{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2024:6UOBIXRCEMN6TDFUGP7PRHKIAR","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":"005abda0631daa67d200366783bd379ffb48d4188b923bcd4cd31bc469788370","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2024-05-08T12:25:53Z","title_canon_sha256":"a9e9b1dda4cc8317434ec6828650053a519b77a3a9deffdc09dbc58dfb8b7bcd"},"schema_version":"1.0","source":{"id":"2405.05011","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2405.05011","created_at":"2026-07-05T09:39:23Z"},{"alias_kind":"arxiv_version","alias_value":"2405.05011v1","created_at":"2026-07-05T09:39:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2405.05011","created_at":"2026-07-05T09:39:23Z"},{"alias_kind":"pith_short_12","alias_value":"6UOBIXRCEMN6","created_at":"2026-07-05T09:39:23Z"},{"alias_kind":"pith_short_16","alias_value":"6UOBIXRCEMN6TDFU","created_at":"2026-07-05T09:39:23Z"},{"alias_kind":"pith_short_8","alias_value":"6UOBIXRC","created_at":"2026-07-05T09:39:23Z"}],"graph_snapshots":[{"event_id":"sha256:5883228360f67883566e7c99b6048f90e4a042145e7b4fb2d3654e967bb2a465","target":"graph","created_at":"2026-07-05T09:39:23Z","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/2405.05011/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"In this study, we investigate the image of a rotating compact object (CO) illuminated by a geometrically thin, optically thin disk on the equatorial plane. As the radius of the CO's surface fluctuates, the CO may partially or entirely obscure the photon region. We observe that the perceived photon ring may exhibit discontinuities, deviating from a closed structure, and may even disappear entirely. We find that the disruption and disappearance of the photon ring are dependent on the observational angle$-$a novel phenomenon not previously observed in black hole imaging studies. Our study reveals","authors_text":"Hai-Qing Zhang, Minyong Guo, Xiangyu Wang, Xiaobao Wang","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2024-05-08T12:25:53Z","title":"Is a photon ring invariably a closed structure?"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2405.05011","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:fbf71aad9e48dc881c84962b62908b525318b17bb91eeb3f1ce63fff2e763709","target":"record","created_at":"2026-07-05T09:39:23Z","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":"005abda0631daa67d200366783bd379ffb48d4188b923bcd4cd31bc469788370","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2024-05-08T12:25:53Z","title_canon_sha256":"a9e9b1dda4cc8317434ec6828650053a519b77a3a9deffdc09dbc58dfb8b7bcd"},"schema_version":"1.0","source":{"id":"2405.05011","kind":"arxiv","version":1}},"canonical_sha256":"f51c145e22231be98cb433fef89d48046342253969ab88452110efd8677483e0","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f51c145e22231be98cb433fef89d48046342253969ab88452110efd8677483e0","first_computed_at":"2026-07-05T09:39:23.000031Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T09:39:23.000031Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"WWwvjrJSO65Ynb0y9rwExB5hlerthkXcXc1N4184Wi2ClU7KubCG47vuNAcLJmDwCEJYFPygXB/T7qjPRiRaBA==","signature_status":"signed_v1","signed_at":"2026-07-05T09:39:23.000521Z","signed_message":"canonical_sha256_bytes"},"source_id":"2405.05011","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:fbf71aad9e48dc881c84962b62908b525318b17bb91eeb3f1ce63fff2e763709","sha256:5883228360f67883566e7c99b6048f90e4a042145e7b4fb2d3654e967bb2a465"],"state_sha256":"18295206ba8a1efbc8790825b0fc9f42281fa175676e24ebdb6a9e4e7e155317"}