{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2004:5C4X5MXXGOZ57265ZCK2IUL46R","short_pith_number":"pith:5C4X5MXX","schema_version":"1.0","canonical_sha256":"e8b97eb2f733b3dfebddc895a4517cf45f4f47bd2b5e5bfa69e2d322e846a6b2","source":{"kind":"arxiv","id":"astro-ph/0411339","version":1},"attestation_state":"computed","paper":{"title":"Extreme Gravitational Lensing near Rotating Black Holes","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"Chris Done, Kris Beckwith","submitted_at":"2004-11-12T17:18:00Z","abstract_excerpt":"We describe a new approach to calculating photon trajectories and gravitational lensing effects in the strong gravitational field of the Kerr black hole. These techniques are applied to explore both the imaging and spectral properties of photons that perform multiple orbits of the central mass before escaping to infinity. Viewed at large inclinations, these higher order photons contribute $\\sim 20 %$ of the total luminosity of the system for a Schwarzschild hole, whilst for an extreme Kerr black hole this fraction rises to $\\sim 60 %$. In more realistic models these photons will be re-absorbed"},"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":"astro-ph/0411339","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2004-11-12T17:18:00Z","cross_cats_sorted":[],"title_canon_sha256":"435dcce6463f2ce5017cf35ba0505ffdaf1dcdb90714e4b5c9bf81f3db768b0b","abstract_canon_sha256":"be515dfdea58b912d98914585942bb7afb47b8e90cc54b88ccdfe8eb08025e51"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:22:32.319901Z","signature_b64":"FodjA+ayHtugEsnVQ2S2H/AYVWkR+MghirxxY36oyakTHkxFykDu5rjg+ptMyB4UVRoDI02Txv0KMSOujPBPDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e8b97eb2f733b3dfebddc895a4517cf45f4f47bd2b5e5bfa69e2d322e846a6b2","last_reissued_at":"2026-05-18T04:22:32.319342Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:22:32.319342Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Extreme Gravitational Lensing near Rotating Black Holes","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"Chris Done, Kris Beckwith","submitted_at":"2004-11-12T17:18:00Z","abstract_excerpt":"We describe a new approach to calculating photon trajectories and gravitational lensing effects in the strong gravitational field of the Kerr black hole. These techniques are applied to explore both the imaging and spectral properties of photons that perform multiple orbits of the central mass before escaping to infinity. Viewed at large inclinations, these higher order photons contribute $\\sim 20 %$ of the total luminosity of the system for a Schwarzschild hole, whilst for an extreme Kerr black hole this fraction rises to $\\sim 60 %$. In more realistic models these photons will be re-absorbed"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0411339","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"},"aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0411339","created_at":"2026-05-18T04:22:32.319426+00:00"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0411339v1","created_at":"2026-05-18T04:22:32.319426+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0411339","created_at":"2026-05-18T04:22:32.319426+00:00"},{"alias_kind":"pith_short_12","alias_value":"5C4X5MXXGOZ5","created_at":"2026-05-18T12:25:52.051335+00:00"},{"alias_kind":"pith_short_16","alias_value":"5C4X5MXXGOZ57265","created_at":"2026-05-18T12:25:52.051335+00:00"},{"alias_kind":"pith_short_8","alias_value":"5C4X5MXX","created_at":"2026-05-18T12:25:52.051335+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":1,"internal_anchor_count":1,"sample":[{"citing_arxiv_id":"2604.07726","citing_title":"Unveiling Inner Shadows and Polarization Signatures of Rotating Einstein-Gauss-Bonnet Black Holes","ref_index":11,"is_internal_anchor":true}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/5C4X5MXXGOZ57265ZCK2IUL46R","json":"https://pith.science/pith/5C4X5MXXGOZ57265ZCK2IUL46R.json","graph_json":"https://pith.science/api/pith-number/5C4X5MXXGOZ57265ZCK2IUL46R/graph.json","events_json":"https://pith.science/api/pith-number/5C4X5MXXGOZ57265ZCK2IUL46R/events.json","paper":"https://pith.science/paper/5C4X5MXX"},"agent_actions":{"view_html":"https://pith.science/pith/5C4X5MXXGOZ57265ZCK2IUL46R","download_json":"https://pith.science/pith/5C4X5MXXGOZ57265ZCK2IUL46R.json","view_paper":"https://pith.science/paper/5C4X5MXX","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=astro-ph/0411339&json=true","fetch_graph":"https://pith.science/api/pith-number/5C4X5MXXGOZ57265ZCK2IUL46R/graph.json","fetch_events":"https://pith.science/api/pith-number/5C4X5MXXGOZ57265ZCK2IUL46R/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/5C4X5MXXGOZ57265ZCK2IUL46R/action/timestamp_anchor","attest_storage":"https://pith.science/pith/5C4X5MXXGOZ57265ZCK2IUL46R/action/storage_attestation","attest_author":"https://pith.science/pith/5C4X5MXXGOZ57265ZCK2IUL46R/action/author_attestation","sign_citation":"https://pith.science/pith/5C4X5MXXGOZ57265ZCK2IUL46R/action/citation_signature","submit_replication":"https://pith.science/pith/5C4X5MXXGOZ57265ZCK2IUL46R/action/replication_record"}},"created_at":"2026-05-18T04:22:32.319426+00:00","updated_at":"2026-05-18T04:22:32.319426+00:00"}