{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2008:GPGDW4AFANQ4CWVBQEHJHIU3KM","short_pith_number":"pith:GPGDW4AF","schema_version":"1.0","canonical_sha256":"33cc3b70050361c15aa1810e93a29b5317f69722e18c80aea7926b1e27322531","source":{"kind":"arxiv","id":"0805.4238","version":2},"attestation_state":"computed","paper":{"title":"Extracting Angular Diameter Distance and Expansion Rate of the Universe from Two-dimensional Galaxy Power Spectrum at High Redshifts: Baryon Acoustic Oscillation Fitting versus Full Modeling","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"Austin), Donghui Jeong, Eiichiro Komatsu (Univ. of Texas, Masatoshi Shoji","submitted_at":"2008-05-28T00:02:58Z","abstract_excerpt":"We present a method for extracting the angular diameter distances, $D_A$, and the expansion rates, $H$, of the universe from the {\\it two-dimensional} Baryon Acoustic Oscillations (BAO) in the galaxy power spectrum. Our method builds upon the existing algorithm called the \"fit-and-extract\" (FITEX) method, which allows one to extract only $D_A^2/H$ from a spherically averaged one-dimensional power spectrum. We develop the FITEX-2d method, an extension of the FITEX method, to include the two-dimensional information, which allows us to extract $D_A$ and $H$ simultaneously. We test the FITEX-2d me"},"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":"0805.4238","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-05-28T00:02:58Z","cross_cats_sorted":[],"title_canon_sha256":"9efa7df84e58015b2e1d24c04c11557a1d4d5397c5c4e832922abbe1be0f0f04","abstract_canon_sha256":"e90684ffc6b185186c8e423ceec0c24277fa9d70e490c48b97d4019b446da55b"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:29:33.537366Z","signature_b64":"7gxW8bmkE1peTivlKYkqzAX/UWV4BoPP9fuYzT008glPIeutNmbOsdl8f2+C3RD9M7dUewCv/AT4NiUUTwrMBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"33cc3b70050361c15aa1810e93a29b5317f69722e18c80aea7926b1e27322531","last_reissued_at":"2026-05-18T04:29:33.536967Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:29:33.536967Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Extracting Angular Diameter Distance and Expansion Rate of the Universe from Two-dimensional Galaxy Power Spectrum at High Redshifts: Baryon Acoustic Oscillation Fitting versus Full Modeling","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"Austin), Donghui Jeong, Eiichiro Komatsu (Univ. of Texas, Masatoshi Shoji","submitted_at":"2008-05-28T00:02:58Z","abstract_excerpt":"We present a method for extracting the angular diameter distances, $D_A$, and the expansion rates, $H$, of the universe from the {\\it two-dimensional} Baryon Acoustic Oscillations (BAO) in the galaxy power spectrum. Our method builds upon the existing algorithm called the \"fit-and-extract\" (FITEX) method, which allows one to extract only $D_A^2/H$ from a spherically averaged one-dimensional power spectrum. We develop the FITEX-2d method, an extension of the FITEX method, to include the two-dimensional information, which allows us to extract $D_A$ and $H$ simultaneously. We test the FITEX-2d me"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0805.4238","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":"0805.4238","created_at":"2026-05-18T04:29:33.537029+00:00"},{"alias_kind":"arxiv_version","alias_value":"0805.4238v2","created_at":"2026-05-18T04:29:33.537029+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0805.4238","created_at":"2026-05-18T04:29:33.537029+00:00"},{"alias_kind":"pith_short_12","alias_value":"GPGDW4AFANQ4","created_at":"2026-05-18T12:25:57.157939+00:00"},{"alias_kind":"pith_short_16","alias_value":"GPGDW4AFANQ4CWVB","created_at":"2026-05-18T12:25:57.157939+00:00"},{"alias_kind":"pith_short_8","alias_value":"GPGDW4AF","created_at":"2026-05-18T12:25:57.157939+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/GPGDW4AFANQ4CWVBQEHJHIU3KM","json":"https://pith.science/pith/GPGDW4AFANQ4CWVBQEHJHIU3KM.json","graph_json":"https://pith.science/api/pith-number/GPGDW4AFANQ4CWVBQEHJHIU3KM/graph.json","events_json":"https://pith.science/api/pith-number/GPGDW4AFANQ4CWVBQEHJHIU3KM/events.json","paper":"https://pith.science/paper/GPGDW4AF"},"agent_actions":{"view_html":"https://pith.science/pith/GPGDW4AFANQ4CWVBQEHJHIU3KM","download_json":"https://pith.science/pith/GPGDW4AFANQ4CWVBQEHJHIU3KM.json","view_paper":"https://pith.science/paper/GPGDW4AF","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=0805.4238&json=true","fetch_graph":"https://pith.science/api/pith-number/GPGDW4AFANQ4CWVBQEHJHIU3KM/graph.json","fetch_events":"https://pith.science/api/pith-number/GPGDW4AFANQ4CWVBQEHJHIU3KM/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/GPGDW4AFANQ4CWVBQEHJHIU3KM/action/timestamp_anchor","attest_storage":"https://pith.science/pith/GPGDW4AFANQ4CWVBQEHJHIU3KM/action/storage_attestation","attest_author":"https://pith.science/pith/GPGDW4AFANQ4CWVBQEHJHIU3KM/action/author_attestation","sign_citation":"https://pith.science/pith/GPGDW4AFANQ4CWVBQEHJHIU3KM/action/citation_signature","submit_replication":"https://pith.science/pith/GPGDW4AFANQ4CWVBQEHJHIU3KM/action/replication_record"}},"created_at":"2026-05-18T04:29:33.537029+00:00","updated_at":"2026-05-18T04:29:33.537029+00:00"}