{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:7L5QQ6HUB2WFQ7ZFNHAR3NSLHQ","short_pith_number":"pith:7L5QQ6HU","canonical_record":{"source":{"id":"1505.07014","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2015-05-26T15:36:20Z","cross_cats_sorted":[],"title_canon_sha256":"066498e446fe53d8d48309b83ccbf3ca54f2837df95d4d45bf7b852734aa8657","abstract_canon_sha256":"403d371dc4489491fa1f6ca75dab72267bdd296868da4696b1e5219607f450cd"},"schema_version":"1.0"},"canonical_sha256":"fafb0878f40eac587f2569c11db64b3c38aafeab815c16596e552a15c0de75e0","source":{"kind":"arxiv","id":"1505.07014","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1505.07014","created_at":"2026-05-18T01:19:34Z"},{"alias_kind":"arxiv_version","alias_value":"1505.07014v2","created_at":"2026-05-18T01:19:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1505.07014","created_at":"2026-05-18T01:19:34Z"},{"alias_kind":"pith_short_12","alias_value":"7L5QQ6HUB2WF","created_at":"2026-05-18T12:29:10Z"},{"alias_kind":"pith_short_16","alias_value":"7L5QQ6HUB2WFQ7ZF","created_at":"2026-05-18T12:29:10Z"},{"alias_kind":"pith_short_8","alias_value":"7L5QQ6HU","created_at":"2026-05-18T12:29:10Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:7L5QQ6HUB2WFQ7ZFNHAR3NSLHQ","target":"record","payload":{"canonical_record":{"source":{"id":"1505.07014","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2015-05-26T15:36:20Z","cross_cats_sorted":[],"title_canon_sha256":"066498e446fe53d8d48309b83ccbf3ca54f2837df95d4d45bf7b852734aa8657","abstract_canon_sha256":"403d371dc4489491fa1f6ca75dab72267bdd296868da4696b1e5219607f450cd"},"schema_version":"1.0"},"canonical_sha256":"fafb0878f40eac587f2569c11db64b3c38aafeab815c16596e552a15c0de75e0","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:19:34.328768Z","signature_b64":"7cLE1hTvB55Ka21OOsxQHZhBhkW/ho407LV3EuB+vnoluZbzvrSRyyjxvO0UzEXkGC4PRfdoBpBaBpJmE3qoDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"fafb0878f40eac587f2569c11db64b3c38aafeab815c16596e552a15c0de75e0","last_reissued_at":"2026-05-18T01:19:34.328257Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:19:34.328257Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1505.07014","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":"2026-05-18T01:19:34Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"uaIRHniHxj+ocWNtZsNkqdEvruJph+VxsvgqQRrO5/PKfkrpaH74tkNkCIMJy9ltNFPJ4pc8xYkctK1vM26XBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T02:27:48.070271Z"},"content_sha256":"2729ffc93a1577917b6927973a3ec7637593f6b29965df0f41f18c6a8b183876","schema_version":"1.0","event_id":"sha256:2729ffc93a1577917b6927973a3ec7637593f6b29965df0f41f18c6a8b183876"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:7L5QQ6HUB2WFQ7ZFNHAR3NSLHQ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Scattering by regular black holes: Planar massless scalar waves impinging upon a Bardeen black hole","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"gr-qc","authors_text":"Caio F. B. Macedo, Ednilton S. de Oliveira, Lu\\'is C. B. Crispino","submitted_at":"2015-05-26T15:36:20Z","abstract_excerpt":"Singularities are common features of general relativity black holes. However, within general relativity, one can construct black holes that present no singularities. These regular black hole solutions can be achieved by, for instance, relaxing one of the energy conditions on the stress energy tensor sourcing the black hole. Some regular black hole solutions were found in the context of non-linear electrodynamics, the Bardeen black hole being the first one proposed. In this paper, we consider a planar massless scalar wave scattered by a Bardeen black hole. We compare the scattering cross sectio"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1505.07014","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":""},"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":"2026-05-18T01:19:34Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"b1b0cZGM/0BLD9NkQKcqvYVbawN+eJAQsEL+AUQzeyEIxWieBYhY4SXS/btPhdphz0IKuvLNJMCk9aJ6cwxLCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T02:27:48.071113Z"},"content_sha256":"53f3b495d0c305e7f1f6fd55fe99c2fd7b911126e6093cf9fca395af456306b0","schema_version":"1.0","event_id":"sha256:53f3b495d0c305e7f1f6fd55fe99c2fd7b911126e6093cf9fca395af456306b0"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/7L5QQ6HUB2WFQ7ZFNHAR3NSLHQ/bundle