{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2011:FMVB3MGORQBC6ULPCPUCU6NUNZ","short_pith_number":"pith:FMVB3MGO","schema_version":"1.0","canonical_sha256":"2b2a1db0ce8c022f516f13e82a79b46e65b60e9cb8dcc1b118bd39c22c4f22aa","source":{"kind":"arxiv","id":"1102.2869","version":2},"attestation_state":"computed","paper":{"title":"Quark Matter In Massive Compact Stars","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ph","nucl-th"],"primary_cat":"astro-ph.HE","authors_text":"Giuseppe Pagliara, Irina Sagert, J\\\"urgen Schaffner-Bielich, Matthias Hempel, Simon Weissenborn","submitted_at":"2011-02-14T20:03:14Z","abstract_excerpt":"The recent observation of the pulsar PSR J1614-2230 with a mass of 1.97 +/- 0.04 M_sun gives a strong constraint on the quark and nuclear matter equations of state (EoS). We explore the parameter ranges for a parameterized EoS for quark stars. We find that strange stars, made of absolutely stable strange quark matter, comply with the new constraint only if effects from the strong coupling constant and color-superconductivity are taken into account. Hybrid stars, compact stars with a quark matter core and an hadronic outer layer, can be as massive as 2 M_sun, but only for a significantly limite"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1102.2869","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2011-02-14T20:03:14Z","cross_cats_sorted":["hep-ph","nucl-th"],"title_canon_sha256":"f8ed4c1b4234db3f63aa637d392c8091f1153a931aaf42c10ea9fc7e75e30868","abstract_canon_sha256":"af9ccc2215c10cec3da8c282cf87e3bc142ea965d984b31d7c1ff9dfd4b6ae35"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:11:28.815952Z","signature_b64":"kq/9NXFsHSmuTErlrbhWscpOIHxQMFu0Ls73kXrqFIr5rBXyeYqoJ9zm9AYNJuaG2Z7Goo/l2Kz1TTKNJdWFBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2b2a1db0ce8c022f516f13e82a79b46e65b60e9cb8dcc1b118bd39c22c4f22aa","last_reissued_at":"2026-05-18T04:11:28.815370Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:11:28.815370Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Quark Matter In Massive Compact Stars","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ph","nucl-th"],"primary_cat":"astro-ph.HE","authors_text":"Giuseppe Pagliara, Irina Sagert, J\\\"urgen Schaffner-Bielich, Matthias Hempel, Simon Weissenborn","submitted_at":"2011-02-14T20:03:14Z","abstract_excerpt":"The recent observation of the pulsar PSR J1614-2230 with a mass of 1.97 +/- 0.04 M_sun gives a strong constraint on the quark and nuclear matter equations of state (EoS). We explore the parameter ranges for a parameterized EoS for quark stars. We find that strange stars, made of absolutely stable strange quark matter, comply with the new constraint only if effects from the strong coupling constant and color-superconductivity are taken into account. Hybrid stars, compact stars with a quark matter core and an hadronic outer layer, can be as massive as 2 M_sun, but only for a significantly limite"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1102.2869","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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1102.2869","created_at":"2026-05-18T04:11:28.815466+00:00"},{"alias_kind":"arxiv_version","alias_value":"1102.2869v2","created_at":"2026-05-18T04:11:28.815466+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1102.2869","created_at":"2026-05-18T04:11:28.815466+00:00"},{"alias_kind":"pith_short_12","alias_value":"FMVB3MGORQBC","created_at":"2026-05-18T12:26:28.662955+00:00"},{"alias_kind":"pith_short_16","alias_value":"FMVB3MGORQBC6ULP","created_at":"2026-05-18T12:26:28.662955+00:00"},{"alias_kind":"pith_short_8","alias_value":"FMVB3MGO","created_at":"2026-05-18T12:26:28.662955+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/FMVB3MGORQBC6ULPCPUCU6NUNZ","json":"https://pith.science/pith/FMVB3MGORQBC6ULPCPUCU6NUNZ.json","graph_json":"https://pith.science/api/pith-number/FMVB3MGORQBC6ULPCPUCU6NUNZ/graph.json","events_json":"https://pith.science/api/pith-number/FMVB3MGORQBC6ULPCPUCU6NUNZ/events.json","paper":"https://pith.science/paper/FMVB3MGO"},"agent_actions":{"view_html":"https://pith.science/pith/FMVB3MGORQBC6ULPCPUCU6NUNZ","download_json":"https://pith.science/pith/FMVB3MGORQBC6ULPCPUCU6NUNZ.json","view_paper":"https://pith.science/paper/FMVB3MGO","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1102.2869&json=true","fetch_graph":"https://pith.science/api/pith-number/FMVB3MGORQBC6ULPCPUCU6NUNZ/graph.json","fetch_events":"https://pith.science/api/pith-number/FMVB3MGORQBC6ULPCPUCU6NUNZ/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/FMVB3MGORQBC6ULPCPUCU6NUNZ/action/timestamp_anchor","attest_storage":"https://pith.science/pith/FMVB3MGORQBC6ULPCPUCU6NUNZ/action/storage_attestation","attest_author":"https://pith.science/pith/FMVB3MGORQBC6ULPCPUCU6NUNZ/action/author_attestation","sign_citation":"https://pith.science/pith/FMVB3MGORQBC6ULPCPUCU6NUNZ/action/citation_signature","submit_replication":"https://pith.science/pith/FMVB3MGORQBC6ULPCPUCU6NUNZ/action/replication_record"}},"created_at":"2026-05-18T04:11:28.815466+00:00","updated_at":"2026-05-18T04:11:28.815466+00:00"}