{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2026:IMHXVM2QKGPN5J4VKRVDZRM755","short_pith_number":"pith:IMHXVM2Q","schema_version":"1.0","canonical_sha256":"430f7ab350519edea795546a3cc59fef6940bbe0e75c6cec5c1231aa781d276a","source":{"kind":"arxiv","id":"2607.23093","version":1},"attestation_state":"computed","paper":{"title":"Optical Appearance of a Rotating Black Hole in Nonlinear Electrodynamics Surrounded by Thin Accretion Disks","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"gr-qc","authors_text":"Abdul Malik Sultan, Manahil Ali, Muhammad Israr Aslam, Zi-Chao Lin","submitted_at":"2026-07-25T08:07:25Z","abstract_excerpt":"This work investigates the optical appearance of a rotating black hole (BH) in nonlinear electrodynamics (NED) using two illumination models, namely a celestial sphere and a thin accretion disk. The BH images are constructed using a backward ray-tracing method together with a fisheye camera model. We examine the effects of the electric charge $Q$ and the NED parameter $\\beta$ on the event horizon, shadow, photon ring, and optical appearance for both prograde and retrograde accretion flows. The results indicate that an increase in $\\beta$ leads to a larger shadow radius with reduced distortion,"},"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":"2607.23093","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"gr-qc","submitted_at":"2026-07-25T08:07:25Z","cross_cats_sorted":[],"title_canon_sha256":"838c9df966ffab42b169842b233f7f69972f6085975bef5b073346eebe8e5673","abstract_canon_sha256":"6310f4b7a50bcbcfa32fd85a3f6d9d669c80a6b825da202a1d9db8c6c907f7ec"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-28T01:22:06.427702Z","signature_b64":"3DorWKAnKcNoPypOOy/0HyFr9jc68R/Ho9DNcwXHS581GK96rN8jBFljrCkTEl/hZphNfjjNxaV6+dAMsumdBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"430f7ab350519edea795546a3cc59fef6940bbe0e75c6cec5c1231aa781d276a","last_reissued_at":"2026-07-28T01:22:06.426731Z","signature_status":"signed_v1","first_computed_at":"2026-07-28T01:22:06.426731Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Optical Appearance of a Rotating Black Hole in Nonlinear Electrodynamics Surrounded by Thin Accretion Disks","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"gr-qc","authors_text":"Abdul Malik Sultan, Manahil Ali, Muhammad Israr Aslam, Zi-Chao Lin","submitted_at":"2026-07-25T08:07:25Z","abstract_excerpt":"This work investigates the optical appearance of a rotating black hole (BH) in nonlinear electrodynamics (NED) using two illumination models, namely a celestial sphere and a thin accretion disk. The BH images are constructed using a backward ray-tracing method together with a fisheye camera model. We examine the effects of the electric charge $Q$ and the NED parameter $\\beta$ on the event horizon, shadow, photon ring, and optical appearance for both prograde and retrograde accretion flows. The results indicate that an increase in $\\beta$ leads to a larger shadow radius with reduced distortion,"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2607.23093","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/2607.23093/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"},"aliases":[{"alias_kind":"arxiv","alias_value":"2607.23093","created_at":"2026-07-28T01:22:06.427183+00:00"},{"alias_kind":"arxiv_version","alias_value":"2607.23093v1","created_at":"2026-07-28T01:22:06.427183+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2607.23093","created_at":"2026-07-28T01:22:06.427183+00:00"},{"alias_kind":"pith_short_12","alias_value":"IMHXVM2QKGPN","created_at":"2026-07-28T01:22:06.427183+00:00"},{"alias_kind":"pith_short_16","alias_value":"IMHXVM2QKGPN5J4V","created_at":"2026-07-28T01:22:06.427183+00:00"},{"alias_kind":"pith_short_8","alias_value":"IMHXVM2Q","created_at":"2026-07-28T01:22:06.427183+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/IMHXVM2QKGPN5J4VKRVDZRM755","json":"https://pith.science/pith/IMHXVM2QKGPN5J4VKRVDZRM755.json","graph_json":"https://pith.science/api/pith-number/IMHXVM2QKGPN5J4VKRVDZRM755/graph.json","events_json":"https://pith.science/api/pith-number/IMHXVM2QKGPN5J4VKRVDZRM755/events.json","paper":"https://pith.science/paper/IMHXVM2Q"},"agent_actions":{"view_html":"https://pith.science/pith/IMHXVM2QKGPN5J4VKRVDZRM755","download_json":"https://pith.science/pith/IMHXVM2QKGPN5J4VKRVDZRM755.json","view_paper":"https://pith.science/paper/IMHXVM2Q","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2607.23093&json=true","fetch_graph":"https://pith.science/api/pith-number/IMHXVM2QKGPN5J4VKRVDZRM755/graph.json","fetch_events":"https://pith.science/api/pith-number/IMHXVM2QKGPN5J4VKRVDZRM755/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/IMHXVM2QKGPN5J4VKRVDZRM755/action/timestamp_anchor","attest_storage":"https://pith.science/pith/IMHXVM2QKGPN5J4VKRVDZRM755/action/storage_attestation","attest_author":"https://pith.science/pith/IMHXVM2QKGPN5J4VKRVDZRM755/action/author_attestation","sign_citation":"https://pith.science/pith/IMHXVM2QKGPN5J4VKRVDZRM755/action/citation_signature","submit_replication":"https://pith.science/pith/IMHXVM2QKGPN5J4VKRVDZRM755/action/replication_record"}},"created_at":"2026-07-28T01:22:06.427183+00:00","updated_at":"2026-07-28T01:22:06.427183+00:00"}