{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:5HS3PYBU5TXGBQDCTQSHAHVNLM","short_pith_number":"pith:5HS3PYBU","canonical_record":{"source":{"id":"1602.01284","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2016-02-03T12:56:13Z","cross_cats_sorted":[],"title_canon_sha256":"5fe72358a1c6179deac744c7a68b9ea3e346dc72dee96b9cd52897248bf27b5a","abstract_canon_sha256":"dcffb92ae8c432886c03d667b3e6c573fcef4bb41573b5b592b895855e3be4be"},"schema_version":"1.0"},"canonical_sha256":"e9e5b7e034ecee60c0629c24701ead5b2e20ed042710915946d3ca43b424a9bf","source":{"kind":"arxiv","id":"1602.01284","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1602.01284","created_at":"2026-05-18T01:10:51Z"},{"alias_kind":"arxiv_version","alias_value":"1602.01284v1","created_at":"2026-05-18T01:10:51Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1602.01284","created_at":"2026-05-18T01:10:51Z"},{"alias_kind":"pith_short_12","alias_value":"5HS3PYBU5TXG","created_at":"2026-05-18T12:30:01Z"},{"alias_kind":"pith_short_16","alias_value":"5HS3PYBU5TXGBQDC","created_at":"2026-05-18T12:30:01Z"},{"alias_kind":"pith_short_8","alias_value":"5HS3PYBU","created_at":"2026-05-18T12:30:01Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:5HS3PYBU5TXGBQDCTQSHAHVNLM","target":"record","payload":{"canonical_record":{"source":{"id":"1602.01284","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2016-02-03T12:56:13Z","cross_cats_sorted":[],"title_canon_sha256":"5fe72358a1c6179deac744c7a68b9ea3e346dc72dee96b9cd52897248bf27b5a","abstract_canon_sha256":"dcffb92ae8c432886c03d667b3e6c573fcef4bb41573b5b592b895855e3be4be"},"schema_version":"1.0"},"canonical_sha256":"e9e5b7e034ecee60c0629c24701ead5b2e20ed042710915946d3ca43b424a9bf","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:10:51.156227Z","signature_b64":"O1BKJo4RvH3RyyDPk/6cF3Cim32w2MhtupVLpxF6itXkEZX1+PivLiU+56AvwIhfPBdd6m6Rbb++01qHk46ECg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e9e5b7e034ecee60c0629c24701ead5b2e20ed042710915946d3ca43b424a9bf","last_reissued_at":"2026-05-18T01:10:51.155667Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:10:51.155667Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1602.01284","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":"2026-05-18T01:10:51Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"xtKhX0NiHy4d2XU6La0tUucpfhnPSVeXHl0OluahwX6KzYtxVu3Pe8RgbAel7LSQ/6isozgvi/9evttfr+hYAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T15:29:58.600681Z"},"content_sha256":"9b019cec64645056ff2365be13ab5076fbe35a3c5fef97bf67ce4081cab129af","schema_version":"1.0","event_id":"sha256:9b019cec64645056ff2365be13ab5076fbe35a3c5fef97bf67ce4081cab129af"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:5HS3PYBU5TXGBQDCTQSHAHVNLM","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Excess B-modes extracted from the Planck polarization maps","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"H. U. N{\\o}rgaard-Nielsen","submitted_at":"2016-02-03T12:56:13Z","abstract_excerpt":"One of the main obstacles for extracting the Cosmic Microwave Background (CMB) from mm/submm observations is the pollution from the main Galactic components: synchrotron, free-free and thermal dust emission. The feasibility of using simple neural networks to extract CMB has been demonstrated on both temperature and polarization data obtained by the WMAP satellite. The main goal of this paper is to demonstrate the feasibility of neural networks for extracting the CMB signal from the Planck polarization data with high precision. Both auto-correlation and cross-correlation power spectra within a "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1602.01284","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":"2026-05-18T01:10:51Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"O/msXwIpYwFnXNe0K6+G6xLa47MzJH8j5XWmwE0VNHZPGVUGb/57DNGR4kgEobdVdtnPZ91sMXGr9V4LM7ceAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T15:29:58.601019Z"},"content_sha256":"3992795a267c6f65fa9ce59334365490b1e9d310a194ec1c5b3143e15bd9946e","schema_version":"1.0","event_id":"sha256:3992795a267c6f65fa9ce59334365490b1e9d310a194ec1c5b3143e15bd9946e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/5HS3PYBU5TXGBQDCTQSHAHVNLM/bundle.json","state_url":"https://pith.science/pith/5HS