{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:ECWU4FASQR7PH4VUIKNM4I7CJO","short_pith_number":"pith:ECWU4FAS","canonical_record":{"source":{"id":"1812.11463","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2018-12-30T03:32:40Z","cross_cats_sorted":[],"title_canon_sha256":"54e359f46e09f920723246728ac3ef9ae147c481cec9148ea5839c10b0a35388","abstract_canon_sha256":"a1f9c691ed000f6d852b07b23bab7faebde85d85d948ee44848afeb5193d1239"},"schema_version":"1.0"},"canonical_sha256":"20ad4e1412847ef3f2b4429ace23e24ba4e19c98919f2124b4610fe99fdcf995","source":{"kind":"arxiv","id":"1812.11463","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1812.11463","created_at":"2026-05-17T23:43:50Z"},{"alias_kind":"arxiv_version","alias_value":"1812.11463v3","created_at":"2026-05-17T23:43:50Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1812.11463","created_at":"2026-05-17T23:43:50Z"},{"alias_kind":"pith_short_12","alias_value":"ECWU4FASQR7P","created_at":"2026-05-18T12:32:22Z"},{"alias_kind":"pith_short_16","alias_value":"ECWU4FASQR7PH4VU","created_at":"2026-05-18T12:32:22Z"},{"alias_kind":"pith_short_8","alias_value":"ECWU4FAS","created_at":"2026-05-18T12:32:22Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:ECWU4FASQR7PH4VUIKNM4I7CJO","target":"record","payload":{"canonical_record":{"source":{"id":"1812.11463","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2018-12-30T03:32:40Z","cross_cats_sorted":[],"title_canon_sha256":"54e359f46e09f920723246728ac3ef9ae147c481cec9148ea5839c10b0a35388","abstract_canon_sha256":"a1f9c691ed000f6d852b07b23bab7faebde85d85d948ee44848afeb5193d1239"},"schema_version":"1.0"},"canonical_sha256":"20ad4e1412847ef3f2b4429ace23e24ba4e19c98919f2124b4610fe99fdcf995","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:43:50.208385Z","signature_b64":"N/4YkEbseJUEWV+Ba8DkQAyiga9eNjforHYbXusIAPfSFnA+eOXuCqyoFPKW1P9ZhNV/UoDkHQE+WdjWP+96Bg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"20ad4e1412847ef3f2b4429ace23e24ba4e19c98919f2124b4610fe99fdcf995","last_reissued_at":"2026-05-17T23:43:50.207831Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:43:50.207831Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1812.11463","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-17T23:43:50Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"VxCTcjqUzJgymC7+CjSWPjhsl4uuRBzIhhweI4mCsRSQSZVRblNUtXZlbqeqxjLTU7HKzYohd6y/TNi6OIlqCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T13:20:17.008535Z"},"content_sha256":"a7318f318c5c2b8e08bb5ee41812dfbeb55b78af894f61686270dfaff6bb3c62","schema_version":"1.0","event_id":"sha256:a7318f318c5c2b8e08bb5ee41812dfbeb55b78af894f61686270dfaff6bb3c62"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:ECWU4FASQR7PH4VUIKNM4I7CJO","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Electromagnetic emissions from near-horizon region of an extreme Kerr-Taub-Nut black hole","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"gr-qc","authors_text":"Fen Long, Jieci Wang, Jiliang Jing, Songbai Chen","submitted_at":"2018-12-30T03:32:40Z","abstract_excerpt":"We have studied electromagnetic line emissions from near-horizon region in the extremal Kerr-Taub-NUT black hole spacetime and then probe the effects of NUT charge on the electromagnetic line emissions. Due to the presence of the NUT charge, the equatorial plane is no more a symmetry plane of the KTN spacetime, which leads to that the dependence of electromagnetic line emission on the NUT charge for the observer in the Southern Hemisphere differs from that in the Northern one. Our result indicate that the electromagnetic line emission in the Kerr-Taub-NUT black hole case is brighter than that "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1812.11463","kind":"arxiv","version":3},"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":"2026-05-17T23:43:50Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"70FVu3kKMrSuG7qi4NEtDae2cB+t0AQj8m9MA6vJooWr8vGnlk86i5iIcA1eiONQAmvTSxmbU9JesbGQKX6DBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T13:20:17.009194Z"},"content_sha256":"9d4a5ac0e322cc8fb5b64e54f0472a7e2bcc62c183743e134a7723c4cce83dea","schema_version":"1.0","event_id":"sha256:9d4a5ac0e322cc8fb5b64e54f0472a7e2bcc62c183743e134a7723c4cce83dea"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ECWU4FASQR7PH4VUIKNM4I7CJO/bundle.json","state_url":"https://