{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:MM5QWDMMEZZV77YOU3SQ6WHPR5","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":"1d2d71b2d4420c3b5dde13c13ceff75b48582f4371ec62ccf764b2034e2bbb55","cross_cats_sorted":["astro-ph.IM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2016-01-15T15:05:30Z","title_canon_sha256":"99726b7a3142d1da00e4e1e5013326a1ecd723144c8a6b7c81dcd3b89e08e571"},"schema_version":"1.0","source":{"id":"1601.03948","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1601.03948","created_at":"2026-05-18T01:01:28Z"},{"alias_kind":"arxiv_version","alias_value":"1601.03948v2","created_at":"2026-05-18T01:01:28Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1601.03948","created_at":"2026-05-18T01:01:28Z"},{"alias_kind":"pith_short_12","alias_value":"MM5QWDMMEZZV","created_at":"2026-05-18T12:30:32Z"},{"alias_kind":"pith_short_16","alias_value":"MM5QWDMMEZZV77YO","created_at":"2026-05-18T12:30:32Z"},{"alias_kind":"pith_short_8","alias_value":"MM5QWDMM","created_at":"2026-05-18T12:30:32Z"}],"graph_snapshots":[{"event_id":"sha256:c2ec2f7329bca1b4218d0cfe077c20c0dcaa884544e287f22bc5424eab27e7e1","target":"graph","created_at":"2026-05-18T01:01:28Z","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 construct a pipeline for simulating weak lensing cosmology surveys with the Square Kilometre Array (SKA), taking as inputs telescope sensitivity curves; correlated source flux, size and redshift distributions; a simple ionospheric model; source redshift and ellipticity measurement errors. We then use this simulation pipeline to optimise a 2-year weak lensing survey performed with the first deployment of the SKA (SKA1). Our assessments are based on the total signal-to-noise of the recovered shear power spectra, a metric that we find to correlate very well with a standard dark energy figure o","authors_text":"Anna Bonaldi, Ian Harrison, Michael L. Brown, Stefano Camera","cross_cats":["astro-ph.IM"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2016-01-15T15:05:30Z","title":"SKA Weak Lensing II: Simulated Performance and Survey Design Considerations"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1601.03948","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":"sha256:9939bad38a4f87411ac7ff45ab4b5db4e874ef5b71449253a678ea0a8127655a","target":"record","created_at":"2026-05-18T01:01:28Z","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":"1d2d71b2d4420c3b5dde13c13ceff75b48582f4371ec62ccf764b2034e2bbb55","cross_cats_sorted":["astro-ph.IM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2016-01-15T15:05:30Z","title_canon_sha256":"99726b7a3142d1da00e4e1e5013326a1ecd723144c8a6b7c81dcd3b89e08e571"},"schema_version":"1.0","source":{"id":"1601.03948","kind":"arxiv","version":2}},"canonical_sha256":"633b0b0d8c26735fff0ea6e50f58ef8f47f3b90622da131a5cb37902565dbdd1","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"633b0b0d8c26735fff0ea6e50f58ef8f47f3b90622da131a5cb37902565dbdd1","first_computed_at":"2026-05-18T01:01:28.807571Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:01:28.807571Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"h4nNtseBQeGYs65XkXG8fKpyr7nvY9qIP8LAlykAMd19iTEgmecAJ/lMDWH8DHthsiARzNffPc02jW5iljVKDw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:01:28.808002Z","signed_message":"canonical_sha256_bytes"},"source_id":"1601.03948","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9939bad38a4f87411ac7ff45ab4b5db4e874ef5b71449253a678ea0a8127655a","sha256:c2ec2f7329bca1b4218d0cfe077c20c0dcaa884544e287f22bc5424eab27e7e1"],"state_sha256":"7bba997680c957ded3052ade1b229806718848788987b699b4428876eafc1c84"}