{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:QYPW66SAKAW3ZNL4N7Z2ZLIUW6","short_pith_number":"pith:QYPW66SA","canonical_record":{"source":{"id":"1509.04290","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2015-09-14T20:13:44Z","cross_cats_sorted":[],"title_canon_sha256":"47333bd430c2c96b84e705859e77ec4d46ddaee950159ca0a5361ec86c874c95","abstract_canon_sha256":"b8068f0c858122c437b5abb1defbdcc5660a624069fe3456835f58bcc7be00b7"},"schema_version":"1.0"},"canonical_sha256":"861f6f7a40502dbcb57c6ff3acad14b78447691936845f9af6218c93f19c9246","source":{"kind":"arxiv","id":"1509.04290","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1509.04290","created_at":"2026-05-18T01:33:07Z"},{"alias_kind":"arxiv_version","alias_value":"1509.04290v1","created_at":"2026-05-18T01:33:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1509.04290","created_at":"2026-05-18T01:33:07Z"},{"alias_kind":"pith_short_12","alias_value":"QYPW66SAKAW3","created_at":"2026-05-18T12:29:39Z"},{"alias_kind":"pith_short_16","alias_value":"QYPW66SAKAW3ZNL4","created_at":"2026-05-18T12:29:39Z"},{"alias_kind":"pith_short_8","alias_value":"QYPW66SA","created_at":"2026-05-18T12:29:39Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:QYPW66SAKAW3ZNL4N7Z2ZLIUW6","target":"record","payload":{"canonical_record":{"source":{"id":"1509.04290","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2015-09-14T20:13:44Z","cross_cats_sorted":[],"title_canon_sha256":"47333bd430c2c96b84e705859e77ec4d46ddaee950159ca0a5361ec86c874c95","abstract_canon_sha256":"b8068f0c858122c437b5abb1defbdcc5660a624069fe3456835f58bcc7be00b7"},"schema_version":"1.0"},"canonical_sha256":"861f6f7a40502dbcb57c6ff3acad14b78447691936845f9af6218c93f19c9246","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:33:07.535788Z","signature_b64":"Mwe1LS6XhIKINfVSKHnIK6eHuW0raVknwZ1kW4sB0l1lxfuru3jNJ+pdZFIYy/08j5akf3fFxYgXVILvjs8hBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"861f6f7a40502dbcb57c6ff3acad14b78447691936845f9af6218c93f19c9246","last_reissued_at":"2026-05-18T01:33:07.535293Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:33:07.535293Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1509.04290","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":"2026-05-18T01:33:07Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"yQmS6K/F1q+KRqrTCcYQe3liBSIdlqAjM7NOkyswJ9WIOpEINri2PEErcWhi+0l3cEQkmmMtz7T0lYkmc4VZBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T14:50:13.411585Z"},"content_sha256":"653a927d52d6de422aa458fb550b12871d742b86db857604a9a7a6c76d75bbde","schema_version":"1.0","event_id":"sha256:653a927d52d6de422aa458fb550b12871d742b86db857604a9a7a6c76d75bbde"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:QYPW66SAKAW3ZNL4N7Z2ZLIUW6","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Mitigating Systematic Errors in Angular Correlation Function Measurements from Wide Field Surveys","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"Christopher Brian Morrison, Hendrik Hildebrandt","submitted_at":"2015-09-14T20:13:44Z","abstract_excerpt":"We present an investigation into the effects of survey systematics such as varying depth, point spread function (PSF) size, and extinction on the galaxy selection and correlation in photometric, multi-epoch, wide area surveys. We take the Canada-France-Hawaii Telescope Lensing Survey (CFHTLenS) as an example. Variations in galaxy selection due to systematics are found to cause density fluctuations of up to 10% for some small fraction of the area for most galaxy redshift slices and as much as 50% for some extreme cases of faint high-redshift samples. This results in correlations of galaxies aga"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1509.04290","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":"2026-05-18T01:33:07Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Da4qfecUIOBdHd4e9CGz72gLU6Y7PBNYdT/pZjCYEvKXjSiSlbkMb+QLeNNpG9XqbxrVbRC38yloqdf/hZExAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T14:50:13.411932Z"},"content_sha256":"f9c8b784e7e997cfc82239dadf18f7676ad4d964d4b87c87be19c4913c9eac76","schema_version":"1.0","event_id":"sha256:f9c8b784e7e997cfc82239dadf18f7676ad4d964d4b87c87be19c4913c9eac76"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/QYPW66SAKAW3ZNL4N7Z2ZLIUW6/bundle.json","state_url":"https://pith.science/pith/