{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2012:KJMNAYW4FP4FKD6UZGGELQJUFH","short_pith_number":"pith:KJMNAYW4","schema_version":"1.0","canonical_sha256":"5258d062dc2bf8550fd4c98c45c13429c4d5c90659cdaca2d0d0b7083580d0b7","source":{"kind":"arxiv","id":"1212.6658","version":2},"attestation_state":"computed","paper":{"title":"CMB lensing reconstruction from the WMAP 7-year data","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"C. Sofia Carvalho, Ismael Tereno, Spyros Basilakos","submitted_at":"2012-12-29T20:14:15Z","abstract_excerpt":"We attempt to make a direct measurement of the weak lensing signal from the WMAP 7-year data. We apply the real-space implementation of the optimal quadratic estimator on the maps produced by the W-band Differencing Assemblies. We obtain a weak lensing amplitude parameter of $A_{L}=0.99\\pm1.67$ after correcting for several sources of bias. The error budget includes a contribution from the bias removal procedure. Despite the demonstrated insensitivity of the real-space estimator to uncorrelated noise, we conclude that this detection is not statistically significant. We expect that a full-sky, h"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1212.6658","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-12-29T20:14:15Z","cross_cats_sorted":[],"title_canon_sha256":"edad745afd7f005831ed44760234314af2f2e6d91e9eddc51831ef4124d5e2ef","abstract_canon_sha256":"e2c8e184ce0fff1b4902831d2e0414ff5dd21e72f70edf0495d6bf4dcee823cb"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:52:22.867771Z","signature_b64":"YQ7Nb2KYvyVYqrToNS93uGZKU3ISKz52tbSBx6n2r3Hj1gz3BYm45IoA0/2wrZ7VgAiB5E6CLIMMuasQKg75CQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"5258d062dc2bf8550fd4c98c45c13429c4d5c90659cdaca2d0d0b7083580d0b7","last_reissued_at":"2026-05-18T01:52:22.867340Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:52:22.867340Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"CMB lensing reconstruction from the WMAP 7-year data","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"C. Sofia Carvalho, Ismael Tereno, Spyros Basilakos","submitted_at":"2012-12-29T20:14:15Z","abstract_excerpt":"We attempt to make a direct measurement of the weak lensing signal from the WMAP 7-year data. We apply the real-space implementation of the optimal quadratic estimator on the maps produced by the W-band Differencing Assemblies. We obtain a weak lensing amplitude parameter of $A_{L}=0.99\\pm1.67$ after correcting for several sources of bias. The error budget includes a contribution from the bias removal procedure. Despite the demonstrated insensitivity of the real-space estimator to uncorrelated noise, we conclude that this detection is not statistically significant. We expect that a full-sky, h"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1212.6658","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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1212.6658","created_at":"2026-05-18T01:52:22.867411+00:00"},{"alias_kind":"arxiv_version","alias_value":"1212.6658v2","created_at":"2026-05-18T01:52:22.867411+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1212.6658","created_at":"2026-05-18T01:52:22.867411+00:00"},{"alias_kind":"pith_short_12","alias_value":"KJMNAYW4FP4F","created_at":"2026-05-18T12:27:11.947152+00:00"},{"alias_kind":"pith_short_16","alias_value":"KJMNAYW4FP4FKD6U","created_at":"2026-05-18T12:27:11.947152+00:00"},{"alias_kind":"pith_short_8","alias_value":"KJMNAYW4","created_at":"2026-05-18T12:27:11.947152+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/KJMNAYW4FP4FKD6UZGGELQJUFH","json":"https://pith.science/pith/KJMNAYW4FP4FKD6UZGGELQJUFH.json","graph_json":"https://pith.science/api/pith-number/KJMNAYW4FP4FKD6UZGGELQJUFH/graph.json","events_json":"https://pith.science/api/pith-number/KJMNAYW4FP4FKD6UZGGELQJUFH/events.json","paper":"https://pith.science/paper/KJMNAYW4"},"agent_actions":{"view_html":"https://pith.science/pith/KJMNAYW4FP4FKD6UZGGELQJUFH","download_json":"https://pith.science/pith/KJMNAYW4FP4FKD6UZGGELQJUFH.json","view_paper":"https://pith.science/paper/KJMNAYW4","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1212.6658&json=true","fetch_graph":"https://pith.science/api/pith-number/KJMNAYW4FP4FKD6UZGGELQJUFH/graph.json","fetch_events":"https://pith.science/api/pith-number/KJMNAYW4FP4FKD6UZGGELQJUFH/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/KJMNAYW4FP4FKD6UZGGELQJUFH/action/timestamp_anchor","attest_storage":"https://pith.science/pith/KJMNAYW4FP4FKD6UZGGELQJUFH/action/storage_attestation","attest_author":"https://pith.science/pith/KJMNAYW4FP4FKD6UZGGELQJUFH/action/author_attestation","sign_citation":"https://pith.science/pith/KJMNAYW4FP4FKD6UZGGELQJUFH/action/citation_signature","submit_replication":"https://pith.science/pith/KJMNAYW4FP4FKD6UZGGELQJUFH/action/replication_record"}},"created_at":"2026-05-18T01:52:22.867411+00:00","updated_at":"2026-05-18T01:52:22.867411+00:00"}