{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2017:2L4QTUYIPHEQ7LTPN4AFZSU4EM","short_pith_number":"pith:2L4QTUYI","schema_version":"1.0","canonical_sha256":"d2f909d30879c90fae6f6f005cca9c23040d0c2fc3ab064c6512f22be2def69d","source":{"kind":"arxiv","id":"1706.09033","version":1},"attestation_state":"computed","paper":{"title":"Validating a novel angular power spectrum estimator using simulated low frequency radio-interferometric data","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"Abhik Ghosh, Nirupam Roy, Prasun Dutta, Samir Choudhuri, Sk. Saiyad Ali, Somnath Bharadwaj","submitted_at":"2017-06-27T20:05:51Z","abstract_excerpt":"The \"Tapered Gridded Estimator\" (TGE) is a novel way to directly estimate the angular power spectrum from radio-interferometric visibility data that reduces the computation by efficiently gridding the data, consistently removes the noise bias, and suppresses the foreground contamination to a large extent by tapering the primary beam response through an appropriate convolution in the visibility domain. Here we demonstrate the effectiveness of TGE in recovering the diffuse emission power spectrum through numerical simulations. We present details of the simulation used to generate low frequency v"},"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":"1706.09033","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2017-06-27T20:05:51Z","cross_cats_sorted":[],"title_canon_sha256":"64b521484c3a32396bbb5187dabfa629013d71deee68af126acb816da97612d8","abstract_canon_sha256":"ebedca2b32d438872ab7fcc61d5edf6ec321e02f227cab2201fe80888eca19f8"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:39:25.523956Z","signature_b64":"X7n03EEDkxE3cwSdi+ImNqYi8fE9ScUSOWGZUHRuYKFx39I2zWNcSpVNWTrRCYYybm+1e503VgqlG9czy+vzAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d2f909d30879c90fae6f6f005cca9c23040d0c2fc3ab064c6512f22be2def69d","last_reissued_at":"2026-05-18T00:39:25.523282Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:39:25.523282Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Validating a novel angular power spectrum estimator using simulated low frequency radio-interferometric data","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"Abhik Ghosh, Nirupam Roy, Prasun Dutta, Samir Choudhuri, Sk. Saiyad Ali, Somnath Bharadwaj","submitted_at":"2017-06-27T20:05:51Z","abstract_excerpt":"The \"Tapered Gridded Estimator\" (TGE) is a novel way to directly estimate the angular power spectrum from radio-interferometric visibility data that reduces the computation by efficiently gridding the data, consistently removes the noise bias, and suppresses the foreground contamination to a large extent by tapering the primary beam response through an appropriate convolution in the visibility domain. Here we demonstrate the effectiveness of TGE in recovering the diffuse emission power spectrum through numerical simulations. We present details of the simulation used to generate low frequency v"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1706.09033","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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1706.09033","created_at":"2026-05-18T00:39:25.523393+00:00"},{"alias_kind":"arxiv_version","alias_value":"1706.09033v1","created_at":"2026-05-18T00:39:25.523393+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1706.09033","created_at":"2026-05-18T00:39:25.523393+00:00"},{"alias_kind":"pith_short_12","alias_value":"2L4QTUYIPHEQ","created_at":"2026-05-18T12:30:55.937587+00:00"},{"alias_kind":"pith_short_16","alias_value":"2L4QTUYIPHEQ7LTP","created_at":"2026-05-18T12:30:55.937587+00:00"},{"alias_kind":"pith_short_8","alias_value":"2L4QTUYI","created_at":"2026-05-18T12:30:55.937587+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/2L4QTUYIPHEQ7LTPN4AFZSU4EM","json":"https://pith.science/pith/2L4QTUYIPHEQ7LTPN4AFZSU4EM.json","graph_json":"https://pith.science/api/pith-number/2L4QTUYIPHEQ7LTPN4AFZSU4EM/graph.json","events_json":"https://pith.science/api/pith-number/2L4QTUYIPHEQ7LTPN4AFZSU4EM/events.json","paper":"https://pith.science/paper/2L4QTUYI"},"agent_actions":{"view_html":"https://pith.science/pith/2L4QTUYIPHEQ7LTPN4AFZSU4EM","download_json":"https://pith.science/pith/2L4QTUYIPHEQ7LTPN4AFZSU4EM.json","view_paper":"https://pith.science/paper/2L4QTUYI","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1706.09033&json=true","fetch_graph":"https://pith.science/api/pith-number/2L4QTUYIPHEQ7LTPN4AFZSU4EM/graph.json","fetch_events":"https://pith.science/api/pith-number/2L4QTUYIPHEQ7LTPN4AFZSU4EM/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/2L4QTUYIPHEQ7LTPN4AFZSU4EM/action/timestamp_anchor","attest_storage":"https://pith.science/pith/2L4QTUYIPHEQ7LTPN4AFZSU4EM/action/storage_attestation","attest_author":"https://pith.science/pith/2L4QTUYIPHEQ7LTPN4AFZSU4EM/action/author_attestation","sign_citation":"https://pith.science/pith/2L4QTUYIPHEQ7LTPN4AFZSU4EM/action/citation_signature","submit_replication":"https://pith.science/pith/2L4QTUYIPHEQ7LTPN4AFZSU4EM/action/replication_record"}},"created_at":"2026-05-18T00:39:25.523393+00:00","updated_at":"2026-05-18T00:39:25.523393+00:00"}