QYPW66SAKAW3ZNL4N7Z2ZLIUW6/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/QYPW66SAKAW3ZNL4N7Z2ZLIUW6/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":"2026-06-04T14:50:13Z","links":{"resolver":"https://pith.science/pith/QYPW66SAKAW3ZNL4N7Z2ZLIUW6","bundle":"https://pith.science/pith/QYPW66SAKAW3ZNL4N7Z2ZLIUW6/bundle.json","state":"https://pith.science/pith/QYPW66SAKAW3ZNL4N7Z2ZLIUW6/state.json","well_known_bundle":"https://pith.science/.well-known/pith/QYPW66SAKAW3ZNL4N7Z2ZLIUW6/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:QYPW66SAKAW3ZNL4N7Z2ZLIUW6","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":"b8068f0c858122c437b5abb1defbdcc5660a624069fe3456835f58bcc7be00b7","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2015-09-14T20:13:44Z","title_canon_sha256":"47333bd430c2c96b84e705859e77ec4d46ddaee950159ca0a5361ec86c874c95"},"schema_version":"1.0","source":{"id":"1509.04290","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1509.04290","created_at":"2026-05-18T01:33:07Z"},{"alias_kind":"arxiv_version","alias_value":"1509.04290v1","created_at":"2026-05-18T01:33:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1509.04290","created_at":"2026-05-18T01:33:07Z"},{"alias_kind":"pith_short_12","alias_value":"QYPW66SAKAW3","created_at":"2026-05-18T12:29:39Z"},{"alias_kind":"pith_short_16","alias_value":"QYPW66SAKAW3ZNL4","created_at":"2026-05-18T12:29:39Z"},{"alias_kind":"pith_short_8","alias_value":"QYPW66SA","created_at":"2026-05-18T12:29:39Z"}],"graph_snapshots":[{"event_id":"sha256:f9c8b784e7e997cfc82239dadf18f7676ad4d964d4b87c87be19c4913c9eac76","target":"graph","created_at":"2026-05-18T01:33:07Z","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 present an investigation into the effects of survey systematics such as varying depth, point spread function (PSF) size, and extinction on the galaxy selection and correlation in photometric, multi-epoch, wide area surveys. We take the Canada-France-Hawaii Telescope Lensing Survey (CFHTLenS) as an example. Variations in galaxy selection due to systematics are found to cause density fluctuations of up to 10% for some small fraction of the area for most galaxy redshift slices and as much as 50% for some extreme cases of faint high-redshift samples. This results in correlations of galaxies aga","authors_text":"Christopher Brian Morrison, Hendrik Hildebrandt","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2015-09-14T20:13:44Z","title":"Mitigating Systematic Errors in Angular Correlation Function Measurements from Wide Field Surveys"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1509.04290","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":"sha256:653a927d52d6de422aa458fb550b12871d742b86db857604a9a7a6c76d75bbde","target":"record","created_at":"2026-05-18T01:33:07Z","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":"b8068f0c858122c437b5abb1defbdcc5660a624069fe3456835f58bcc7be00b7","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2015-09-14T20:13:44Z","title_canon_sha256":"47333bd430c2c96b84e705859e77ec4d46ddaee950159ca0a5361ec86c874c95"},"schema_version":"1.0","source":{"id":"1509.04290","kind":"arxiv","version":1}},"canonical_sha256":"861f6f7a40502dbcb57c6ff3acad14b78447691936845f9af6218c93f19c9246","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"861f6f7a40502dbcb57c6ff3acad14b78447691936845f9af6218c93f19c9246","first_computed_at":"2026-05-18T01:33:07.535293Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:33:07.535293Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Mwe1LS6XhIKINfVSKHnIK6eHuW0raVknwZ1kW4sB0l1lxfuru3jNJ+pdZFIYy/08j5akf3fFxYgXVILvjs8hBw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:33:07.535788Z","signed_message":"canonical_sha256_bytes"},"source_id":"1509.04290","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:653a927d52d6de422aa458fb550b12871d742b86db857604a9a7a6c76d75bbde","sha256:f9c8b784e7e997cfc82239dadf18f7676ad4d964d4b87c87be19c4913c9eac76"],"state_sha256":"5d54b0f01d0f49d67cc5f2f051798130c5cbb239741489c51e5bd28b0d273e2f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Jb7RmcK+k4CbZSfZjFlpzSlQEWvuvYW0VL1FNPJ9tLSnzmZTfYjf5SlTogS5qSkzD6kwShCVP7LF7WsrLyGMDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-04T14:50:13.413904Z","bundle_sha256":"4844e20f1b704cf2d9a1b1032f709a4051401485fccc051bcc4496f672e22bc8"}}