{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:YIRIEK4E2MPR3QJZMUOUNO35XB","short_pith_number":"pith:YIRIEK4E","canonical_record":{"source":{"id":"2109.01149","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2021-09-02T18:00:03Z","cross_cats_sorted":["astro-ph.HE","hep-th"],"title_canon_sha256":"11211a88a2657e82ebacb05a237c0da7ac18b852185c9ba70ede368130baf20c","abstract_canon_sha256":"49ad8d3a80f5030340a6ab4a85e73f05fa5cf4eeb34f37731ee0e819d4fa32e1"},"schema_version":"1.0"},"canonical_sha256":"c222822b84d31f1dc139651d46bb7db8738066c70c5f27703e31bce7397f6dab","source":{"kind":"arxiv","id":"2109.01149","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2109.01149","created_at":"2026-07-05T04:00:56Z"},{"alias_kind":"arxiv_version","alias_value":"2109.01149v2","created_at":"2026-07-05T04:00:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2109.01149","created_at":"2026-07-05T04:00:56Z"},{"alias_kind":"pith_short_12","alias_value":"YIRIEK4E2MPR","created_at":"2026-07-05T04:00:56Z"},{"alias_kind":"pith_short_16","alias_value":"YIRIEK4E2MPR3QJZ","created_at":"2026-07-05T04:00:56Z"},{"alias_kind":"pith_short_8","alias_value":"YIRIEK4E","created_at":"2026-07-05T04:00:56Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:YIRIEK4E2MPR3QJZMUOUNO35XB","target":"record","payload":{"canonical_record":{"source":{"id":"2109.01149","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2021-09-02T18:00:03Z","cross_cats_sorted":["astro-ph.HE","hep-th"],"title_canon_sha256":"11211a88a2657e82ebacb05a237c0da7ac18b852185c9ba70ede368130baf20c","abstract_canon_sha256":"49ad8d3a80f5030340a6ab4a85e73f05fa5cf4eeb34f37731ee0e819d4fa32e1"},"schema_version":"1.0"},"canonical_sha256":"c222822b84d31f1dc139651d46bb7db8738066c70c5f27703e31bce7397f6dab","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T04:00:56.722131Z","signature_b64":"uFZZj4jZRS36iJSdHXOilYl8MC6T3lbZWBgEsUmDIVSU4WSARykEe2Vwbcbne/UpjUA+wxMZT8wZGdHJknslAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c222822b84d31f1dc139651d46bb7db8738066c70c5f27703e31bce7397f6dab","last_reissued_at":"2026-07-05T04:00:56.721646Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T04:00:56.721646Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2109.01149","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":"2026-07-05T04:00:56Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"EhageOh1CTn2zFDQdKoTYGgr8mizm+ZH6ErYdbRJEF3RLhavd8DNlF0Nwvh2gd6T4M212aB7HSg2AVk3n+wBBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-17T02:51:03.624506Z"},"content_sha256":"892cb9b0172d4897e5bc429c4e0727eeb50036971b693ece072c053e0ebaae03","schema_version":"1.0","event_id":"sha256:892cb9b0172d4897e5bc429c4e0727eeb50036971b693ece072c053e0ebaae03"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:YIRIEK4E2MPR3QJZMUOUNO35XB","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Astrophysical constraints on compact objects in 4D Einstein-Gauss-Bonnet gravity","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.HE","hep-th"],"primary_cat":"gr-qc","authors_text":"Antoine Leh\\'ebel, Christos Charmousis, Evangelos Smyrniotis, Nikolaos Stergioulas","submitted_at":"2021-09-02T18:00:03Z","abstract_excerpt":"We study the properties of compact objects in a particular 4D Horndeski theory originating from higher dimensional Einstein-Gauss-Bonnet gravity. Remarkably, an exact vacuum solution is known. This compact object differs from general relativity mostly in the strong field regime. We discuss some properties of black holes in this framework and investigate in detail the properties of neutron stars, both static and in slow rotation. We find that for relatively modest deviations from general relativity, the secondary object in GW190814 is compatible with being a slowly-rotating neutron star, withou"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2109.01149","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2109.01149/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":"2026-07-05T04:00:56Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"KA6MQ9dAlO2Gm7qu87R6cSEe0+wjkNXLvoNrjuO1smOepZdRqMlYTf9EFe7ZtSXrnjneCJsIbyQBHlSwTBkwAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-17T02:51:03.625094Z"},"content_sha256":"a332e72ea2c8bab5b5060726aa7c6222b1c8aa3864a02b6907d1538347dad12c","schema_version":"1.0","event_id":"sha256:a332e72ea2c8bab5b5060726aa7c6222b1c8aa3864a02b6907d1538347dad12c"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/YIRIEK4E2MPR3QJZMUOUNO35XB/bundle.json","state_url":"https://pith.science/pith/YIRIEK4E