.json","state_url":"https://pith.science/pith/7L5QQ6HUB2WFQ7ZFNHAR3NSLHQ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/7L5QQ6HUB2WFQ7ZFNHAR3NSLHQ/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":"2026-06-05T02:27:48Z","links":{"resolver":"https://pith.science/pith/7L5QQ6HUB2WFQ7ZFNHAR3NSLHQ","bundle":"https://pith.science/pith/7L5QQ6HUB2WFQ7ZFNHAR3NSLHQ/bundle.json","state":"https://pith.science/pith/7L5QQ6HUB2WFQ7ZFNHAR3NSLHQ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/7L5QQ6HUB2WFQ7ZFNHAR3NSLHQ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:7L5QQ6HUB2WFQ7ZFNHAR3NSLHQ","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":"403d371dc4489491fa1f6ca75dab72267bdd296868da4696b1e5219607f450cd","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2015-05-26T15:36:20Z","title_canon_sha256":"066498e446fe53d8d48309b83ccbf3ca54f2837df95d4d45bf7b852734aa8657"},"schema_version":"1.0","source":{"id":"1505.07014","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1505.07014","created_at":"2026-05-18T01:19:34Z"},{"alias_kind":"arxiv_version","alias_value":"1505.07014v2","created_at":"2026-05-18T01:19:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1505.07014","created_at":"2026-05-18T01:19:34Z"},{"alias_kind":"pith_short_12","alias_value":"7L5QQ6HUB2WF","created_at":"2026-05-18T12:29:10Z"},{"alias_kind":"pith_short_16","alias_value":"7L5QQ6HUB2WFQ7ZF","created_at":"2026-05-18T12:29:10Z"},{"alias_kind":"pith_short_8","alias_value":"7L5QQ6HU","created_at":"2026-05-18T12:29:10Z"}],"graph_snapshots":[{"event_id":"sha256:53f3b495d0c305e7f1f6fd55fe99c2fd7b911126e6093cf9fca395af456306b0","target":"graph","created_at":"2026-05-18T01:19:34Z","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":"Singularities are common features of general relativity black holes. However, within general relativity, one can construct black holes that present no singularities. These regular black hole solutions can be achieved by, for instance, relaxing one of the energy conditions on the stress energy tensor sourcing the black hole. Some regular black hole solutions were found in the context of non-linear electrodynamics, the Bardeen black hole being the first one proposed. In this paper, we consider a planar massless scalar wave scattered by a Bardeen black hole. We compare the scattering cross sectio","authors_text":"Caio F. B. Macedo, Ednilton S. de Oliveira, Lu\\'is C. B. Crispino","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2015-05-26T15:36:20Z","title":"Scattering by regular black holes: Planar massless scalar waves impinging upon a Bardeen black hole"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1505.07014","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":"sha256:2729ffc93a1577917b6927973a3ec7637593f6b29965df0f41f18c6a8b183876","target":"record","created_at":"2026-05-18T01:19:34Z","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":"403d371dc4489491fa1f6ca75dab72267bdd296868da4696b1e5219607f450cd","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2015-05-26T15:36:20Z","title_canon_sha256":"066498e446fe53d8d48309b83ccbf3ca54f2837df95d4d45bf7b852734aa8657"},"schema_version":"1.0","source":{"id":"1505.07014","kind":"arxiv","version":2}},"canonical_sha256":"fafb0878f40eac587f2569c11db64b3c38aafeab815c16596e552a15c0de75e0","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"fafb0878f40eac587f2569c11db64b3c38aafeab815c16596e552a15c0de75e0","first_computed_at":"2026-05-18T01:19:34.328257Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:19:34.328257Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"7cLE1hTvB55Ka21OOsxQHZhBhkW/ho407LV3EuB+vnoluZbzvrSRyyjxvO0UzEXkGC4PRfdoBpBaBpJmE3qoDA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:19:34.328768Z","signed_message":"canonical_sha256_bytes"},"source_id":"1505.07014","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2729ffc93a1577917b6927973a3ec7637593f6b29965df0f41f18c6a8b183876","sha256:53f3b495d0c305e7f1f6fd55fe99c2fd7b911126e6093cf9fca395af456306b0"],"state_sha256":"448f5f916e701de3bf3d5a9b0d7daa1aa75c335c072676f2c575d53a9a7f85bf"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"GzXyP5McNx1cUvWd2ViFVvpN1y1C7uihNLotUfzJENUbAuwCuo2K6kU9GDkxt8qZ9w7SZ3Tidk0ngLRCfJ5BAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-05T02:27:48.074508Z","bundle_sha256":"27499793c33e3c4c389cb65edf870e5b5bb37df21e50a24d9b86df0bb8d0e8cc"}}