{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:EIL75NXVTS66UD6YKC6FY453XC","short_pith_number":"pith:EIL75NXV","canonical_record":{"source":{"id":"1701.05646","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2017-01-20T00:05:09Z","cross_cats_sorted":["nucl-th"],"title_canon_sha256":"e6630194e0b024d4f067b32835b8e9e6b0efb19124db0368182d8c91de0a95c0","abstract_canon_sha256":"c02c5041e1007789e4785dc98c2c85a239fff88b5a03bc5ae02bce64d08ec8a9"},"schema_version":"1.0"},"canonical_sha256":"2217feb6f59cbdea0fd850bc5c73bbb888b4f0e2085df5bc9cb4f94b60cbe593","source":{"kind":"arxiv","id":"1701.05646","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1701.05646","created_at":"2026-05-18T00:49:09Z"},{"alias_kind":"arxiv_version","alias_value":"1701.05646v1","created_at":"2026-05-18T00:49:09Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1701.05646","created_at":"2026-05-18T00:49:09Z"},{"alias_kind":"pith_short_12","alias_value":"EIL75NXVTS66","created_at":"2026-05-18T12:31:12Z"},{"alias_kind":"pith_short_16","alias_value":"EIL75NXVTS66UD6Y","created_at":"2026-05-18T12:31:12Z"},{"alias_kind":"pith_short_8","alias_value":"EIL75NXV","created_at":"2026-05-18T12:31:12Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:EIL75NXVTS66UD6YKC6FY453XC","target":"record","payload":{"canonical_record":{"source":{"id":"1701.05646","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2017-01-20T00:05:09Z","cross_cats_sorted":["nucl-th"],"title_canon_sha256":"e6630194e0b024d4f067b32835b8e9e6b0efb19124db0368182d8c91de0a95c0","abstract_canon_sha256":"c02c5041e1007789e4785dc98c2c85a239fff88b5a03bc5ae02bce64d08ec8a9"},"schema_version":"1.0"},"canonical_sha256":"2217feb6f59cbdea0fd850bc5c73bbb888b4f0e2085df5bc9cb4f94b60cbe593","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:49:09.710263Z","signature_b64":"T7ZVdgR92SkaS1zy22j/T0pPLl5ViWMsqx2VIagSnoz+Uu5Jvx1jkf6BR2/xtUlYNEOuFdZ20SdmUDpeInASCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2217feb6f59cbdea0fd850bc5c73bbb888b4f0e2085df5bc9cb4f94b60cbe593","last_reissued_at":"2026-05-18T00:49:09.709653Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:49:09.709653Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1701.05646","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":"2026-05-18T00:49:09Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"CvxUtAK7jneXppFjB2mpaDf8OW1zw3PmGh/jnnbCtwoWj63T9ErBdG4LSdhZmP1Dpmun4/I8WHN5XK14PLgsBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T10:00:21.216171Z"},"content_sha256":"86255ec46fc429bbb66843da534b1b3919d0f2ccf24195cb9d6ba19fafe521fa","schema_version":"1.0","event_id":"sha256:86255ec46fc429bbb66843da534b1b3919d0f2ccf24195cb9d6ba19fafe521fa"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:EIL75NXVTS66UD6YKC6FY453XC","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Effect of nuclear saturation parameters on possible maximum mass of neutron stars","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["nucl-th"],"primary_cat":"astro-ph.HE","authors_text":"Hajime Sotani","submitted_at":"2017-01-20T00:05:09Z","abstract_excerpt":"In order to systematically examine the possible maximum mass of neutron stars, which is one of the important properties characterizing the physics in high-density region, I construct neutron star models by adopting phenomenological equations of state with various values of nuclear saturation parameters for low-density region, which are connected to the equation of state for high-density region characterized by the possible maximum sound velocity in medium. I derive an empirical formula for the possible maximum mass of neutron star. If massive neutron stars are observed, it could be possible to"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1701.05646","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":"2026-05-18T00:49:09Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"wknefJoGZXskgJlKL4vw9n8zN2NaIvixWdWMDbz38pz0lG5QSGY69WOgFdzAKGM/dM8vK1XJ2JvS3w3lfS86BQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T10:00:21.216869Z"},"content_sha256":"79a2603e54386846040f647a8991ad3237187dcd308cc4132a413b5251e92e9b","schema_version":"1.0","event_id":"sha256:79a2603e54386846040f647a8991ad3237187dcd308cc4132a413b5251e92e9b"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/EIL75NXVTS66UD6YKC6FY453XC/bundle.json","state_url":"https://pith.science/pith/EIL75NXVTS66UD6YKC6FY453XC/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/EIL75NXVTS66UD6YKC6FY453XC/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":"2026-05-26T10:00:21Z","links":{"resolver":"https://pith.science/pith/EIL75NXVTS66UD6YKC6FY453XC","bundle":"https://pith.science/pith/EIL75NXVTS66UD6YKC6FY453XC/bundle.json","state":"https://pith.science/pith/EIL75NXVTS66UD6YKC6FY453XC/state.json","well_known_bundle":"https://pith.science/.well-known/pith/EIL75NXVTS66UD6YKC6FY453XC/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:EIL75NXVTS66UD6YKC6FY453XC","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":"c02c5041e1007789e4785dc98c2c85a239fff88b5a03bc5ae02bce64d08ec8a9","cross_cats_sorted":["nucl-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2017-01-20T00:05:09Z","title_canon_sha256":"e6630194e0b024d4f067b32835b8e9e6b0efb19124db0368182d8c91de0a95c0"},"schema_version":"1.0","source":{"id":"1701.05646","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1701.05646","created_at":"2026-05-18T00:49:09Z"},{"alias_kind":"arxiv_version","alias_value":"1701.05646v1","created_at":"2026-05-18T00:49:09Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1701.05646","created_at":"2026-05-18T00:49:09Z"},{"alias_kind":"pith_short_12","alias_value":"EIL75NXVTS66","created_at":"2026-05-18T12:31:12Z"},{"alias_kind":"pith_short_16","alias_value":"EIL75NXVTS66UD6Y","created_at":"2026-05-18T12:31:12Z"},{"alias_kind":"pith_short_8","alias_value":"EIL75NXV","created_at":"2026-05-18T12:31:12Z"}],"graph_snapshots":[{"event_id":"sha256:79a2603e54386846040f647a8991ad3237187dcd308cc4132a413b5251e92e9b","target":"graph","created_at":"2026-05-18T00:49:09Z","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":"In order to systematically examine the possible maximum mass of neutron stars, which is one of the important properties characterizing the physics in high-density region, I construct neutron star models by adopting phenomenological equations of state with various values of nuclear saturation parameters for low-density region, which are connected to the equation of state for high-density region characterized by the possible maximum sound velocity in medium. I derive an empirical formula for the possible maximum mass of neutron star. If massive neutron stars are observed, it could be possible to","authors_text":"Hajime Sotani","cross_cats":["nucl-th"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2017-01-20T00:05:09Z","title":"Effect of nuclear saturation parameters on possible maximum mass of neutron stars"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1701.05646","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":"sha256:86255ec46fc429bbb66843da534b1b3919d0f2ccf24195cb9d6ba19fafe521fa","target":"record","created_at":"2026-05-18T00:49:09Z","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":"c02c5041e1007789e4785dc98c2c85a239fff88b5a03bc5ae02bce64d08ec8a9","cross_cats_sorted":["nucl-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2017-01-20T00:05:09Z","title_canon_sha256":"e6630194e0b024d4f067b32835b8e9e6b0efb19124db0368182d8c91de0a95c0"},"schema_version":"1.0","source":{"id":"1701.05646","kind":"arxiv","version":1}},"canonical_sha256":"2217feb6f59cbdea0fd850bc5c73bbb888b4f0e2085df5bc9cb4f94b60cbe593","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2217feb6f59cbdea0fd850bc5c73bbb888b4f0e2085df5bc9cb4f94b60cbe593","first_computed_at":"2026-05-18T00:49:09.709653Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:49:09.709653Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"T7ZVdgR92SkaS1zy22j/T0pPLl5ViWMsqx2VIagSnoz+Uu5Jvx1jkf6BR2/xtUlYNEOuFdZ20SdmUDpeInASCg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:49:09.710263Z","signed_message":"canonical_sha256_bytes"},"source_id":"1701.05646","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:86255ec46fc429bbb66843da534b1b3919d0f2ccf24195cb9d6ba19fafe521fa","sha256:79a2603e54386846040f647a8991ad3237187dcd308cc4132a413b5251e92e9b"],"state_sha256":"def3770493045f15f0b0cdb244fbee4ff590d213d1c636bb599d1a886447cf7e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"IhcVE2sdN+NlusryyU7tcWPSAsilrVFeYji+3Dhd9ohA20jjUJdY50mX3/QaRF553u9F9utg0kBXLhSKcFx+DQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T10:00:21.219690Z","bundle_sha256":"6d575f69ce7ccde4530bf05548d4746d63b0fc22c6d8b6b06d3afb83d62d8429"}}