKDrtJmzLvip2Ip+vIZ16xbCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2af8fcaa385983967885a4b12d564406f2a2108f5d74af9383ffe32fd035b236","last_reissued_at":"2026-05-18T00:54:58.864372Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:54:58.864372Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1612.04672","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":"2026-05-18T00:54:58Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"EYyRrFDHy4hLGi4MYJDazMBktXsdlhuJdIq6EzulxVfeqepm9Vda609d2DEXOQyM48ul/1I3ssT3yuHQ9GaFAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T21:42:31.823298Z"},"content_sha256":"4823b85f34c5fe237bdb3ec8154d4b05db02b3a45f1a66c32c3ed5d93b3f9357","schema_version":"1.0","event_id":"sha256:4823b85f34c5fe237bdb3ec8154d4b05db02b3a45f1a66c32c3ed5d93b3f9357"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:FL4PZKRYLGBZM6EFUSYS2VSEA3","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Analytic approximations of neutrino luminosities and heat capacities of neutron stars with nucleon cores","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.HE","authors_text":"D. D. Ofengeim, D. G. Yakovlev, J. L. Zdunik, M. Fortin, P. Haensel","submitted_at":"2016-12-13T13:02:11Z","abstract_excerpt":"We derive analytic approximations of neutrino luminosities and heat capacities of neutron stars with nucleon cores valid for a wide class of equations of state of dense nucleon matter. The neutrino luminosities are approximated for the three cases in which they are produced by (i) direct Urca or (ii) modified Urca processes in non-superfluid matter, or (iii) neutrino-pair bremsstrahlung in neutron-neutron collisions (when other neutrino reactions are suppressed by strong proton superfluidity). The heat capacity is approximated for the two cases of (i) non-superfluid cores and (ii) the cores wi"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1612.04672","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":"2026-05-18T00:54:58Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"jZ62om5P4mS/OdpCwNT6kcYjw507OTKp/73gRL33AIFxbd9WczXlKFjWT5LPQtcui1kSZKI9CPr/Id6F2FliBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T21:42:31.824000Z"},"content_sha256":"56abfcacb4ba1e3f91ea7f29e74185b4ef36471da345eb9346413b88c7894086","schema_version":"1.0","event_id":"sha256:56abfcacb4ba1e3f91ea7f29e74185b4ef36471da345eb9346413b88c7894086"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/FL4PZKRYLGBZM6EFUSYS2VSEA3/bundle.json","state_url":"https://pith.science/pith/FL4PZKRYLGBZM6EFUSYS2VSEA3/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/FL4PZKRYLGBZM6EFUSYS2VSEA3/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":"2026-05-27T21:42:31Z","links":{"resolver":"https://pith.science/pith/FL4PZKRYLGBZM6EFUSYS2VSEA3","bundle":"https://pith.science/pith/FL4PZKRYLGBZM6EFUSYS2VSEA3/bundle.json","state":"https://pith.science/pith/FL4PZKRYLGBZM6EFUSYS2VSEA3/state.json","well_known_bundle":"https://pith.science/.well-known/pith/FL4PZKRYLGBZM6EFUSYS2VSEA3/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:FL4PZKRYLGBZM6EFUSYS2VSEA3","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":"d6d26adc10ae06dd4e862cebc36c644584ec38d4800af16ed50f41d31d7d7b94","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2016-12-13T13:02:11Z","title_canon_sha256":"a810d8aaf2908bbd61395c6dca3ded00dfdcf7610e76759a2dea0b352212e640"},"schema_version":"1.0","source":{"id":"1612.04672","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1612.04672","created_at":"2026-05-18T00:54:58Z"},{"alias_kind":"arxiv_version","alias_value":"1612.04672v1","created_at":"2026-05-18T00:54:58Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1612.04672","created_at":"2026-05-18T00:54:58Z"},{"alias_kind":"pith_short_12","alias_value":"FL4PZKRYLGBZ","created_at":"2026-05-18T12:30:15Z"},{"alias_kind":"pith_short_16","alias_value":"FL4PZKRYLGBZM6EF","created_at":"2026-05-18T12:30:15Z"},{"alias_kind":"pith_short_8","alias_value":"FL4PZKRY","created_at":"2026-05-18T12:30:15Z"}],"graph_snapshots":[{"event_id":"sha256:56abfcacb4ba1e3f91ea7f29e74185b4ef36471da345eb9346413b88c7894086","target":"graph","created_at":"2026-05-18T00:54:58Z","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 derive analytic approximations of neutrino luminosities and heat capacities of neutron stars with nucleon cores valid for a wide class of equations of state of dense nucleon matter. The neutrino luminosities are approximated for the three cases in which they are produced by (i) direct Urca or (ii) modified Urca processes in non-superfluid matter, or (iii) neutrino-pair bremsstrahlung in neutron-neutron collisions (when other neutrino reactions are suppressed by strong proton superfluidity). The heat capacity is approximated for the two cases of (i) non-superfluid cores and (ii) the cores wi","authors_text":"D. D. Ofengeim, D. G. Yakovlev, J. L. Zdunik, M. Fortin, P. Haensel","cross_cats":["astro-ph.SR"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2016-12-13T13:02:11Z","title":"Analytic approximations of neutrino luminosities and heat capacities of neutron stars with nucleon cores"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1612.04672","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":"sha256:4823b85f34c5fe237bdb3ec8154d4b05db02b3a45f1a66c32c3ed5d93b3f9357","target":"record","created_at":"2026-05-18T00:54:58Z","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":"d6d26adc10ae06dd4e862cebc36c644584ec38d4800af16ed50f41d31d7d7b94","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2016-12-13T13:02:11Z","title_canon_sha256":"a810d8aaf2908bbd61395c6dca3ded00dfdcf7610e76759a2dea0b352212e640"},"schema_version":"1.0","source":{"id":"1612.04672","kind":"arxiv","version":1}},"canonical_sha256":"2af8fcaa385983967885a4b12d564406f2a2108f5d74af9383ffe32fd035b236","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2af8fcaa385983967885a4b12d564406f2a2108f5d74af9383ffe32fd035b236","first_computed_at":"2026-05-18T00:54:58.864372Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:54:58.864372Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"GCCM88vclHEnSz40m66dJWUM4DPHkhCV/9VZludDLLrZF2N7+U9x/Mk0KdvGRnKDrtJmzLvip2Ip+vIZ16xbCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:54:58.865014Z","signed_message":"canonical_sha256_bytes"},"source_id":"1612.04672","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4823b85f34c5fe237bdb3ec8154d4b05db02b3a45f1a66c32c3ed5d93b3f9357","sha256:56abfcacb4ba1e3f91ea7f29e74185b4ef36471da345eb9346413b88c7894086"],"state_sha256":"ab2242233900e53137b48e90b4bb93cdce8fa040cda7722d6e9f94591c4a27ec"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"CPdZQaLu6CJJKjzR1Klm8ejMNMdeBQZ8cZ/aBuoXY0kpPl9IJgDEo8fJfG5qJcpQ34zCLInU+Bd/Xxi87aRsAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T21:42:31.827707Z","bundle_sha256":"ca4f00003b5d3b5309be8bb1287b9e70f36fe5bc7d0b0b01ff8ccf936a703207"}}