{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:WP2C3AVYHSEFLURT3QJU66AFT4","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":"7529af371575054d465400c338e00329fb837891efbd3567153d3605229d813c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2010-09-30T20:05:14Z","title_canon_sha256":"5c6494ed6cf7d1d034b57e503808d1427128eeda90010648df6034d7f9d04650"},"schema_version":"1.0","source":{"id":"1010.0010","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1010.0010","created_at":"2026-05-18T02:05:12Z"},{"alias_kind":"arxiv_version","alias_value":"1010.0010v2","created_at":"2026-05-18T02:05:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1010.0010","created_at":"2026-05-18T02:05:12Z"},{"alias_kind":"pith_short_12","alias_value":"WP2C3AVYHSEF","created_at":"2026-05-18T12:26:17Z"},{"alias_kind":"pith_short_16","alias_value":"WP2C3AVYHSEFLURT","created_at":"2026-05-18T12:26:17Z"},{"alias_kind":"pith_short_8","alias_value":"WP2C3AVY","created_at":"2026-05-18T12:26:17Z"}],"graph_snapshots":[{"event_id":"sha256:dfd275e4fe04869364de10064822dff018ff007cd299d9aac29fb9518401bd8f","target":"graph","created_at":"2026-05-18T02:05:12Z","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 identify and study a previously unknown systematic effect on cosmic shear measurements, caused by the selection of galaxies used for shape measurement, in particular the rejection of close (blended) galaxy pairs. We use ray-tracing simulations based on the Millennium Simulation and a semi-analytical model of galaxy formation to create realistic galaxy catalogues. From these, we quantify the bias in the shear correlation functions by comparing measurements made from galaxy catalogues with and without removal of close pairs. A likelihood analysis is used to quantify the resulting shift in est","authors_text":"Hendrik Hildebrandt, Jan Hartlap, Peter Schneider, Stefan Hilbert","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2010-09-30T20:05:14Z","title":"A bias in cosmic shear from galaxy selection: results from ray-tracing simulations"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1010.0010","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:ff4e348978b76f70bdcaaf0828d701e701ab773e23b0733d64442a126cedc6e4","target":"record","created_at":"2026-05-18T02:05:12Z","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":"7529af371575054d465400c338e00329fb837891efbd3567153d3605229d813c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2010-09-30T20:05:14Z","title_canon_sha256":"5c6494ed6cf7d1d034b57e503808d1427128eeda90010648df6034d7f9d04650"},"schema_version":"1.0","source":{"id":"1010.0010","kind":"arxiv","version":2}},"canonical_sha256":"b3f42d82b83c8855d233dc134f78059f2d04a8dbee02e401fe71cb18677398fe","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b3f42d82b83c8855d233dc134f78059f2d04a8dbee02e401fe71cb18677398fe","first_computed_at":"2026-05-18T02:05:12.917072Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:05:12.917072Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ISp2qQ+it1aXxLqynVX+ovnI/CTI63j6vpbPeqNkl+mF6j6BOvWxiaM/NXznARWrxk0UEwkCV7aAd82PAWWdCg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:05:12.917817Z","signed_message":"canonical_sha256_bytes"},"source_id":"1010.0010","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ff4e348978b76f70bdcaaf0828d701e701ab773e23b0733d64442a126cedc6e4","sha256:dfd275e4fe04869364de10064822dff018ff007cd299d9aac29fb9518401bd8f"],"state_sha256":"20f5c89173dba650ce1e742cf1245c693b384478ce19a4ba953d9c6d15a726b4"}