{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:NTBU3ZPP5OMADLW7PLV67BXQL4","short_pith_number":"pith:NTBU3ZPP","canonical_record":{"source":{"id":"1810.11493","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2018-10-26T18:39:56Z","cross_cats_sorted":["astro-ph.IM","astro-ph.SR"],"title_canon_sha256":"ec7b6878b5c5add3ad4ba46362d861edf051a7591de73366343c1c11e8b624b6","abstract_canon_sha256":"df67e68eca8d461a5f888dbbe566b3fae76388d92e94a27e673efe894102152a"},"schema_version":"1.0"},"canonical_sha256":"6cc34de5efeb9801aedf7aebef86f05f2193157bb133991b43aeb8acc48ebba5","source":{"kind":"arxiv","id":"1810.11493","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1810.11493","created_at":"2026-05-17T23:56:17Z"},{"alias_kind":"arxiv_version","alias_value":"1810.11493v1","created_at":"2026-05-17T23:56:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1810.11493","created_at":"2026-05-17T23:56:17Z"},{"alias_kind":"pith_short_12","alias_value":"NTBU3ZPP5OMA","created_at":"2026-05-18T12:32:40Z"},{"alias_kind":"pith_short_16","alias_value":"NTBU3ZPP5OMADLW7","created_at":"2026-05-18T12:32:40Z"},{"alias_kind":"pith_short_8","alias_value":"NTBU3ZPP","created_at":"2026-05-18T12:32:40Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:NTBU3ZPP5OMADLW7PLV67BXQL4","target":"record","payload":{"canonical_record":{"source":{"id":"1810.11493","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2018-10-26T18:39:56Z","cross_cats_sorted":["astro-ph.IM","astro-ph.SR"],"title_canon_sha256":"ec7b6878b5c5add3ad4ba46362d861edf051a7591de73366343c1c11e8b624b6","abstract_canon_sha256":"df67e68eca8d461a5f888dbbe566b3fae76388d92e94a27e673efe894102152a"},"schema_version":"1.0"},"canonical_sha256":"6cc34de5efeb9801aedf7aebef86f05f2193157bb133991b43aeb8acc48ebba5","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:56:17.304898Z","signature_b64":"hiYAfUY1GH5bmnyx2mYZjX8Z0wRyjWaNIz/ZZXzwAeQFj5t6+CLF+xXZjknMhm8zpDHqxBWyqUpZvu4ScVn3Cw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6cc34de5efeb9801aedf7aebef86f05f2193157bb133991b43aeb8acc48ebba5","last_reissued_at":"2026-05-17T23:56:17.304178Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:56:17.304178Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1810.11493","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-17T23:56:17Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"yp/po+GJtXL9sHFVOCmGF/sbl/SY8Zdf74TTLi1PgOVXesZ3VfE1ObxVAk8dhw7uE5v83q3ULob9PR3xaXDnBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T04:24:38.191899Z"},"content_sha256":"56245979b217a5766d4726d40fb6a2a3537f88878d8628fcd225a9ba2f8baa6a","schema_version":"1.0","event_id":"sha256:56245979b217a5766d4726d40fb6a2a3537f88878d8628fcd225a9ba2f8baa6a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:NTBU3ZPP5OMADLW7PLV67BXQL4","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Exoplanet Transits with Next-Generation Radio Telescopes","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.IM","astro-ph.SR"],"primary_cat":"astro-ph.EP","authors_text":"Benjamin J. S. Pope, Joseph R. Callingham, Marissa F. Vogt, Paul Withers","submitted_at":"2018-10-26T18:39:56Z","abstract_excerpt":"Nearly everything we know about extrasolar planets to date comes from optical astronomy. While exoplanetary aurorae are predicted to be bright at low radio frequencies (< 1 GHz), we consider the effect of an exoplanet transit on radio emission from the host star. As radio emission from solar-like stars is concentrated in active regions, a planet occulting a starspot can cause a disproportionately deep transit which should be detectable with major radio arrays currently under development, such as the Square Kilometre Array (SKA). We calculate the radiometric sensitivity of the SKA stages and co"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1810.11493","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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-17T23:56:17Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"zugWX5oHBoAk/2/VED/8SNCMfIKzO1z9HaOQas1bnNGSB+cAGrcmhlk0vEVnC1soZcuxTKUyyR7Zb0O1+mxPDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T04:24:38.192573Z"},"content_sha256":"faa0e92c77e161c62610e84d7dcc54ca3fa5aa1537f587fda858e3b91b557f8b","schema_version":"1.0","event_id":"sha256:faa0e92c77e161c62610e84d7dcc54ca3fa5aa1537f587fda858e3b91b557f8b"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/NTBU3ZPP5OMADLW7PLV67BXQL4/bundle.json","state_url":"https://pith.science