{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:IPXCUP7VHBRBLNC6V4Z3PP74XI","short_pith_number":"pith:IPXCUP7V","canonical_record":{"source":{"id":"1808.07055","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2018-08-21T18:00:00Z","cross_cats_sorted":["gr-qc"],"title_canon_sha256":"c04715807e91d236025630fc33388a5c817ce73bf1e4cd8256a0fabbf1848cdb","abstract_canon_sha256":"06b868d9f95a8596684089ae109ee3d6a0a0ffc18d9adc09a60eb03ea728daa3"},"schema_version":"1.0"},"canonical_sha256":"43ee2a3ff5386215b45eaf33b7bffcba34e039818059d6e14b2db52ed71210b3","source":{"kind":"arxiv","id":"1808.07055","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1808.07055","created_at":"2026-05-17T23:59:51Z"},{"alias_kind":"arxiv_version","alias_value":"1808.07055v2","created_at":"2026-05-17T23:59:51Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1808.07055","created_at":"2026-05-17T23:59:51Z"},{"alias_kind":"pith_short_12","alias_value":"IPXCUP7VHBRB","created_at":"2026-05-18T12:32:31Z"},{"alias_kind":"pith_short_16","alias_value":"IPXCUP7VHBRBLNC6","created_at":"2026-05-18T12:32:31Z"},{"alias_kind":"pith_short_8","alias_value":"IPXCUP7V","created_at":"2026-05-18T12:32:31Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:IPXCUP7VHBRBLNC6V4Z3PP74XI","target":"record","payload":{"canonical_record":{"source":{"id":"1808.07055","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2018-08-21T18:00:00Z","cross_cats_sorted":["gr-qc"],"title_canon_sha256":"c04715807e91d236025630fc33388a5c817ce73bf1e4cd8256a0fabbf1848cdb","abstract_canon_sha256":"06b868d9f95a8596684089ae109ee3d6a0a0ffc18d9adc09a60eb03ea728daa3"},"schema_version":"1.0"},"canonical_sha256":"43ee2a3ff5386215b45eaf33b7bffcba34e039818059d6e14b2db52ed71210b3","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:59:51.799784Z","signature_b64":"G9hEMPhPBwPKE/wSiSdeGzcSzScvWZJnBqp37Gix6+EHJDRPBBvUbVb/79VWuEfkQ7bTd009XnpOifN/wNCRCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"43ee2a3ff5386215b45eaf33b7bffcba34e039818059d6e14b2db52ed71210b3","last_reissued_at":"2026-05-17T23:59:51.799299Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:59:51.799299Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1808.07055","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":"2026-05-17T23:59:51Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"VdMUvl7OxS1ZfENd8Es4lQce+2yrzbULRTUVbjrZEY/iGj3g36HdNo53sceWkR8vvooyxFuaElRQIpU6uJfPCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T00:34:22.017966Z"},"content_sha256":"3deabc58a7feb67b643258cc6d03d537a1a78f6eaed8a3176fb55d0e063e4306","schema_version":"1.0","event_id":"sha256:3deabc58a7feb67b643258cc6d03d537a1a78f6eaed8a3176fb55d0e063e4306"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:IPXCUP7VHBRBLNC6V4Z3PP74XI","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"On the possibility of detecting ultra-short period exoplanets with LISA","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["gr-qc"],"primary_cat":"astro-ph.EP","authors_text":"Emanuele Berti, Kaze W. K. Wong, Kelly Holley-Bockelmann, William E. Gabella","submitted_at":"2018-08-21T18:00:00Z","abstract_excerpt":"Cunha et al. (2018) recently reexamined the possibility of detecting gravitational waves from exoplanets, claiming that three ultra-short period systems would be observable by LISA. We revisit their analysis and conclude that the currently known exoplanetary systems are unlikely to be detectable, even assuming a LISA observation time $T_{\\rm obs}=4$ yrs. Conclusive statements on the detectability of one of these systems, GP Com b, will require better knowledge of the system's properties, as well as more careful modeling of both LISA's response and the galactic confusion noise. Still, the possi"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1808.07055","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":"2026-05-17T23:59:51Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9uug6gtkYc3CrPVNoQnubMDyvD1p2Ciu7MjOW9GjtczdjKc26gryAhtz937DP7i8gww3hx+Y/xNfHt6rGBGzDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T00:34:22.018542Z"},"content_sha256":"cc77aaa93ffc243fd2259356b5996dd941250767c321db9ebdb557ffe9b87a67","schema_version":"1.0","event_id":"sha256:cc77aaa93ffc243fd2259356b5996dd941250767c321db9ebdb557ffe9b87a67"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/IPXCUP7VHBRBLNC6V4Z3PP74XI/bundle.json","state_url":"https://pith.science/pith/IPXCUP7VHBRBLNC6V4Z3PP74XI/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/IPXCUP7VHBRBLNC6V4Z3PP74XI/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":"2026-06-05T00:34:22Z","links":{"resolver":"https://pith.science/pith/IPXCUP7VHBRBLNC6V4Z3PP74XI","bundle":"https://pith.science/pith/IPXCUP7VHBRBLNC6V4Z3PP74XI/bundle.json","state":"https://pith.science/pith/IPXCUP7VHBRBLNC6V4Z3PP74XI/state.json","well_known_bundle":"https://pith.science/.well-known/pith/IPXCUP7VHBRBLNC6V4Z3PP74XI/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:IPXCUP7VHBRBLNC6V4Z3PP74XI","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":"06b868d9f95a8596684089ae109ee3d6a0a0ffc18d9adc09a60eb03ea728daa3","cross_cats_sorted":["gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2018-08-21T18:00:00Z","title_canon_sha256":"c04715807e91d236025630fc33388a5c817ce73bf1e4cd8256a0fabbf1848cdb"},"schema_version":"1.0","source":{"id":"1808.07055","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1808.07055","created_at":"2026-05-17T23:59:51Z"},{"alias_kind":"arxiv_version","alias_value":"1808.07055v2","created_at":"2026-05-17T23:59:51Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1808.07055","created_at":"2026-05-17T23:59:51Z"},{"alias_kind":"pith_short_12","alias_value":"IPXCUP7VHBRB","created_at":"2026-05-18T12:32:31Z"},{"alias_kind":"pith_short_16","alias_value":"IPXCUP7VHBRBLNC6","created_at":"2026-05-18T12:32:31Z"},{"alias_kind":"pith_short_8","alias_value":"IPXCUP7V","created_at":"2026-05-18T12:32:31Z"}],"graph_snapshots":[{"event_id":"sha256:cc77aaa93ffc243fd2259356b5996dd941250767c321db9ebdb557ffe9b87a67","target":"graph","created_at":"2026-05-17T23:59:51Z","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":"Cunha et al. (2018) recently reexamined the possibility of detecting gravitational waves from exoplanets, claiming that three ultra-short period systems would be observable by LISA. We revisit their analysis and conclude that the currently known exoplanetary systems are unlikely to be detectable, even assuming a LISA observation time $T_{\\rm obs}=4$ yrs. Conclusive statements on the detectability of one of these systems, GP Com b, will require better knowledge of the system's properties, as well as more careful modeling of both LISA's response and the galactic confusion noise. Still, the possi","authors_text":"Emanuele Berti, Kaze W. K. Wong, Kelly Holley-Bockelmann, William E. Gabella","cross_cats":["gr-qc"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2018-08-21T18:00:00Z","title":"On the possibility of detecting ultra-short period exoplanets with LISA"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1808.07055","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":"sha256:3deabc58a7feb67b643258cc6d03d537a1a78f6eaed8a3176fb55d0e063e4306","target":"record","created_at":"2026-05-17T23:59:51Z","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":"06b868d9f95a8596684089ae109ee3d6a0a0ffc18d9adc09a60eb03ea728daa3","cross_cats_sorted":["gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2018-08-21T18:00:00Z","title_canon_sha256":"c04715807e91d236025630fc33388a5c817ce73bf1e4cd8256a0fabbf1848cdb"},"schema_version":"1.0","source":{"id":"1808.07055","kind":"arxiv","version":2}},"canonical_sha256":"43ee2a3ff5386215b45eaf33b7bffcba34e039818059d6e14b2db52ed71210b3","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"43ee2a3ff5386215b45eaf33b7bffcba34e039818059d6e14b2db52ed71210b3","first_computed_at":"2026-05-17T23:59:51.799299Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:59:51.799299Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"G9hEMPhPBwPKE/wSiSdeGzcSzScvWZJnBqp37Gix6+EHJDRPBBvUbVb/79VWuEfkQ7bTd009XnpOifN/wNCRCQ==","signature_status":"signed_v1","signed_at":"2026-05-17T23:59:51.799784Z","signed_message":"canonical_sha256_bytes"},"source_id":"1808.07055","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3deabc58a7feb67b643258cc6d03d537a1a78f6eaed8a3176fb55d0e063e4306","sha256:cc77aaa93ffc243fd2259356b5996dd941250767c321db9ebdb557ffe9b87a67"],"state_sha256":"227c48f69e5cdff47b36e43912c93008f50ab0bd79050a7049024ea4ce6b7f40"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"kePefaEym80xs9LdYBsfUK5lbCNZpX/TDRy5G0lhruOQT2/aag5ZwZAM5V2S1//xLzLc/2r73ZrG+kGnbFGtBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-05T00:34:22.021719Z","bundle_sha256":"1d35fb98eb6a3176ed26c201748bb9a891eddb80dfe5cb37d9d6b7ad54ab9e22"}}