{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:VTFSUMPBIQ3YDHCCU4XBGMJ5AP","short_pith_number":"pith:VTFSUMPB","canonical_record":{"source":{"id":"1608.00551","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2016-08-01T19:46:46Z","cross_cats_sorted":[],"title_canon_sha256":"76d7593cf096827d7d69c783a258b46d8f789d55915e187f4f50aac5967e9270","abstract_canon_sha256":"31237552f3a083651397180966d72c4d97fe8987abde6932a66301d7b0c52503"},"schema_version":"1.0"},"canonical_sha256":"accb2a31e14437819c42a72e13313d03e2bae726b6dcdbd04312e6edbe67d69d","source":{"kind":"arxiv","id":"1608.00551","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1608.00551","created_at":"2026-05-18T00:50:47Z"},{"alias_kind":"arxiv_version","alias_value":"1608.00551v1","created_at":"2026-05-18T00:50:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1608.00551","created_at":"2026-05-18T00:50:47Z"},{"alias_kind":"pith_short_12","alias_value":"VTFSUMPBIQ3Y","created_at":"2026-05-18T12:30:48Z"},{"alias_kind":"pith_short_16","alias_value":"VTFSUMPBIQ3YDHCC","created_at":"2026-05-18T12:30:48Z"},{"alias_kind":"pith_short_8","alias_value":"VTFSUMPB","created_at":"2026-05-18T12:30:48Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:VTFSUMPBIQ3YDHCCU4XBGMJ5AP","target":"record","payload":{"canonical_record":{"source":{"id":"1608.00551","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2016-08-01T19:46:46Z","cross_cats_sorted":[],"title_canon_sha256":"76d7593cf096827d7d69c783a258b46d8f789d55915e187f4f50aac5967e9270","abstract_canon_sha256":"31237552f3a083651397180966d72c4d97fe8987abde6932a66301d7b0c52503"},"schema_version":"1.0"},"canonical_sha256":"accb2a31e14437819c42a72e13313d03e2bae726b6dcdbd04312e6edbe67d69d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:50:47.426756Z","signature_b64":"n6V+uTLn7JCrUBzRwxXX6tfALG1q8Gkiaf+CLx3h+nymhzVAMk+8Gpc1wmDH1eARFiuYtWfv3VijhqOUoseiDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"accb2a31e14437819c42a72e13313d03e2bae726b6dcdbd04312e6edbe67d69d","last_reissued_at":"2026-05-18T00:50:47.426003Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:50:47.426003Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1608.00551","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:50:47Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"i4iKUrzYmQ86qta4BlUIpEMVQ9YKsK8uBJeTpuHxjlZ5zLScZ1H9RoCMt5rVWla1LBsWfSpvNVXTg9GzwVEKCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T08:44:15.958498Z"},"content_sha256":"0ef3e7d1fb624160a3f0974cbadc659a5f0e6092cc58cc8b9e9d35345f626e0e","schema_version":"1.0","event_id":"sha256:0ef3e7d1fb624160a3f0974cbadc659a5f0e6092cc58cc8b9e9d35345f626e0e"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:VTFSUMPBIQ3YDHCCU4XBGMJ5AP","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Simulated forecasts for primordial B-mode searches in ground-based experiments","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"Ben Thorne, David Alonso, Joanna Dunkley, Sigurd Naess","submitted_at":"2016-08-01T19:46:46Z","abstract_excerpt":"Detecting the imprint of inflationary gravitational waves on the $B$-mode polarization of the Cosmic Microwave Background (CMB) is one of the main science cases for current and next-generation CMB experiments. In this work we explore some of the challenges that ground-based facilities will have to face in order to carry out this measurement in the presence of Galactic foregrounds and correlated atmospheric noise. We present forecasts for Stage-3 (S3) and planned Stage-4 (S4) experiments based on the analysis of simulated sky maps using a map-based Bayesian foreground cleaning method. Our resul"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1608.00551","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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:50:47Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+c/DDERnKFxiyYse4WthZtn+gdnlgjsC85cgKUEs92qbOW4PCsSzPF3ZliyGGcfuOIWM3P6xeh1sTASjFwQeCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T08:44:15.958849Z"},"content_sha256":"22c1f926d542b775ab19247bdee32056d34c6affc54f27dff3ca9ce4627e87e1","schema_version":"1.0","event_id":"sha256:22c1f926d542b775ab19247bdee32056d34c6affc54f27dff3ca9ce4627e87e1"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/VTFSUMPBIQ3YDHCCU4XBGMJ5AP/bundle.json","state_url":"https://pith.science/pith/VTFSUMPBIQ3YDHCCU4XBGMJ5AP/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/VTFSUMPBIQ3YDHCCU4XBGMJ5AP/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":"2026-05-28T08:44:15Z","links":{"resolver":"https://pith.science/pith/VTFSUMPBIQ3YDHCCU4XBGMJ5AP","bundle":"https://pith.science/pith/VTFSUMPBIQ3YDHCCU4XBGMJ5AP/bundle.json","state":"https://pith.science/pith/VTFSUMPBIQ3YDHCCU4XBGMJ5AP/state.json","well_known_bundle":"https://pith.science/.well-known/pith/VTFSUMPBIQ3YDHCCU4XBGMJ5AP/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:VTFSUMPBIQ3YDHCCU4XBGMJ5AP","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":"31237552f3a083651397180966d72c4d97fe8987abde6932a66301d7b0c52503","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2016-08-01T19:46:46Z","title_canon_sha256":"76d7593cf096827d7d69c783a258b46d8f789d55915e187f4f50aac5967e9270"},"schema_version":"1.0","source":{"id":"1608.00551","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1608.00551","created_at":"2026-05-18T00:50:47Z"},{"alias_kind":"arxiv_version","alias_value":"1608.00551v1","created_at":"2026-05-18T00:50:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1608.00551","created_at":"2026-05-18T00:50:47Z"},{"alias_kind":"pith_short_12","alias_value":"VTFSUMPBIQ3Y","created_at":"2026-05-18T12:30:48Z"},{"alias_kind":"pith_short_16","alias_value":"VTFSUMPBIQ3YDHCC","created_at":"2026-05-18T12:30:48Z"},{"alias_kind":"pith_short_8","alias_value":"VTFSUMPB","created_at":"2026-05-18T12:30:48Z"}],"graph_snapshots":[{"event_id":"sha256:22c1f926d542b775ab19247bdee32056d34c6affc54f27dff3ca9ce4627e87e1","target":"graph","created_at":"2026-05-18T00:50:47Z","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":"Detecting the imprint of inflationary gravitational waves on the $B$-mode polarization of the Cosmic Microwave Background (CMB) is one of the main science cases for current and next-generation CMB experiments. In this work we explore some of the challenges that ground-based facilities will have to face in order to carry out this measurement in the presence of Galactic foregrounds and correlated atmospheric noise. We present forecasts for Stage-3 (S3) and planned Stage-4 (S4) experiments based on the analysis of simulated sky maps using a map-based Bayesian foreground cleaning method. Our resul","authors_text":"Ben Thorne, David Alonso, Joanna Dunkley, Sigurd Naess","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2016-08-01T19:46:46Z","title":"Simulated forecasts for primordial B-mode searches in ground-based experiments"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1608.00551","kind":"arxiv","version":1},"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":"sha256:0ef3e7d1fb624160a3f0974cbadc659a5f0e6092cc58cc8b9e9d35345f626e0e","target":"record","created_at":"2026-05-18T00:50:47Z","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":"31237552f3a083651397180966d72c4d97fe8987abde6932a66301d7b0c52503","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2016-08-01T19:46:46Z","title_canon_sha256":"76d7593cf096827d7d69c783a258b46d8f789d55915e187f4f50aac5967e9270"},"schema_version":"1.0","source":{"id":"1608.00551","kind":"arxiv","version":1}},"canonical_sha256":"accb2a31e14437819c42a72e13313d03e2bae726b6dcdbd04312e6edbe67d69d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"accb2a31e14437819c42a72e13313d03e2bae726b6dcdbd04312e6edbe67d69d","first_computed_at":"2026-05-18T00:50:47.426003Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:50:47.426003Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"n6V+uTLn7JCrUBzRwxXX6tfALG1q8Gkiaf+CLx3h+nymhzVAMk+8Gpc1wmDH1eARFiuYtWfv3VijhqOUoseiDw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:50:47.426756Z","signed_message":"canonical_sha256_bytes"},"source_id":"1608.00551","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0ef3e7d1fb624160a3f0974cbadc659a5f0e6092cc58cc8b9e9d35345f626e0e","sha256:22c1f926d542b775ab19247bdee32056d34c6affc54f27dff3ca9ce4627e87e1"],"state_sha256":"6df03dfe55d51a0cab47267b8a951fac97e1cef5bcb67482127f5985e6175f3f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6t0abmckUVaVjBYh+qepEusGTvkZ/wyByku1aoDc/GpiMh7DEh5vjdpO6Z/AbxEo3Ntj5RQnL19bIDLSyp1gCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T08:44:15.960843Z","bundle_sha256":"59cc089979991fec96c0cce9d16ee284ddc0bdd069824b7431fd5bc77eb3b347"}}