{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:K4P7NKDBDFHTNHZY3TA6OPIDDB","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":"1c47a21f6da60f0cc53c342f7298e07b3d68b0e2c3482b39b432bf54c41a1f7f","cross_cats_sorted":["astro-ph.GA","astro-ph.IM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-04-12T00:27:24Z","title_canon_sha256":"fc93370d8c922bf611ffa34979cec737f897251423ebc45cdf677745a4aaebb3"},"schema_version":"1.0","source":{"id":"1104.2094","kind":"arxiv","version":4}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1104.2094","created_at":"2026-05-18T02:02:35Z"},{"alias_kind":"arxiv_version","alias_value":"1104.2094v4","created_at":"2026-05-18T02:02:35Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1104.2094","created_at":"2026-05-18T02:02:35Z"},{"alias_kind":"pith_short_12","alias_value":"K4P7NKDBDFHT","created_at":"2026-05-18T12:26:32Z"},{"alias_kind":"pith_short_16","alias_value":"K4P7NKDBDFHTNHZY","created_at":"2026-05-18T12:26:32Z"},{"alias_kind":"pith_short_8","alias_value":"K4P7NKDB","created_at":"2026-05-18T12:26:32Z"}],"graph_snapshots":[{"event_id":"sha256:7ecd1af47fb1f9df90ad9e40eabd2551946ae36b97e144a0b04d05254a1674a8","target":"graph","created_at":"2026-05-18T02:02:35Z","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":"The peculiar velocity of the intergalactic gas responsible for the cosmic 21cm background from the epoch of reionization and beyond introduces an anisotropy in the three-dimensional power spectrum of brightness temperature fluctuations. Measurement of this anisotropy by future 21cm surveys is a promising tool for separating cosmology from 21cm astrophysics. However, previous attempts to model the signal have often neglected peculiar velocity or only approximated it crudely. This paper re-examines the effects of peculiar velocity on the 21cm signal in detail, improving upon past treatment and a","authors_text":"((1) U Texas at Austin, (2) Stockholm U, (3) U Sussex, (4) Chosun U), Garrelt Mellema (2), Ilian T. Iliev (3), Jun Koda (1), Kyungjin Ahn (4), Paul R. Shapiro (1), Yi Mao (1)","cross_cats":["astro-ph.GA","astro-ph.IM"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-04-12T00:27:24Z","title":"Redshift Space Distortion of the 21cm Background from the Epoch of Reionization I: Methodology Re-examined"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1104.2094","kind":"arxiv","version":4},"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":"sha256:68fa4abf9fe289e671786a87270d64ba2336d955e9c2ff97e4466abb6443a054","target":"record","created_at":"2026-05-18T02:02:35Z","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":"1c47a21f6da60f0cc53c342f7298e07b3d68b0e2c3482b39b432bf54c41a1f7f","cross_cats_sorted":["astro-ph.GA","astro-ph.IM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-04-12T00:27:24Z","title_canon_sha256":"fc93370d8c922bf611ffa34979cec737f897251423ebc45cdf677745a4aaebb3"},"schema_version":"1.0","source":{"id":"1104.2094","kind":"arxiv","version":4}},"canonical_sha256":"571ff6a861194f369f38dcc1e73d031847358a45acfe1ba9559efa18acf25ca1","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"571ff6a861194f369f38dcc1e73d031847358a45acfe1ba9559efa18acf25ca1","first_computed_at":"2026-05-18T02:02:35.082222Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:02:35.082222Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"p9KQELkS6kCiVICdIetdTEXAhRYsv3U54LUhbVk+kW+4mHYl1oe6DFoYZ314j988wBPOBREHdn+Dnk+C8MCXBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T02:02:35.082956Z","signed_message":"canonical_sha256_bytes"},"source_id":"1104.2094","source_kind":"arxiv","source_version":4}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:68fa4abf9fe289e671786a87270d64ba2336d955e9c2ff97e4466abb6443a054","sha256:7ecd1af47fb1f9df90ad9e40eabd2551946ae36b97e144a0b04d05254a1674a8"],"state_sha256":"65750c4724946e1e98140372e43170f729877078086775e9cd22ea2d6433e5ca"}