{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:VMWTB3PCSIHZ2STHM5ZKQP5QIQ","short_pith_number":"pith:VMWTB3PC","canonical_record":{"source":{"id":"2104.13778","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2021-04-28T14:06:49Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"a7f384be97b1ca1f79c2ba578ce27af7b6af5dc06ab312f9fadd85db05fc9e3a","abstract_canon_sha256":"e127867054afca05195f1062c271f20f12aef62cecfeb7c5521c4e83ab21a38a"},"schema_version":"1.0"},"canonical_sha256":"ab2d30ede2920f9d4a676772a83fb04433bcbe2ae46d4ee9846cd08b264c60e1","source":{"kind":"arxiv","id":"2104.13778","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2104.13778","created_at":"2026-07-05T03:10:07Z"},{"alias_kind":"arxiv_version","alias_value":"2104.13778v1","created_at":"2026-07-05T03:10:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2104.13778","created_at":"2026-07-05T03:10:07Z"},{"alias_kind":"pith_short_12","alias_value":"VMWTB3PCSIHZ","created_at":"2026-07-05T03:10:07Z"},{"alias_kind":"pith_short_16","alias_value":"VMWTB3PCSIHZ2STH","created_at":"2026-07-05T03:10:07Z"},{"alias_kind":"pith_short_8","alias_value":"VMWTB3PC","created_at":"2026-07-05T03:10:07Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:VMWTB3PCSIHZ2STHM5ZKQP5QIQ","target":"record","payload":{"canonical_record":{"source":{"id":"2104.13778","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2021-04-28T14:06:49Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"a7f384be97b1ca1f79c2ba578ce27af7b6af5dc06ab312f9fadd85db05fc9e3a","abstract_canon_sha256":"e127867054afca05195f1062c271f20f12aef62cecfeb7c5521c4e83ab21a38a"},"schema_version":"1.0"},"canonical_sha256":"ab2d30ede2920f9d4a676772a83fb04433bcbe2ae46d4ee9846cd08b264c60e1","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T03:10:07.444974Z","signature_b64":"6Ju30gMvXxjx7hvPY92SOO5IMCZ/tiTlclBL9gvLzCBud5VPNoEAMWVxu7Qnod4e6KWvwU+VNsYKvujUlmeNBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ab2d30ede2920f9d4a676772a83fb04433bcbe2ae46d4ee9846cd08b264c60e1","last_reissued_at":"2026-07-05T03:10:07.444431Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T03:10:07.444431Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2104.13778","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":"2026-07-05T03:10:07Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"wyNuPw7G7iDk4nt2MnmlC9W9p3cgIEbcCaW5fwvarmVAZm+SaARrCvNE7FgHMo8mKWeM1VMZ/3ymllBl7B0yAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T05:00:07.047957Z"},"content_sha256":"c4b7b8d66be413700c4384af7f2a81549e083bd8f319fb9309cded1305760241","schema_version":"1.0","event_id":"sha256:c4b7b8d66be413700c4384af7f2a81549e083bd8f319fb9309cded1305760241"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:VMWTB3PCSIHZ2STHM5ZKQP5QIQ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A new approach of estimating the Galactic thermal dust and synchrotron polarized emission template in the microwave bands","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.CO","authors_text":"Debabrata Adak","submitted_at":"2021-04-28T14:06:49Z","abstract_excerpt":"The Internal Linear Combination (ILC) method has been extensively used to extract the cosmic microwave background (CMB) anisotropy map from foreground contaminated multi-frequency maps. However, the performance of simple ILC is limited and can be significantly improved by heavily constraint equations, dubbed cILC. The standard ILC and cILC works on the spin-0 field. Recently, a generalized version of ILC is developed to estimate polarization maps in which the quantity $Q \\pm iU$ is combined at multiple frequencies using complex coefficients called Polarization ILC (PILC). A statistical moment "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2104.13778","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2104.13778/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-05T03:10:07Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"tGTf8OWuFhgRcFzfnKdVk9QAL1zkK3krPS/1GMDWGQTiuj9umqSK8FUJi4W2THj8iSLRtOIM4B1BTPLpv5hLBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T05:00:07.048962Z"},"content_sha256":"af9c758e993b68cf9935847768182f7cce65ab484d2b8a4d370b1289884d16db","schema_version":"1.0","event_id":"sha256:af9c758e993b68cf9935847768182f7cce65ab484d2b8a4d370b1289884d16db"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/VMWTB3PCSIHZ2STHM5ZKQP5QIQ/bundle.json","state_url":"https://pith.science