{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2010:SOJQ4FKT7AB46Y6MTFWDBYYKOI","short_pith_number":"pith:SOJQ4FKT","canonical_record":{"source":{"id":"1007.1746","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2010-07-10T22:02:28Z","cross_cats_sorted":["astro-ph.SR","hep-ph","nucl-ex"],"title_canon_sha256":"8cf73838ec5f02c41d014592a54c5afd8871b792ade80fee2ebab44923f5aaf6","abstract_canon_sha256":"b1ab39223989ffcf9898b1ae0558f0c59854cd58f1300a86ccd95080cc34547b"},"schema_version":"1.0"},"canonical_sha256":"93930e1553f803cf63cc996c30e30a72206a5be99afd1875bbf6a2506d2ecad6","source":{"kind":"arxiv","id":"1007.1746","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1007.1746","created_at":"2026-05-18T04:38:39Z"},{"alias_kind":"arxiv_version","alias_value":"1007.1746v2","created_at":"2026-05-18T04:38:39Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1007.1746","created_at":"2026-05-18T04:38:39Z"},{"alias_kind":"pith_short_12","alias_value":"SOJQ4FKT7AB4","created_at":"2026-05-18T12:26:13Z"},{"alias_kind":"pith_short_16","alias_value":"SOJQ4FKT7AB46Y6M","created_at":"2026-05-18T12:26:13Z"},{"alias_kind":"pith_short_8","alias_value":"SOJQ4FKT","created_at":"2026-05-18T12:26:13Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2010:SOJQ4FKT7AB46Y6MTFWDBYYKOI","target":"record","payload":{"canonical_record":{"source":{"id":"1007.1746","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2010-07-10T22:02:28Z","cross_cats_sorted":["astro-ph.SR","hep-ph","nucl-ex"],"title_canon_sha256":"8cf73838ec5f02c41d014592a54c5afd8871b792ade80fee2ebab44923f5aaf6","abstract_canon_sha256":"b1ab39223989ffcf9898b1ae0558f0c59854cd58f1300a86ccd95080cc34547b"},"schema_version":"1.0"},"canonical_sha256":"93930e1553f803cf63cc996c30e30a72206a5be99afd1875bbf6a2506d2ecad6","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:38:39.833847Z","signature_b64":"U1QrhujsTROcdsNQ7gHJhx2MBu/7HfTRn80OJe511rA0BlK1YRcpaauzLWCTLlDu6DMYuPHAlP/pKHaXIv0YCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"93930e1553f803cf63cc996c30e30a72206a5be99afd1875bbf6a2506d2ecad6","last_reissued_at":"2026-05-18T04:38:39.833136Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:38:39.833136Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1007.1746","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":"2026-05-18T04:38:39Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"nipg72NKoYN8EjYd5ZjUKcMrum0Ge+R92EOi/ej3/cHdc5f1gLqmeHKntGlQYK7tYvmP6PnccB/G/fPwf9cqDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T03:18:20.784933Z"},"content_sha256":"239eb22d583a081db93d62cb34935a92c3c189842abc93d78266b30b91a07592","schema_version":"1.0","event_id":"sha256:239eb22d583a081db93d62cb34935a92c3c189842abc93d78266b30b91a07592"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2010:SOJQ4FKT7AB46Y6MTFWDBYYKOI","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Constraints on neutron star radii based on chiral effective field theory interactions","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.SR","hep-ph","nucl-ex"],"primary_cat":"nucl-th","authors_text":"A. Schwenk, C.J. Pethick, J.M. Lattimer, K. Hebeler","submitted_at":"2010-07-10T22:02:28Z","abstract_excerpt":"We show that microscopic calculations based on chiral effective field theory interactions constrain the properties of neutron-rich matter below nuclear densities to a much higher degree than is reflected in commonly used equations of state. Combined with observed neutron star masses, our results lead to a radius R = 9.7 - 13.9 km for a 1.4 M_{solar} star, where the theoretical range is due, in about equal amounts, to uncertainties in many-body forces and to the extrapolation to high densities."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1007.1746","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":"2026-05-18T04:38:39Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"KQw8a++t90X4pxWilPFPRTZlT2TV5q+aSK5MSLiOX+4tBxAvK+c5m6qXn7esJm5zI8bpPmV0nzNU9fU/7ZYuAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T03:18:20.785398Z"},"content_sha256":"16456d6ab12f890dd1615392d174e8999dbd0db304a08c0f5cc0abff52bb73b4","schema_version":"1.0","event_id":"sha256:16456d6ab12f890dd1615392d174e8999dbd0db304a08c0f5cc0abff52bb73b4"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/SOJQ4FKT7AB46Y6MTFWDBYYKOI/bundle.json","state_url":"https://pith.science/pith/SOJQ4FKT7AB46Y6MTFWDBYYKOI/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/SOJQ4FKT7AB46Y6MTFWDBYYKOI/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":"2026-05-27T03:18:20Z","links":{"resolver":"https://pith.science/pith/SOJQ4FKT7AB46Y6MTFWDBYYKOI","bundle":"https://pith.science/pith/SOJQ4FKT7AB46Y6MTFWDBYYKOI/bundle.json","state":"https://pith.science/pith/SOJQ4FKT7AB46Y6MTFWDBYYKOI/state.json","well_known_bundle":"https://pith.science/.well-known/pith/SOJQ4FKT7AB46Y6MTFWDBYYKOI/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:SOJQ4FKT7AB46Y6MTFWDBYYKOI","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":"b1ab39223989ffcf9898b1ae0558f0c59854cd58f1300a86ccd95080cc34547b","cross_cats_sorted":["astro-ph.SR","hep-ph","nucl-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2010-07-10T22:02:28Z","title_canon_sha256":"8cf73838ec5f02c41d014592a54c5afd8871b792ade80fee2ebab44923f5aaf6"},"schema_version":"1.0","source":{"id":"1007.1746","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1007.1746","created_at":"2026-05-18T04:38:39Z"},{"alias_kind":"arxiv_version","alias_value":"1007.1746v2","created_at":"2026-05-18T04:38:39Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1007.1746","created_at":"2026-05-18T04:38:39Z"},{"alias_kind":"pith_short_12","alias_value":"SOJQ4FKT7AB4","created_at":"2026-05-18T12:26:13Z"},{"alias_kind":"pith_short_16","alias_value":"SOJQ4FKT7AB46Y6M","created_at":"2026-05-18T12:26:13Z"},{"alias_kind":"pith_short_8","alias_value":"SOJQ4FKT","created_at":"2026-05-18T12:26:13Z"}],"graph_snapshots":[{"event_id":"sha256:16456d6ab12f890dd1615392d174e8999dbd0db304a08c0f5cc0abff52bb73b4","target":"graph","created_at":"2026-05-18T04:38:39Z","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 show that microscopic calculations based on chiral effective field theory interactions constrain the properties of neutron-rich matter below nuclear densities to a much higher degree than is reflected in commonly used equations of state. Combined with observed neutron star masses, our results lead to a radius R = 9.7 - 13.9 km for a 1.4 M_{solar} star, where the theoretical range is due, in about equal amounts, to uncertainties in many-body forces and to the extrapolation to high densities.","authors_text":"A. Schwenk, C.J. Pethick, J.M. Lattimer, K. Hebeler","cross_cats":["astro-ph.SR","hep-ph","nucl-ex"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2010-07-10T22:02:28Z","title":"Constraints on neutron star radii based on chiral effective field theory interactions"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1007.1746","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":"sha256:239eb22d583a081db93d62cb34935a92c3c189842abc93d78266b30b91a07592","target":"record","created_at":"2026-05-18T04:38:39Z","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":"b1ab39223989ffcf9898b1ae0558f0c59854cd58f1300a86ccd95080cc34547b","cross_cats_sorted":["astro-ph.SR","hep-ph","nucl-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2010-07-10T22:02:28Z","title_canon_sha256":"8cf73838ec5f02c41d014592a54c5afd8871b792ade80fee2ebab44923f5aaf6"},"schema_version":"1.0","source":{"id":"1007.1746","kind":"arxiv","version":2}},"canonical_sha256":"93930e1553f803cf63cc996c30e30a72206a5be99afd1875bbf6a2506d2ecad6","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"93930e1553f803cf63cc996c30e30a72206a5be99afd1875bbf6a2506d2ecad6","first_computed_at":"2026-05-18T04:38:39.833136Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:38:39.833136Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"U1QrhujsTROcdsNQ7gHJhx2MBu/7HfTRn80OJe511rA0BlK1YRcpaauzLWCTLlDu6DMYuPHAlP/pKHaXIv0YCA==","signature_status":"signed_v1","signed_at":"2026-05-18T04:38:39.833847Z","signed_message":"canonical_sha256_bytes"},"source_id":"1007.1746","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:239eb22d583a081db93d62cb34935a92c3c189842abc93d78266b30b91a07592","sha256:16456d6ab12f890dd1615392d174e8999dbd0db304a08c0f5cc0abff52bb73b4"],"state_sha256":"fe21dcb7add64a1906bffcbef259bbfc725b392b94643e7387af857b62b14806"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"t6U3xjwnPfhTAMgcVMS2RMidIQyMyLHZE8zqyul7QntA6/Oeb5Ft18OiNHtouOVaWGz4CKy/seTEoBajQRY+Bg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T03:18:20.787763Z","bundle_sha256":"de574f16ca4eff34bd0790828bf731cbab3f2e731a30c0a92665fde495516277"}}