{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2012:KRIXHYFLSTILJ4J4W6OMC25ZGI","short_pith_number":"pith:KRIXHYFL","schema_version":"1.0","canonical_sha256":"545173e0ab94d0b4f13cb79cc16bb9323ba4dec3ad01a28fc2ca374cb1cabf45","source":{"kind":"arxiv","id":"1212.4500","version":2},"attestation_state":"computed","paper":{"title":"Systematic effects in large-scale angular power spectra of photometric quasars and implications for constraining primordial nongaussianity","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"Anthony R. Pullen, Christopher M. Hirata","submitted_at":"2012-12-18T21:00:05Z","abstract_excerpt":"Primordial non-Gaussianity of local type is predicted to lead to enhanced halo clustering on very large scales. Photometric quasars, which can be seen from cosmological redshifts z>2 even in wide-shallow optical surveys, are promising tracers for constraining non-Gaussianity using this effect. However, large-scale systematics can also mimic this signature of non-Gaussianity. In order to assess the contribution of systematic effects, we cross-correlate overdensity maps of photometric quasars from the Sloan Digital Sky Survey (SDSS) Data Release 6 (DR6) in different redshift ranges. We find that"},"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":"1212.4500","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-12-18T21:00:05Z","cross_cats_sorted":[],"title_canon_sha256":"aadf252d658dbf211aba19fa3152a21b5ae751cafb6b120eae7c20221ccaa0ef","abstract_canon_sha256":"0c66ab825460e88e4d96df4c1741ace8939e3e0b2e654de14c455cc97a94ec2a"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:18:30.335225Z","signature_b64":"06oiz17ptIYXNzZaXbyD8SdzL+pXuaVnUDP7oROulhgAfTtFnJfrjVIK2k79CRcXY2ytkE5uQf+Xo5M62ckrCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"545173e0ab94d0b4f13cb79cc16bb9323ba4dec3ad01a28fc2ca374cb1cabf45","last_reissued_at":"2026-05-18T03:18:30.334308Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:18:30.334308Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Systematic effects in large-scale angular power spectra of photometric quasars and implications for constraining primordial nongaussianity","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"Anthony R. Pullen, Christopher M. Hirata","submitted_at":"2012-12-18T21:00:05Z","abstract_excerpt":"Primordial non-Gaussianity of local type is predicted to lead to enhanced halo clustering on very large scales. Photometric quasars, which can be seen from cosmological redshifts z>2 even in wide-shallow optical surveys, are promising tracers for constraining non-Gaussianity using this effect. However, large-scale systematics can also mimic this signature of non-Gaussianity. In order to assess the contribution of systematic effects, we cross-correlate overdensity maps of photometric quasars from the Sloan Digital Sky Survey (SDSS) Data Release 6 (DR6) in different redshift ranges. We find that"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1212.4500","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":"1212.4500","created_at":"2026-05-18T03:18:30.334479+00:00"},{"alias_kind":"arxiv_version","alias_value":"1212.4500v2","created_at":"2026-05-18T03:18:30.334479+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1212.4500","created_at":"2026-05-18T03:18:30.334479+00:00"},{"alias_kind":"pith_short_12","alias_value":"KRIXHYFLSTIL","created_at":"2026-05-18T12:27:11.947152+00:00"},{"alias_kind":"pith_short_16","alias_value":"KRIXHYFLSTILJ4J4","created_at":"2026-05-18T12:27:11.947152+00:00"},{"alias_kind":"pith_short_8","alias_value":"KRIXHYFL","created_at":"2026-05-18T12:27:11.947152+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":1,"internal_anchor_count":1,"sample":[{"citing_arxiv_id":"2512.17865","citing_title":"Constraining primordial non-Gaussianity from DESI DR1 quasars and Planck PR4 CMB Lensing","ref_index":15,"is_internal_anchor":true}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/KRIXHYFLSTILJ4J4W6OMC25ZGI","json":"https://pith.science/pith/KRIXHYFLSTILJ4J4W6OMC25ZGI.json","graph_json":"https://pith.science/api/pith-number/KRIXHYFLSTILJ4J4W6OMC25ZGI/graph.json","events_json":"https://pith.science/api/pith-number/KRIXHYFLSTILJ4J4W6OMC25ZGI/events.json","paper":"https://pith.science/paper/KRIXHYFL"},"agent_actions":{"view_html":"https://pith.science/pith/KRIXHYFLSTILJ4J4W6OMC25ZGI","download_json":"https://pith.science/pith/KRIXHYFLSTILJ4J4W6OMC25ZGI.json","view_paper":"https://pith.science/paper/KRIXHYFL","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1212.4500&json=true","fetch_graph":"https://pith.science/api/pith-number/KRIXHYFLSTILJ4J4W6OMC25ZGI/graph.json","fetch_events":"https://pith.science/api/pith-number/KRIXHYFLSTILJ4J4W6OMC25ZGI/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/KRIXHYFLSTILJ4J4W6OMC25ZGI/action/timestamp_anchor","attest_storage":"https://pith.science/pith/KRIXHYFLSTILJ4J4W6OMC25ZGI/action/storage_attestation","attest_author":"https://pith.science/pith/KRIXHYFLSTILJ4J4W6OMC25ZGI/action/author_attestation","sign_citation":"https://pith.science/pith/KRIXHYFLSTILJ4J4W6OMC25ZGI/action/citation_signature","submit_replication":"https://pith.science/pith/KRIXHYFLSTILJ4J4W6OMC25ZGI/action/replication_record"}},"created_at":"2026-05-18T03:18:30.334479+00:00","updated_at":"2026-05-18T03:18:30.334479+00:00"}