/pith/VMWTB3PCSIHZ2STHM5ZKQP5QIQ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/VMWTB3PCSIHZ2STHM5ZKQP5QIQ/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":"2026-08-05T05:00:07Z","links":{"resolver":"https://pith.science/pith/VMWTB3PCSIHZ2STHM5ZKQP5QIQ","bundle":"https://pith.science/pith/VMWTB3PCSIHZ2STHM5ZKQP5QIQ/bundle.json","state":"https://pith.science/pith/VMWTB3PCSIHZ2STHM5ZKQP5QIQ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/VMWTB3PCSIHZ2STHM5ZKQP5QIQ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:VMWTB3PCSIHZ2STHM5ZKQP5QIQ","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":"e127867054afca05195f1062c271f20f12aef62cecfeb7c5521c4e83ab21a38a","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2021-04-28T14:06:49Z","title_canon_sha256":"a7f384be97b1ca1f79c2ba578ce27af7b6af5dc06ab312f9fadd85db05fc9e3a"},"schema_version":"1.0","source":{"id":"2104.13778","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2104.13778","created_at":"2026-07-05T03:10:07Z"},{"alias_kind":"arxiv_version","alias_value":"2104.13778v1","created_at":"2026-07-05T03:10:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2104.13778","created_at":"2026-07-05T03:10:07Z"},{"alias_kind":"pith_short_12","alias_value":"VMWTB3PCSIHZ","created_at":"2026-07-05T03:10:07Z"},{"alias_kind":"pith_short_16","alias_value":"VMWTB3PCSIHZ2STH","created_at":"2026-07-05T03:10:07Z"},{"alias_kind":"pith_short_8","alias_value":"VMWTB3PC","created_at":"2026-07-05T03:10:07Z"}],"graph_snapshots":[{"event_id":"sha256:af9c758e993b68cf9935847768182f7cce65ab484d2b8a4d370b1289884d16db","target":"graph","created_at":"2026-07-05T03:10:07Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2104.13778/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The Internal Linear Combination (ILC) method has been extensively used to extract the cosmic microwave background (CMB) anisotropy map from foreground contaminated multi-frequency maps. However, the performance of simple ILC is limited and can be significantly improved by heavily constraint equations, dubbed cILC. The standard ILC and cILC works on the spin-0 field. Recently, a generalized version of ILC is developed to estimate polarization maps in which the quantity $Q \\pm iU$ is combined at multiple frequencies using complex coefficients called Polarization ILC (PILC). A statistical moment ","authors_text":"Debabrata Adak","cross_cats":["astro-ph.GA"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2021-04-28T14:06:49Z","title":"A new approach of estimating the Galactic thermal dust and synchrotron polarized emission template in the microwave bands"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2104.13778","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:c4b7b8d66be413700c4384af7f2a81549e083bd8f319fb9309cded1305760241","target":"record","created_at":"2026-07-05T03:10:07Z","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":"e127867054afca05195f1062c271f20f12aef62cecfeb7c5521c4e83ab21a38a","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2021-04-28T14:06:49Z","title_canon_sha256":"a7f384be97b1ca1f79c2ba578ce27af7b6af5dc06ab312f9fadd85db05fc9e3a"},"schema_version":"1.0","source":{"id":"2104.13778","kind":"arxiv","version":1}},"canonical_sha256":"ab2d30ede2920f9d4a676772a83fb04433bcbe2ae46d4ee9846cd08b264c60e1","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ab2d30ede2920f9d4a676772a83fb04433bcbe2ae46d4ee9846cd08b264c60e1","first_computed_at":"2026-07-05T03:10:07.444431Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T03:10:07.444431Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"6Ju30gMvXxjx7hvPY92SOO5IMCZ/tiTlclBL9gvLzCBud5VPNoEAMWVxu7Qnod4e6KWvwU+VNsYKvujUlmeNBw==","signature_status":"signed_v1","signed_at":"2026-07-05T03:10:07.444974Z","signed_message":"canonical_sha256_bytes"},"source_id":"2104.13778","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c4b7b8d66be413700c4384af7f2a81549e083bd8f319fb9309cded1305760241","sha256:af9c758e993b68cf9935847768182f7cce65ab484d2b8a4d370b1289884d16db"],"state_sha256":"cf270b81d84911480776998ee9a8fd4047a15dbc7cdc5b062e645b8e1afd9f43"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"TQo6KPr8j4MuoM26UCPN5jnE23Nsjt9rRMbO3szOuKSlWwJtF0XThnBWI+wBpIwI6XL63NE8FhwwGxlZUIr+Cw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-05T05:00:07.056797Z","bundle_sha256":"16f30dec3f2f50e4a53bb12eb58735b3ed7b3633f23cda2366768d6c1289b73d"}}