/pith/NTBU3ZPP5OMADLW7PLV67BXQL4/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/NTBU3ZPP5OMADLW7PLV67BXQL4/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":"2026-05-27T04:24:38Z","links":{"resolver":"https://pith.science/pith/NTBU3ZPP5OMADLW7PLV67BXQL4","bundle":"https://pith.science/pith/NTBU3ZPP5OMADLW7PLV67BXQL4/bundle.json","state":"https://pith.science/pith/NTBU3ZPP5OMADLW7PLV67BXQL4/state.json","well_known_bundle":"https://pith.science/.well-known/pith/NTBU3ZPP5OMADLW7PLV67BXQL4/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:NTBU3ZPP5OMADLW7PLV67BXQL4","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":"df67e68eca8d461a5f888dbbe566b3fae76388d92e94a27e673efe894102152a","cross_cats_sorted":["astro-ph.IM","astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2018-10-26T18:39:56Z","title_canon_sha256":"ec7b6878b5c5add3ad4ba46362d861edf051a7591de73366343c1c11e8b624b6"},"schema_version":"1.0","source":{"id":"1810.11493","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1810.11493","created_at":"2026-05-17T23:56:17Z"},{"alias_kind":"arxiv_version","alias_value":"1810.11493v1","created_at":"2026-05-17T23:56:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1810.11493","created_at":"2026-05-17T23:56:17Z"},{"alias_kind":"pith_short_12","alias_value":"NTBU3ZPP5OMA","created_at":"2026-05-18T12:32:40Z"},{"alias_kind":"pith_short_16","alias_value":"NTBU3ZPP5OMADLW7","created_at":"2026-05-18T12:32:40Z"},{"alias_kind":"pith_short_8","alias_value":"NTBU3ZPP","created_at":"2026-05-18T12:32:40Z"}],"graph_snapshots":[{"event_id":"sha256:faa0e92c77e161c62610e84d7dcc54ca3fa5aa1537f587fda858e3b91b557f8b","target":"graph","created_at":"2026-05-17T23:56:17Z","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":"Nearly everything we know about extrasolar planets to date comes from optical astronomy. While exoplanetary aurorae are predicted to be bright at low radio frequencies (< 1 GHz), we consider the effect of an exoplanet transit on radio emission from the host star. As radio emission from solar-like stars is concentrated in active regions, a planet occulting a starspot can cause a disproportionately deep transit which should be detectable with major radio arrays currently under development, such as the Square Kilometre Array (SKA). We calculate the radiometric sensitivity of the SKA stages and co","authors_text":"Benjamin J. S. Pope, Joseph R. Callingham, Marissa F. Vogt, Paul Withers","cross_cats":["astro-ph.IM","astro-ph.SR"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2018-10-26T18:39:56Z","title":"Exoplanet Transits with Next-Generation Radio Telescopes"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1810.11493","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":"sha256:56245979b217a5766d4726d40fb6a2a3537f88878d8628fcd225a9ba2f8baa6a","target":"record","created_at":"2026-05-17T23:56:17Z","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":"df67e68eca8d461a5f888dbbe566b3fae76388d92e94a27e673efe894102152a","cross_cats_sorted":["astro-ph.IM","astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2018-10-26T18:39:56Z","title_canon_sha256":"ec7b6878b5c5add3ad4ba46362d861edf051a7591de73366343c1c11e8b624b6"},"schema_version":"1.0","source":{"id":"1810.11493","kind":"arxiv","version":1}},"canonical_sha256":"6cc34de5efeb9801aedf7aebef86f05f2193157bb133991b43aeb8acc48ebba5","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6cc34de5efeb9801aedf7aebef86f05f2193157bb133991b43aeb8acc48ebba5","first_computed_at":"2026-05-17T23:56:17.304178Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:56:17.304178Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"hiYAfUY1GH5bmnyx2mYZjX8Z0wRyjWaNIz/ZZXzwAeQFj5t6+CLF+xXZjknMhm8zpDHqxBWyqUpZvu4ScVn3Cw==","signature_status":"signed_v1","signed_at":"2026-05-17T23:56:17.304898Z","signed_message":"canonical_sha256_bytes"},"source_id":"1810.11493","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:56245979b217a5766d4726d40fb6a2a3537f88878d8628fcd225a9ba2f8baa6a","sha256:faa0e92c77e161c62610e84d7dcc54ca3fa5aa1537f587fda858e3b91b557f8b"],"state_sha256":"67846912e3ec81611d672410a4afb0d7d92e5b7f7b9e75c3f7799c876c3fe2aa"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"P2RZ4tvnb7tXBw9YWOvpj4DAj9DEHPpdf5ZG6u7Q4Nzh0m/cjL7fyV5Qyz2QpsQ3gsHrNJTUaHERICqx0HfnCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T04:24:38.196204Z","bundle_sha256":"78e6e6c1df678a16415adb526fd670d23f76206ce37eb1ba2a3b348ccc176745"}}