pith.science/pith/ECWU4FASQR7PH4VUIKNM4I7CJO/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ECWU4FASQR7PH4VUIKNM4I7CJO/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":"2026-05-25T13:20:17Z","links":{"resolver":"https://pith.science/pith/ECWU4FASQR7PH4VUIKNM4I7CJO","bundle":"https://pith.science/pith/ECWU4FASQR7PH4VUIKNM4I7CJO/bundle.json","state":"https://pith.science/pith/ECWU4FASQR7PH4VUIKNM4I7CJO/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ECWU4FASQR7PH4VUIKNM4I7CJO/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:ECWU4FASQR7PH4VUIKNM4I7CJO","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":"a1f9c691ed000f6d852b07b23bab7faebde85d85d948ee44848afeb5193d1239","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2018-12-30T03:32:40Z","title_canon_sha256":"54e359f46e09f920723246728ac3ef9ae147c481cec9148ea5839c10b0a35388"},"schema_version":"1.0","source":{"id":"1812.11463","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1812.11463","created_at":"2026-05-17T23:43:50Z"},{"alias_kind":"arxiv_version","alias_value":"1812.11463v3","created_at":"2026-05-17T23:43:50Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1812.11463","created_at":"2026-05-17T23:43:50Z"},{"alias_kind":"pith_short_12","alias_value":"ECWU4FASQR7P","created_at":"2026-05-18T12:32:22Z"},{"alias_kind":"pith_short_16","alias_value":"ECWU4FASQR7PH4VU","created_at":"2026-05-18T12:32:22Z"},{"alias_kind":"pith_short_8","alias_value":"ECWU4FAS","created_at":"2026-05-18T12:32:22Z"}],"graph_snapshots":[{"event_id":"sha256:9d4a5ac0e322cc8fb5b64e54f0472a7e2bcc62c183743e134a7723c4cce83dea","target":"graph","created_at":"2026-05-17T23:43:50Z","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 have studied electromagnetic line emissions from near-horizon region in the extremal Kerr-Taub-NUT black hole spacetime and then probe the effects of NUT charge on the electromagnetic line emissions. Due to the presence of the NUT charge, the equatorial plane is no more a symmetry plane of the KTN spacetime, which leads to that the dependence of electromagnetic line emission on the NUT charge for the observer in the Southern Hemisphere differs from that in the Northern one. Our result indicate that the electromagnetic line emission in the Kerr-Taub-NUT black hole case is brighter than that ","authors_text":"Fen Long, Jieci Wang, Jiliang Jing, Songbai Chen","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2018-12-30T03:32:40Z","title":"Electromagnetic emissions from near-horizon region of an extreme Kerr-Taub-Nut black hole"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1812.11463","kind":"arxiv","version":3},"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:a7318f318c5c2b8e08bb5ee41812dfbeb55b78af894f61686270dfaff6bb3c62","target":"record","created_at":"2026-05-17T23:43:50Z","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":"a1f9c691ed000f6d852b07b23bab7faebde85d85d948ee44848afeb5193d1239","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2018-12-30T03:32:40Z","title_canon_sha256":"54e359f46e09f920723246728ac3ef9ae147c481cec9148ea5839c10b0a35388"},"schema_version":"1.0","source":{"id":"1812.11463","kind":"arxiv","version":3}},"canonical_sha256":"20ad4e1412847ef3f2b4429ace23e24ba4e19c98919f2124b4610fe99fdcf995","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"20ad4e1412847ef3f2b4429ace23e24ba4e19c98919f2124b4610fe99fdcf995","first_computed_at":"2026-05-17T23:43:50.207831Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:43:50.207831Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"N/4YkEbseJUEWV+Ba8DkQAyiga9eNjforHYbXusIAPfSFnA+eOXuCqyoFPKW1P9ZhNV/UoDkHQE+WdjWP+96Bg==","signature_status":"signed_v1","signed_at":"2026-05-17T23:43:50.208385Z","signed_message":"canonical_sha256_bytes"},"source_id":"1812.11463","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a7318f318c5c2b8e08bb5ee41812dfbeb55b78af894f61686270dfaff6bb3c62","sha256:9d4a5ac0e322cc8fb5b64e54f0472a7e2bcc62c183743e134a7723c4cce83dea"],"state_sha256":"f477e5ce81d05f28db548c529fd05a7b9b030a99351b35e64ee96b2374d27894"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"wokVh0FgBUcmtXVR0s38fPvqI9Wke5GC9r+YL9eq/2Deu0iX8+P9PLl55SFKU/i+vguzbAnf2Hm8e0YsXptxCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T13:20:17.012480Z","bundle_sha256":"2d77f3bb3d106109e9035edcb8734785a57aa1ae2d99d707d5e3ebd42d6a9b80"}}