{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:3UXYIQHG5REJF3RGY7RLUEWR2C","short_pith_number":"pith:3UXYIQHG","canonical_record":{"source":{"id":"1211.2822","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-11-12T21:02:53Z","cross_cats_sorted":[],"title_canon_sha256":"7ac9c3869e15af29125a532548d8a5183d93758a980b105110f48b611df764e1","abstract_canon_sha256":"0d2211efdeb81c1ede6f2033806efd123b0c82861f242738458078bfc7406d05"},"schema_version":"1.0"},"canonical_sha256":"dd2f8440e6ec4892ee26c7e2ba12d1d0b17e213c54973fad930331ffb228d2d0","source":{"kind":"arxiv","id":"1211.2822","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1211.2822","created_at":"2026-05-18T01:53:16Z"},{"alias_kind":"arxiv_version","alias_value":"1211.2822v2","created_at":"2026-05-18T01:53:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1211.2822","created_at":"2026-05-18T01:53:16Z"},{"alias_kind":"pith_short_12","alias_value":"3UXYIQHG5REJ","created_at":"2026-05-18T12:26:53Z"},{"alias_kind":"pith_short_16","alias_value":"3UXYIQHG5REJF3RG","created_at":"2026-05-18T12:26:53Z"},{"alias_kind":"pith_short_8","alias_value":"3UXYIQHG","created_at":"2026-05-18T12:26:53Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:3UXYIQHG5REJF3RGY7RLUEWR2C","target":"record","payload":{"canonical_record":{"source":{"id":"1211.2822","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-11-12T21:02:53Z","cross_cats_sorted":[],"title_canon_sha256":"7ac9c3869e15af29125a532548d8a5183d93758a980b105110f48b611df764e1","abstract_canon_sha256":"0d2211efdeb81c1ede6f2033806efd123b0c82861f242738458078bfc7406d05"},"schema_version":"1.0"},"canonical_sha256":"dd2f8440e6ec4892ee26c7e2ba12d1d0b17e213c54973fad930331ffb228d2d0","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:53:16.479664Z","signature_b64":"bVB8JIMGA3RuYSnORYK8h5O3zZothId871m6Ck81NMXA+z0eqtcBBTo4A7YkCYd43paMih+QZQ148QY5QgwcAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"dd2f8440e6ec4892ee26c7e2ba12d1d0b17e213c54973fad930331ffb228d2d0","last_reissued_at":"2026-05-18T01:53:16.479262Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:53:16.479262Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1211.2822","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:53:16Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"z4ZXGidMc4QE13G+b8O8ZiAKOpdpC8GyOF84dyfIh3iVsTMoWRgWbpHgv6mYuPXiKSqG8aqv9b1eSoYIp9ZsBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-21T09:09:36.506990Z"},"content_sha256":"c856b0a2bee201bf12a235cef027de9c3856e8725878feb684fd680b1907100d","schema_version":"1.0","event_id":"sha256:c856b0a2bee201bf12a235cef027de9c3856e8725878feb684fd680b1907100d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:3UXYIQHG5REJF3RGY7RLUEWR2C","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Reionization on Large Scales II: Detecting Patchy Reionization through Cross Correlation of the Cosmic Microwave Background","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"Abraham Loeb (Harvard), Aravind Natarajan (CMU), Hy Trac (CMU), Nick Battaglia (CMU), Ue Li Pen (CITA)","submitted_at":"2012-11-12T21:02:53Z","abstract_excerpt":"We investigate the effect of patchy reionization on the cosmic microwave background temperature. An anisotropic optical depth tau (theta) alters the TT power spectrum on small scales l > 2000. We make use of the correlation between the matter density and the reionization redshift fields to construct full sky maps of tau(theta). Patchy reionization transfers CMB power from large scales to small scales, resulting in a non-zero cross correlation between large and small angular scales. We show that the patchy tau correlator is sensitive to small root mean square values tau_rms ~ 0.003 seen in our "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1211.2822","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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:53:16Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"IU5U8oCEH7odrZ9U77q7Ympbn3kyY9zzNxDyWgLg4p8uzxUrIaewITi8iYf3mtaNEZAMKLsDS8SD4CT6T+PPCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-21T09:09:36.507351Z"},"content_sha256":"ebba7ba2faa3e55cd0a04b0ec4b452064b122f6927dc4457e302cfde2440741b","schema_version":"1.0","event_id":"sha256:ebba7ba2faa3e55cd0a04b0ec4b452064b122f6927dc4457e302cfde2440741b"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/3UXYIQHG5REJF3RGY7RLUEWR2C/bundle.json","state_url":"https://