2MPR3QJZMUOUNO35XB/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/YIRIEK4E2MPR3QJZMUOUNO35XB/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":"2026-08-17T02:51:03Z","links":{"resolver":"https://pith.science/pith/YIRIEK4E2MPR3QJZMUOUNO35XB","bundle":"https://pith.science/pith/YIRIEK4E2MPR3QJZMUOUNO35XB/bundle.json","state":"https://pith.science/pith/YIRIEK4E2MPR3QJZMUOUNO35XB/state.json","well_known_bundle":"https://pith.science/.well-known/pith/YIRIEK4E2MPR3QJZMUOUNO35XB/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:YIRIEK4E2MPR3QJZMUOUNO35XB","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":"49ad8d3a80f5030340a6ab4a85e73f05fa5cf4eeb34f37731ee0e819d4fa32e1","cross_cats_sorted":["astro-ph.HE","hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2021-09-02T18:00:03Z","title_canon_sha256":"11211a88a2657e82ebacb05a237c0da7ac18b852185c9ba70ede368130baf20c"},"schema_version":"1.0","source":{"id":"2109.01149","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2109.01149","created_at":"2026-07-05T04:00:56Z"},{"alias_kind":"arxiv_version","alias_value":"2109.01149v2","created_at":"2026-07-05T04:00:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2109.01149","created_at":"2026-07-05T04:00:56Z"},{"alias_kind":"pith_short_12","alias_value":"YIRIEK4E2MPR","created_at":"2026-07-05T04:00:56Z"},{"alias_kind":"pith_short_16","alias_value":"YIRIEK4E2MPR3QJZ","created_at":"2026-07-05T04:00:56Z"},{"alias_kind":"pith_short_8","alias_value":"YIRIEK4E","created_at":"2026-07-05T04:00:56Z"}],"graph_snapshots":[{"event_id":"sha256:a332e72ea2c8bab5b5060726aa7c6222b1c8aa3864a02b6907d1538347dad12c","target":"graph","created_at":"2026-07-05T04:00:56Z","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/2109.01149/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We study the properties of compact objects in a particular 4D Horndeski theory originating from higher dimensional Einstein-Gauss-Bonnet gravity. Remarkably, an exact vacuum solution is known. This compact object differs from general relativity mostly in the strong field regime. We discuss some properties of black holes in this framework and investigate in detail the properties of neutron stars, both static and in slow rotation. We find that for relatively modest deviations from general relativity, the secondary object in GW190814 is compatible with being a slowly-rotating neutron star, withou","authors_text":"Antoine Leh\\'ebel, Christos Charmousis, Evangelos Smyrniotis, Nikolaos Stergioulas","cross_cats":["astro-ph.HE","hep-th"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2021-09-02T18:00:03Z","title":"Astrophysical constraints on compact objects in 4D Einstein-Gauss-Bonnet gravity"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2109.01149","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":"sha256:892cb9b0172d4897e5bc429c4e0727eeb50036971b693ece072c053e0ebaae03","target":"record","created_at":"2026-07-05T04:00:56Z","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":"49ad8d3a80f5030340a6ab4a85e73f05fa5cf4eeb34f37731ee0e819d4fa32e1","cross_cats_sorted":["astro-ph.HE","hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2021-09-02T18:00:03Z","title_canon_sha256":"11211a88a2657e82ebacb05a237c0da7ac18b852185c9ba70ede368130baf20c"},"schema_version":"1.0","source":{"id":"2109.01149","kind":"arxiv","version":2}},"canonical_sha256":"c222822b84d31f1dc139651d46bb7db8738066c70c5f27703e31bce7397f6dab","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c222822b84d31f1dc139651d46bb7db8738066c70c5f27703e31bce7397f6dab","first_computed_at":"2026-07-05T04:00:56.721646Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T04:00:56.721646Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"uFZZj4jZRS36iJSdHXOilYl8MC6T3lbZWBgEsUmDIVSU4WSARykEe2Vwbcbne/UpjUA+wxMZT8wZGdHJknslAg==","signature_status":"signed_v1","signed_at":"2026-07-05T04:00:56.722131Z","signed_message":"canonical_sha256_bytes"},"source_id":"2109.01149","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:892cb9b0172d4897e5bc429c4e0727eeb50036971b693ece072c053e0ebaae03","sha256:a332e72ea2c8bab5b5060726aa7c6222b1c8aa3864a02b6907d1538347dad12c"],"state_sha256":"482c67b9e772642f963ab54650fde28c8f65c7ff61bea644787d9d255db8b57b"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"tvO0MHjgmlmsqsMTCjLrFbK49kzT5C/17WHL1iJub6uP+lSET3Jx3mbnevq6u7MXMaE6Jo74HOclUOn0vUmHBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-17T02:51:03.630039Z","bundle_sha256":"df2e1886313841c4569f046be8ccbf632fcfc72f0802d2f1257908971cec52ff"}}