3PYBU5TXGBQDCTQSHAHVNLM/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/5HS3PYBU5TXGBQDCTQSHAHVNLM/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":"2026-06-05T15:29:58Z","links":{"resolver":"https://pith.science/pith/5HS3PYBU5TXGBQDCTQSHAHVNLM","bundle":"https://pith.science/pith/5HS3PYBU5TXGBQDCTQSHAHVNLM/bundle.json","state":"https://pith.science/pith/5HS3PYBU5TXGBQDCTQSHAHVNLM/state.json","well_known_bundle":"https://pith.science/.well-known/pith/5HS3PYBU5TXGBQDCTQSHAHVNLM/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:5HS3PYBU5TXGBQDCTQSHAHVNLM","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":"dcffb92ae8c432886c03d667b3e6c573fcef4bb41573b5b592b895855e3be4be","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2016-02-03T12:56:13Z","title_canon_sha256":"5fe72358a1c6179deac744c7a68b9ea3e346dc72dee96b9cd52897248bf27b5a"},"schema_version":"1.0","source":{"id":"1602.01284","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1602.01284","created_at":"2026-05-18T01:10:51Z"},{"alias_kind":"arxiv_version","alias_value":"1602.01284v1","created_at":"2026-05-18T01:10:51Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1602.01284","created_at":"2026-05-18T01:10:51Z"},{"alias_kind":"pith_short_12","alias_value":"5HS3PYBU5TXG","created_at":"2026-05-18T12:30:01Z"},{"alias_kind":"pith_short_16","alias_value":"5HS3PYBU5TXGBQDC","created_at":"2026-05-18T12:30:01Z"},{"alias_kind":"pith_short_8","alias_value":"5HS3PYBU","created_at":"2026-05-18T12:30:01Z"}],"graph_snapshots":[{"event_id":"sha256:3992795a267c6f65fa9ce59334365490b1e9d310a194ec1c5b3143e15bd9946e","target":"graph","created_at":"2026-05-18T01:10:51Z","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":"One of the main obstacles for extracting the Cosmic Microwave Background (CMB) from mm/submm observations is the pollution from the main Galactic components: synchrotron, free-free and thermal dust emission. The feasibility of using simple neural networks to extract CMB has been demonstrated on both temperature and polarization data obtained by the WMAP satellite. The main goal of this paper is to demonstrate the feasibility of neural networks for extracting the CMB signal from the Planck polarization data with high precision. Both auto-correlation and cross-correlation power spectra within a ","authors_text":"H. U. N{\\o}rgaard-Nielsen","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2016-02-03T12:56:13Z","title":"Excess B-modes extracted from the Planck polarization maps"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1602.01284","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":"sha256:9b019cec64645056ff2365be13ab5076fbe35a3c5fef97bf67ce4081cab129af","target":"record","created_at":"2026-05-18T01:10:51Z","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":"dcffb92ae8c432886c03d667b3e6c573fcef4bb41573b5b592b895855e3be4be","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2016-02-03T12:56:13Z","title_canon_sha256":"5fe72358a1c6179deac744c7a68b9ea3e346dc72dee96b9cd52897248bf27b5a"},"schema_version":"1.0","source":{"id":"1602.01284","kind":"arxiv","version":1}},"canonical_sha256":"e9e5b7e034ecee60c0629c24701ead5b2e20ed042710915946d3ca43b424a9bf","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e9e5b7e034ecee60c0629c24701ead5b2e20ed042710915946d3ca43b424a9bf","first_computed_at":"2026-05-18T01:10:51.155667Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:10:51.155667Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"O1BKJo4RvH3RyyDPk/6cF3Cim32w2MhtupVLpxF6itXkEZX1+PivLiU+56AvwIhfPBdd6m6Rbb++01qHk46ECg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:10:51.156227Z","signed_message":"canonical_sha256_bytes"},"source_id":"1602.01284","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9b019cec64645056ff2365be13ab5076fbe35a3c5fef97bf67ce4081cab129af","sha256:3992795a267c6f65fa9ce59334365490b1e9d310a194ec1c5b3143e15bd9946e"],"state_sha256":"70502d0dc9c998b0cbffa3145ff37f4f8444107472ad5436ef99e56b2d04f8f1"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"zSfuhRpA3/Qyzgbz9ZXkpVo0NUIYjvf/QFTRAZxkJeZtgJzMl9nzJ/Jyym+Gqk3EIXe4yvsMh7sFiazJpXRvDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-05T15:29:58.602892Z","bundle_sha256":"c5cb4c5592a6bdad6d01b86875de010057f4763ac78cef2e6ab3fa1d2c892ef6"}}