{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2010:WX6JNRAAZLTABWTA24LJRJRKHF","short_pith_number":"pith:WX6JNRAA","canonical_record":{"source":{"id":"1007.4135","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2010-07-23T14:02:21Z","cross_cats_sorted":["astro-ph.CO","astro-ph.IM"],"title_canon_sha256":"f4f7f6d66c8ac80e4d71834ad5af05444d42ed6394c39f7f852c2411e9637023","abstract_canon_sha256":"d00b5525e0bc9d0910e9e2b45a2d630ede869deaf09425f0f8fc77c9b973a0af"},"schema_version":"1.0"},"canonical_sha256":"b5fc96c400cae600da60d71698a62a396c4d732d712db02c2c88df3eed697d97","source":{"kind":"arxiv","id":"1007.4135","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1007.4135","created_at":"2026-05-18T01:55:39Z"},{"alias_kind":"arxiv_version","alias_value":"1007.4135v2","created_at":"2026-05-18T01:55:39Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1007.4135","created_at":"2026-05-18T01:55:39Z"},{"alias_kind":"pith_short_12","alias_value":"WX6JNRAAZLTA","created_at":"2026-05-18T12:26:17Z"},{"alias_kind":"pith_short_16","alias_value":"WX6JNRAAZLTABWTA","created_at":"2026-05-18T12:26:17Z"},{"alias_kind":"pith_short_8","alias_value":"WX6JNRAA","created_at":"2026-05-18T12:26:17Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2010:WX6JNRAAZLTABWTA24LJRJRKHF","target":"record","payload":{"canonical_record":{"source":{"id":"1007.4135","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2010-07-23T14:02:21Z","cross_cats_sorted":["astro-ph.CO","astro-ph.IM"],"title_canon_sha256":"f4f7f6d66c8ac80e4d71834ad5af05444d42ed6394c39f7f852c2411e9637023","abstract_canon_sha256":"d00b5525e0bc9d0910e9e2b45a2d630ede869deaf09425f0f8fc77c9b973a0af"},"schema_version":"1.0"},"canonical_sha256":"b5fc96c400cae600da60d71698a62a396c4d732d712db02c2c88df3eed697d97","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:55:39.992786Z","signature_b64":"1YHokPr/vGJGdzBDzDzgmlV+khbPk8JEW0BOW4O9s8aRcGccOQVlcDUBErlvNUnNBWX3wyj1d++JNp4EzBXECg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b5fc96c400cae600da60d71698a62a396c4d732d712db02c2c88df3eed697d97","last_reissued_at":"2026-05-18T01:55:39.992302Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:55:39.992302Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1007.4135","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":"2026-05-18T01:55:39Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"vlKERsumZMFR+3OdZC9rSsYu5tlYE9/DD9XJC376fwYHS00uh4KGGXb85QiVitMpR5y+LMLR15dTFRyD1UHeAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T22:17:07.222723Z"},"content_sha256":"2d01504c950632baa15dba62f50702984f025e9e01e3d4adf99f586570f1583d","schema_version":"1.0","event_id":"sha256:2d01504c950632baa15dba62f50702984f025e9e01e3d4adf99f586570f1583d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2010:WX6JNRAAZLTABWTA24LJRJRKHF","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Realistic Simulations of the Galactic Polarized Foreground: Consequences for 21-cm Reionization Detection Experiments","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO","astro-ph.IM"],"primary_cat":"astro-ph.GA","authors_text":"A. G. de Bruyn, Gianni Bernardi, L\\'eon V. E. Koopmans, Panagiotis Labropoulos, Saleem Zaroubi, Vibor Jeli\\'c","submitted_at":"2010-07-23T14:02:21Z","abstract_excerpt":"Experiments designed to measure the redshifted 21~cm line from the Epoch of Reionization (EoR) are challenged by strong astrophysical foreground contamination, ionospheric distortions, complex instrumental response and other different types of noise (e.g. radio frequency interference). The astrophysical foregrounds are dominated by diffuse synchrotron emission from our Galaxy. Here we present a simulation of the Galactic emission used as a foreground module for the LOFAR- EoR key science project end-to-end simulations. The simulation produces total and polarized intensity over $10^\\circ \\times"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1007.4135","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":"2026-05-18T01:55:39Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"DXCgiwKUqBVlc1F8Vz5ARanqn/59Ut5nzLAUo5/8NaJQaoFql99uHhz7u7EX9scxCROZJcnPIqBhTMiPJYEvCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T22:17:07.223361Z"},"content_sha256":"f9ed2ce9ec65b5629c9a9537f7cca5bf6e52ae12bdbb1ebc0b97b5f58180a974","schema_version":"1.0","event_id":"sha256:f9ed2ce9ec65b5629c9a9537f7cca5bf6e52ae12bdbb1ebc0b97b5f58180a974"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/WX6JNRAAZLTABWTA24LJRJRKHF/bundle.json","state_url":"https://pith.science/pith/WX6JNRAAZLTABWTA24LJRJRKHF/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/WX6JNRAAZLTABWTA24LJRJRKHF/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":"2026-05-26T22:17:07Z","links":{"resolver":"https://pith.science/pith/WX6JNRAAZLTABWTA24LJRJRKHF","bundle":"https://pith.science/pith/WX6JNRAAZLTABWTA24LJRJRKHF/bundle.json","state":"https://pith.science/pith/WX6JNRAAZLTABWTA24LJRJRKHF/state.json","well_known_bundle":"https://pith.science/.well-known/pith/WX6JNRAAZLTABWTA24LJRJRKHF/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:WX6JNRAAZLTABWTA24LJRJRKHF","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":"d00b5525e0bc9d0910e9e2b45a2d630ede869deaf09425f0f8fc77c9b973a0af","cross_cats_sorted":["astro-ph.CO","astro-ph.IM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2010-07-23T14:02:21Z","title_canon_sha256":"f4f7f6d66c8ac80e4d71834ad5af05444d42ed6394c39f7f852c2411e9637023"},"schema_version":"1.0","source":{"id":"1007.4135","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1007.4135","created_at":"2026-05-18T01:55:39Z"},{"alias_kind":"arxiv_version","alias_value":"1007.4135v2","created_at":"2026-05-18T01:55:39Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1007.4135","created_at":"2026-05-18T01:55:39Z"},{"alias_kind":"pith_short_12","alias_value":"WX6JNRAAZLTA","created_at":"2026-05-18T12:26:17Z"},{"alias_kind":"pith_short_16","alias_value":"WX6JNRAAZLTABWTA","created_at":"2026-05-18T12:26:17Z"},{"alias_kind":"pith_short_8","alias_value":"WX6JNRAA","created_at":"2026-05-18T12:26:17Z"}],"graph_snapshots":[{"event_id":"sha256:f9ed2ce9ec65b5629c9a9537f7cca5bf6e52ae12bdbb1ebc0b97b5f58180a974","target":"graph","created_at":"2026-05-18T01:55:39Z","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":"Experiments designed to measure the redshifted 21~cm line from the Epoch of Reionization (EoR) are challenged by strong astrophysical foreground contamination, ionospheric distortions, complex instrumental response and other different types of noise (e.g. radio frequency interference). The astrophysical foregrounds are dominated by diffuse synchrotron emission from our Galaxy. Here we present a simulation of the Galactic emission used as a foreground module for the LOFAR- EoR key science project end-to-end simulations. The simulation produces total and polarized intensity over $10^\\circ \\times","authors_text":"A. G. de Bruyn, Gianni Bernardi, L\\'eon V. E. Koopmans, Panagiotis Labropoulos, Saleem Zaroubi, Vibor Jeli\\'c","cross_cats":["astro-ph.CO","astro-ph.IM"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2010-07-23T14:02:21Z","title":"Realistic Simulations of the Galactic Polarized Foreground: Consequences for 21-cm Reionization Detection Experiments"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1007.4135","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":"sha256:2d01504c950632baa15dba62f50702984f025e9e01e3d4adf99f586570f1583d","target":"record","created_at":"2026-05-18T01:55:39Z","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":"d00b5525e0bc9d0910e9e2b45a2d630ede869deaf09425f0f8fc77c9b973a0af","cross_cats_sorted":["astro-ph.CO","astro-ph.IM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2010-07-23T14:02:21Z","title_canon_sha256":"f4f7f6d66c8ac80e4d71834ad5af05444d42ed6394c39f7f852c2411e9637023"},"schema_version":"1.0","source":{"id":"1007.4135","kind":"arxiv","version":2}},"canonical_sha256":"b5fc96c400cae600da60d71698a62a396c4d732d712db02c2c88df3eed697d97","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b5fc96c400cae600da60d71698a62a396c4d732d712db02c2c88df3eed697d97","first_computed_at":"2026-05-18T01:55:39.992302Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:55:39.992302Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"1YHokPr/vGJGdzBDzDzgmlV+khbPk8JEW0BOW4O9s8aRcGccOQVlcDUBErlvNUnNBWX3wyj1d++JNp4EzBXECg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:55:39.992786Z","signed_message":"canonical_sha256_bytes"},"source_id":"1007.4135","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2d01504c950632baa15dba62f50702984f025e9e01e3d4adf99f586570f1583d","sha256:f9ed2ce9ec65b5629c9a9537f7cca5bf6e52ae12bdbb1ebc0b97b5f58180a974"],"state_sha256":"56567c9a14d5e0f21f0971fb16739e517d8f1387b98d7ffde0de91bc4f3211ae"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"928aUJDYLHMXM35iuLJxb3+HWLs1NNamoeJ5AtEx/qX9hr2+hFXQJlvDVKT0px81gcoCP9shOzlZjuGp8a1qAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T22:17:07.226990Z","bundle_sha256":"4ffac015eb7f2658d29478388a116b4e8484ad066feabd9a44524abe42ca6fb7"}}