{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:VWDZNWSAZRSQEXZCO734RFOLVU","short_pith_number":"pith:VWDZNWSA","canonical_record":{"source":{"id":"2110.14896","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"nucl-th","submitted_at":"2021-10-28T05:22:14Z","cross_cats_sorted":["astro-ph.HE"],"title_canon_sha256":"53974210b1e25481bd060f0b815128c35de81f60b755045254febeef009c2955","abstract_canon_sha256":"1381c9b9a8d5c733b79a1e74e1bb32d317eaac7e0c0c86abfd10506a7b3b1f02"},"schema_version":"1.0"},"canonical_sha256":"ad8796da40cc65025f2277f7c895cbad2a6bf3a7cf1254a42fe1f5d66db93a64","source":{"kind":"arxiv","id":"2110.14896","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2110.14896","created_at":"2026-07-05T04:09:16Z"},{"alias_kind":"arxiv_version","alias_value":"2110.14896v1","created_at":"2026-07-05T04:09:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2110.14896","created_at":"2026-07-05T04:09:16Z"},{"alias_kind":"pith_short_12","alias_value":"VWDZNWSAZRSQ","created_at":"2026-07-05T04:09:16Z"},{"alias_kind":"pith_short_16","alias_value":"VWDZNWSAZRSQEXZC","created_at":"2026-07-05T04:09:16Z"},{"alias_kind":"pith_short_8","alias_value":"VWDZNWSA","created_at":"2026-07-05T04:09:16Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:VWDZNWSAZRSQEXZCO734RFOLVU","target":"record","payload":{"canonical_record":{"source":{"id":"2110.14896","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"nucl-th","submitted_at":"2021-10-28T05:22:14Z","cross_cats_sorted":["astro-ph.HE"],"title_canon_sha256":"53974210b1e25481bd060f0b815128c35de81f60b755045254febeef009c2955","abstract_canon_sha256":"1381c9b9a8d5c733b79a1e74e1bb32d317eaac7e0c0c86abfd10506a7b3b1f02"},"schema_version":"1.0"},"canonical_sha256":"ad8796da40cc65025f2277f7c895cbad2a6bf3a7cf1254a42fe1f5d66db93a64","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T04:09:16.160414Z","signature_b64":"Ij7qiPkCDjVrSMeucOFcRkIJQujqNzLdIsMdVczDAA+vovhEKHOL6ynoyhAMy+2cTVfU5lj7qM2UQnpHOsKHBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ad8796da40cc65025f2277f7c895cbad2a6bf3a7cf1254a42fe1f5d66db93a64","last_reissued_at":"2026-07-05T04:09:16.160025Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T04:09:16.160025Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2110.14896","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":"2026-07-05T04:09:16Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/q0aYu++S+EXMFWUC5d79KjFx4wb6h6DpQ9wX0h3VkHwWPCV3rKt4Z9aTm5tIg35eEXsddAvSByjN+f4FzUhDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-01T15:53:42.067607Z"},"content_sha256":"61a526859c8db1dfbe7e2d56bb1601a6d515af9df35a7f44bcbd2f4249ff7685","schema_version":"1.0","event_id":"sha256:61a526859c8db1dfbe7e2d56bb1601a6d515af9df35a7f44bcbd2f4249ff7685"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:VWDZNWSAZRSQEXZCO734RFOLVU","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Large and massive neutron stars: Implications for the sound speed in dense QCD","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["astro-ph.HE"],"primary_cat":"nucl-th","authors_text":"Christian Drischler, Sanjay Reddy, Sophia Han","submitted_at":"2021-10-28T05:22:14Z","abstract_excerpt":"The NASA telescope NICER has recently measured x-ray emissions from the heaviest of the precisely known two-solar mass neutron stars, PSR J0740+6620. Analysis of the data [Miller et al., Astrophys. J. Lett. 918, L28 (2021); Riley et al., Astrophys. J. Lett. 918, L27 (2021)] suggests that PSR J0740+6620 has a radius in the range of $R_{2.0} \\approx (11.4-16.1)$ km at the $68\\%$ credibility level. In this article, we study the implications of this analysis for the sound speed in the high-density inner cores by using recent chiral effective field theory ($\\chi$EFT) calculations of the equation of"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2110.14896","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2110.14896/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-05T04:09:16Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"g7qR/ptZjCicx4CHUZ3L1ZgwCsMwXvmUaxLvYHqqNC0M/NdYUGVdWeuTFVONm/khxhuP4g8CuP0s3Re0cabmBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-01T15:53:42.068074Z"},"content_sha256":"feedd370f8ed87be684349122e5ae5fd07fc43ebd62366a49a85f8db3439745e","schema_version":"1.0","event_id":"sha256:feedd370f8ed87be684349122e5ae5fd07fc43ebd62366a49a85f8db3439745e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/VWDZNWSAZRSQEXZCO734RFOLVU/bundle.json","state_url":"https://pith.science/pith/VWDZNWSAZRSQEXZCO734RFOLVU/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/VWDZNWSAZRSQEXZCO734RFOLVU/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":"2026-08-01T15:53:42Z","links":{"resolver":"https://pith.science/pith/VWDZNWSAZRSQEXZCO734RFOLVU","bundle":"https://pith.science/pith/VWDZNWSAZRSQEXZCO734RFOLVU/bundle.json","state":"https://pith.science/pith/VWDZNWSAZRSQEXZCO734RFOLVU/state.json","well_known_bundle":"https://pith.science/.well-known/pith/VWDZNWSAZRSQEXZCO734RFOLVU/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:VWDZNWSAZRSQEXZCO734RFOLVU","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":"1381c9b9a8d5c733b79a1e74e1bb32d317eaac7e0c0c86abfd10506a7b3b1f02","cross_cats_sorted":["astro-ph.HE"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"nucl-th","submitted_at":"2021-10-28T05:22:14Z","title_canon_sha256":"53974210b1e25481bd060f0b815128c35de81f60b755045254febeef009c2955"},"schema_version":"1.0","source":{"id":"2110.14896","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2110.14896","created_at":"2026-07-05T04:09:16Z"},{"alias_kind":"arxiv_version","alias_value":"2110.14896v1","created_at":"2026-07-05T04:09:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2110.14896","created_at":"2026-07-05T04:09:16Z"},{"alias_kind":"pith_short_12","alias_value":"VWDZNWSAZRSQ","created_at":"2026-07-05T04:09:16Z"},{"alias_kind":"pith_short_16","alias_value":"VWDZNWSAZRSQEXZC","created_at":"2026-07-05T04:09:16Z"},{"alias_kind":"pith_short_8","alias_value":"VWDZNWSA","created_at":"2026-07-05T04:09:16Z"}],"graph_snapshots":[{"event_id":"sha256:feedd370f8ed87be684349122e5ae5fd07fc43ebd62366a49a85f8db3439745e","target":"graph","created_at":"2026-07-05T04:09:16Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2110.14896/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The NASA telescope NICER has recently measured x-ray emissions from the heaviest of the precisely known two-solar mass neutron stars, PSR J0740+6620. Analysis of the data [Miller et al., Astrophys. J. Lett. 918, L28 (2021); Riley et al., Astrophys. J. Lett. 918, L27 (2021)] suggests that PSR J0740+6620 has a radius in the range of $R_{2.0} \\approx (11.4-16.1)$ km at the $68\\%$ credibility level. In this article, we study the implications of this analysis for the sound speed in the high-density inner cores by using recent chiral effective field theory ($\\chi$EFT) calculations of the equation of","authors_text":"Christian Drischler, Sanjay Reddy, Sophia Han","cross_cats":["astro-ph.HE"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"nucl-th","submitted_at":"2021-10-28T05:22:14Z","title":"Large and massive neutron stars: Implications for the sound speed in dense QCD"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2110.14896","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":"sha256:61a526859c8db1dfbe7e2d56bb1601a6d515af9df35a7f44bcbd2f4249ff7685","target":"record","created_at":"2026-07-05T04:09:16Z","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":"1381c9b9a8d5c733b79a1e74e1bb32d317eaac7e0c0c86abfd10506a7b3b1f02","cross_cats_sorted":["astro-ph.HE"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"nucl-th","submitted_at":"2021-10-28T05:22:14Z","title_canon_sha256":"53974210b1e25481bd060f0b815128c35de81f60b755045254febeef009c2955"},"schema_version":"1.0","source":{"id":"2110.14896","kind":"arxiv","version":1}},"canonical_sha256":"ad8796da40cc65025f2277f7c895cbad2a6bf3a7cf1254a42fe1f5d66db93a64","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ad8796da40cc65025f2277f7c895cbad2a6bf3a7cf1254a42fe1f5d66db93a64","first_computed_at":"2026-07-05T04:09:16.160025Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T04:09:16.160025Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Ij7qiPkCDjVrSMeucOFcRkIJQujqNzLdIsMdVczDAA+vovhEKHOL6ynoyhAMy+2cTVfU5lj7qM2UQnpHOsKHBg==","signature_status":"signed_v1","signed_at":"2026-07-05T04:09:16.160414Z","signed_message":"canonical_sha256_bytes"},"source_id":"2110.14896","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:61a526859c8db1dfbe7e2d56bb1601a6d515af9df35a7f44bcbd2f4249ff7685","sha256:feedd370f8ed87be684349122e5ae5fd07fc43ebd62366a49a85f8db3439745e"],"state_sha256":"47735150807757184b71b9ca218d28a273d49680f4c804ce60a97359d3f5f98a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ZzG4J/Kt78aSMU3y0ibsprPc5AsEvA4rvFYZah7MZr1LKje+N0yX8agYdrmo7tOQHL0RYAd5DGlnBmP3JAQcAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-01T15:53:42.071198Z","bundle_sha256":"6eeec6942cd461fa10f6703b1389804bf9f40c87a09c89daaada2585bcf2cf23"}}