{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:4QBSV6YNLSNIKOYAUSJJRAG2IW","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":"d12d16fff472f09c8ae5f5618fb92a881b961bd17a5a7aaf217e9f150dda1350","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2013-07-31T20:01:02Z","title_canon_sha256":"7b62d4da5e5321175a53f37ac5b2285085b20aadea398dc673c6f7fe3d458e7a"},"schema_version":"1.0","source":{"id":"1308.0018","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1308.0018","created_at":"2026-05-18T01:48:32Z"},{"alias_kind":"arxiv_version","alias_value":"1308.0018v1","created_at":"2026-05-18T01:48:32Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1308.0018","created_at":"2026-05-18T01:48:32Z"},{"alias_kind":"pith_short_12","alias_value":"4QBSV6YNLSNI","created_at":"2026-05-18T12:27:34Z"},{"alias_kind":"pith_short_16","alias_value":"4QBSV6YNLSNIKOYA","created_at":"2026-05-18T12:27:34Z"},{"alias_kind":"pith_short_8","alias_value":"4QBSV6YN","created_at":"2026-05-18T12:27:34Z"}],"graph_snapshots":[{"event_id":"sha256:ff749d976d5bc3ca088ceb93e3514c30653b4f5f187fe99c664f8bbe601d3e6a","target":"graph","created_at":"2026-05-18T01:48:32Z","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":"We consider planar massless scalar waves impinging upon a Kerr black hole, for general angles of incidence. We compute the absorption cross section via the partial wave approach, and present a gallery of results. In the low-frequency regime, we show that the cross section approaches the horizon area; in the high-frequency regime, we show that the cross section approaches the geodesic capture cross section. In the aligned case, we extend the complex angular momentum method to obtain a `sinc' approximation, which relates the regular high-frequency oscillations in the cross section to the propert","authors_text":"Caio F. B. Macedo, Ednilton S. Oliveira, Lu\\'is C. B. Crispino, Luiz C. S. Leite, Sam R. Dolan","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2013-07-31T20:01:02Z","title":"Absorption of planar massless scalar waves by Kerr black holes"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1308.0018","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:c2fe50f6f8459113859ad454a5edf6ae9b625313db6e18f3d06cc7a463e97120","target":"record","created_at":"2026-05-18T01:48:32Z","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":"d12d16fff472f09c8ae5f5618fb92a881b961bd17a5a7aaf217e9f150dda1350","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2013-07-31T20:01:02Z","title_canon_sha256":"7b62d4da5e5321175a53f37ac5b2285085b20aadea398dc673c6f7fe3d458e7a"},"schema_version":"1.0","source":{"id":"1308.0018","kind":"arxiv","version":1}},"canonical_sha256":"e4032afb0d5c9a853b00a4929880da45a9428a7b399da65aa319ef613400d2e3","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e4032afb0d5c9a853b00a4929880da45a9428a7b399da65aa319ef613400d2e3","first_computed_at":"2026-05-18T01:48:32.049881Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:48:32.049881Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"2CT/rJpRmI5GxfMtRMskD1sMXUnxCbpCsE2eMYI/kmeDHu+R2QppFrBRoKwJoGucWvhgpAe5XsYDWza+WridDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:48:32.050350Z","signed_message":"canonical_sha256_bytes"},"source_id":"1308.0018","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c2fe50f6f8459113859ad454a5edf6ae9b625313db6e18f3d06cc7a463e97120","sha256:ff749d976d5bc3ca088ceb93e3514c30653b4f5f187fe99c664f8bbe601d3e6a"],"state_sha256":"0975538be438c3899322b4ae4b9a9b2f0681ca4d217aa4f85f227cefd35a9e3b"}