{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:UJRCLZF5HKKUMKBGD5YDQFZCQM","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":"7ac65111f5d7969706434077355929043549e40661a345c509421836ab1e3ced","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2016-11-14T21:00:03Z","title_canon_sha256":"8609f0def263e2c07513006e479b4a2eb58fb1d6da07020806e19540dab24d8e"},"schema_version":"1.0","source":{"id":"1611.04602","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1611.04602","created_at":"2026-05-18T00:45:06Z"},{"alias_kind":"arxiv_version","alias_value":"1611.04602v2","created_at":"2026-05-18T00:45:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1611.04602","created_at":"2026-05-18T00:45:06Z"},{"alias_kind":"pith_short_12","alias_value":"UJRCLZF5HKKU","created_at":"2026-05-18T12:30:46Z"},{"alias_kind":"pith_short_16","alias_value":"UJRCLZF5HKKUMKBG","created_at":"2026-05-18T12:30:46Z"},{"alias_kind":"pith_short_8","alias_value":"UJRCLZF5","created_at":"2026-05-18T12:30:46Z"}],"graph_snapshots":[{"event_id":"sha256:a588913332133761840eed6d4944b55b7f390faf82d289234c91e693f12c5051","target":"graph","created_at":"2026-05-18T00:45:06Z","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":"Cosmic baryon evolution during the Cosmic Dawn and Reionization results in redshifted 21-cm spectral distortions in the cosmic microwave background (CMB). These encode information about the nature and timing of first sources over redshifts 30-6 and appear at meter wavelengths as a tiny CMB distortion along with the Galactic and extragalactic radio sky, which is orders of magnitude brighter. Therefore, detection requires precise methods to model foregrounds. We present a method of foreground fitting using maximally smooth (MS) functions. We demonstrate the usefulness of MS functions over tradit","authors_text":"Jens Chluba, Mayuri Sathyanarayana Rao, N Udaya Shankar, Ravi Subrahmanyan","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2016-11-14T21:00:03Z","title":"Modeling the Radio Foreground for detection of CMB spectral distortions from Cosmic Dawn and Epoch of Reionization"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1611.04602","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:eeeeec68bf5c31845e734d255d634d8bc69e0e63fe76cd7cf99b35f06a591354","target":"record","created_at":"2026-05-18T00:45:06Z","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":"7ac65111f5d7969706434077355929043549e40661a345c509421836ab1e3ced","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2016-11-14T21:00:03Z","title_canon_sha256":"8609f0def263e2c07513006e479b4a2eb58fb1d6da07020806e19540dab24d8e"},"schema_version":"1.0","source":{"id":"1611.04602","kind":"arxiv","version":2}},"canonical_sha256":"a26225e4bd3a954628261f7038172283201a93c5143e4df4f8b236c30cfe0e11","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a26225e4bd3a954628261f7038172283201a93c5143e4df4f8b236c30cfe0e11","first_computed_at":"2026-05-18T00:45:06.326265Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:45:06.326265Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"HM1PcfK306eSZQVOhJhqS0sZJ7ndRfB6oRWoqnnltshCrzmnjtlUNr2c73TgmG6jc9H79CHnvEjhAmtVQqR3CQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:45:06.326717Z","signed_message":"canonical_sha256_bytes"},"source_id":"1611.04602","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:eeeeec68bf5c31845e734d255d634d8bc69e0e63fe76cd7cf99b35f06a591354","sha256:a588913332133761840eed6d4944b55b7f390faf82d289234c91e693f12c5051"],"state_sha256":"92d9db402efe170ef16147766dffd8f4b0b7077673572cea5bc6c6221bca82d3"}