pith.science/pith/3UXYIQHG5REJF3RGY7RLUEWR2C/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/3UXYIQHG5REJF3RGY7RLUEWR2C/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-05-21T09:09:36Z","links":{"resolver":"https://pith.science/pith/3UXYIQHG5REJF3RGY7RLUEWR2C","bundle":"https://pith.science/pith/3UXYIQHG5REJF3RGY7RLUEWR2C/bundle.json","state":"https://pith.science/pith/3UXYIQHG5REJF3RGY7RLUEWR2C/state.json","well_known_bundle":"https://pith.science/.well-known/pith/3UXYIQHG5REJF3RGY7RLUEWR2C/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:3UXYIQHG5REJF3RGY7RLUEWR2C","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":"0d2211efdeb81c1ede6f2033806efd123b0c82861f242738458078bfc7406d05","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-11-12T21:02:53Z","title_canon_sha256":"7ac9c3869e15af29125a532548d8a5183d93758a980b105110f48b611df764e1"},"schema_version":"1.0","source":{"id":"1211.2822","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1211.2822","created_at":"2026-05-18T01:53:16Z"},{"alias_kind":"arxiv_version","alias_value":"1211.2822v2","created_at":"2026-05-18T01:53:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1211.2822","created_at":"2026-05-18T01:53:16Z"},{"alias_kind":"pith_short_12","alias_value":"3UXYIQHG5REJ","created_at":"2026-05-18T12:26:53Z"},{"alias_kind":"pith_short_16","alias_value":"3UXYIQHG5REJF3RG","created_at":"2026-05-18T12:26:53Z"},{"alias_kind":"pith_short_8","alias_value":"3UXYIQHG","created_at":"2026-05-18T12:26:53Z"}],"graph_snapshots":[{"event_id":"sha256:ebba7ba2faa3e55cd0a04b0ec4b452064b122f6927dc4457e302cfde2440741b","target":"graph","created_at":"2026-05-18T01:53:16Z","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":"We investigate the effect of patchy reionization on the cosmic microwave background temperature. An anisotropic optical depth tau (theta) alters the TT power spectrum on small scales l > 2000. We make use of the correlation between the matter density and the reionization redshift fields to construct full sky maps of tau(theta). Patchy reionization transfers CMB power from large scales to small scales, resulting in a non-zero cross correlation between large and small angular scales. We show that the patchy tau correlator is sensitive to small root mean square values tau_rms ~ 0.003 seen in our ","authors_text":"Abraham Loeb (Harvard), Aravind Natarajan (CMU), Hy Trac (CMU), Nick Battaglia (CMU), Ue Li Pen (CITA)","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-11-12T21:02:53Z","title":"Reionization on Large Scales II: Detecting Patchy Reionization through Cross Correlation of the Cosmic Microwave Background"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1211.2822","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:c856b0a2bee201bf12a235cef027de9c3856e8725878feb684fd680b1907100d","target":"record","created_at":"2026-05-18T01:53:16Z","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":"0d2211efdeb81c1ede6f2033806efd123b0c82861f242738458078bfc7406d05","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-11-12T21:02:53Z","title_canon_sha256":"7ac9c3869e15af29125a532548d8a5183d93758a980b105110f48b611df764e1"},"schema_version":"1.0","source":{"id":"1211.2822","kind":"arxiv","version":2}},"canonical_sha256":"dd2f8440e6ec4892ee26c7e2ba12d1d0b17e213c54973fad930331ffb228d2d0","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"dd2f8440e6ec4892ee26c7e2ba12d1d0b17e213c54973fad930331ffb228d2d0","first_computed_at":"2026-05-18T01:53:16.479262Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:53:16.479262Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"bVB8JIMGA3RuYSnORYK8h5O3zZothId871m6Ck81NMXA+z0eqtcBBTo4A7YkCYd43paMih+QZQ148QY5QgwcAg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:53:16.479664Z","signed_message":"canonical_sha256_bytes"},"source_id":"1211.2822","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c856b0a2bee201bf12a235cef027de9c3856e8725878feb684fd680b1907100d","sha256:ebba7ba2faa3e55cd0a04b0ec4b452064b122f6927dc4457e302cfde2440741b"],"state_sha256":"966969247710d59a9594d6bcdb5060bafeff21e5d8ee94ba0a45cfc5b706e4fa"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"MvdgSSZkm8T5Vv8YEPG8Prrbn9diKJuwsV7WvGIEXZitmkDZOaelMXE4RdWzOiE1QP484w8bbFhXCKhZBFdGBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-21T09:09:36.509353Z","bundle_sha256":"05c227f503f06129b084131f91f1d6551a9e112f5059e4bdc48a17bfcb4ea91a"}}