{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:INZBNFTTGMGV4EPOUIPYEVSQCJ","short_pith_number":"pith:INZBNFTT","canonical_record":{"source":{"id":"1508.06650","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-08-26T20:16:42Z","cross_cats_sorted":[],"title_canon_sha256":"da0c7265b488da3acbe64396e04da07bd7a67f1ed943fce7df68f03bf8f5ac8d","abstract_canon_sha256":"54fe1b1f02e7fdb624325a74be6bab399dd3c83f62e70e523ed0126dec28cd67"},"schema_version":"1.0"},"canonical_sha256":"4372169673330d5e11eea21f82565012652ec7db4789cb4587e0956444faca6c","source":{"kind":"arxiv","id":"1508.06650","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1508.06650","created_at":"2026-05-18T01:27:22Z"},{"alias_kind":"arxiv_version","alias_value":"1508.06650v2","created_at":"2026-05-18T01:27:22Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1508.06650","created_at":"2026-05-18T01:27:22Z"},{"alias_kind":"pith_short_12","alias_value":"INZBNFTTGMGV","created_at":"2026-05-18T12:29:25Z"},{"alias_kind":"pith_short_16","alias_value":"INZBNFTTGMGV4EPO","created_at":"2026-05-18T12:29:25Z"},{"alias_kind":"pith_short_8","alias_value":"INZBNFTT","created_at":"2026-05-18T12:29:25Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:INZBNFTTGMGV4EPOUIPYEVSQCJ","target":"record","payload":{"canonical_record":{"source":{"id":"1508.06650","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-08-26T20:16:42Z","cross_cats_sorted":[],"title_canon_sha256":"da0c7265b488da3acbe64396e04da07bd7a67f1ed943fce7df68f03bf8f5ac8d","abstract_canon_sha256":"54fe1b1f02e7fdb624325a74be6bab399dd3c83f62e70e523ed0126dec28cd67"},"schema_version":"1.0"},"canonical_sha256":"4372169673330d5e11eea21f82565012652ec7db4789cb4587e0956444faca6c","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:27:22.752588Z","signature_b64":"hM8MWJLGqg7mjnCBgmuqGOUn7IpHQWUH6mFRsUhsVPQEKvgoKPGP2CnSC+h1UP+qIOsIoPlGJsMRSHN8gUtiBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"4372169673330d5e11eea21f82565012652ec7db4789cb4587e0956444faca6c","last_reissued_at":"2026-05-18T01:27:22.752196Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:27:22.752196Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1508.06650","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":"2026-05-18T01:27:22Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"gTtPnkHjDCuiy7Sev7Nx2e6F+qXufH2rV46oTwWzP+SzBxnvPnCTCS2+XVAl4DIv3/St2OWObRfsQ9oxIVVABw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T18:37:04.026979Z"},"content_sha256":"8714c4104eba21bf8a1efd182b269b2df7dcca2d9e2daaf56bc809955b3c65a0","schema_version":"1.0","event_id":"sha256:8714c4104eba21bf8a1efd182b269b2df7dcca2d9e2daaf56bc809955b3c65a0"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:INZBNFTTGMGV4EPOUIPYEVSQCJ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Linear polarization structures in LOFAR observations of the interstellar medium in the 3C196 field","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"A. G. de Bruyn, A. Ghosh, A. H. Patil, A. R. Offringa, B. Ciardi, E. Chapman, E. R. Fernandez, F. B. Abdalla, G. Harker, G. Mellema, H. Jensen, H. K. Vedantham, I. T. Iliev, K. M. B. Asad, L. V. E. Koopmans, M. A. Brentjens, M. Haverkorn, M. Mevius, S. Bus, S. Kazemi, S. Yatawatta, S. Zaroubi, V. Jeli\\'c, V. N. Pandey","submitted_at":"2015-08-26T20:16:42Z","abstract_excerpt":"This study aims to characterize linear polarization structures in LOFAR observations of the interstellar medium (ISM) in the 3C196 field, one of the primary fields of the LOFAR-Epoch of Reionization key science project. We have used the high band antennas (HBA) of LOFAR to image this region and Rotation Measure (RM) synthesis to unravel the distribution of polarized structures in Faraday depth. The brightness temperature of the detected Galactic emission is $5-15~{\\rm K}$ in polarized intensity and covers the range from -3 to +8 ${\\rm rad~m^{-2}}$ in Faraday depth. The most interesting morphol"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1508.06650","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":"2026-05-18T01:27:22Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"CjEZO1pTn+gMAECqMktL0aetBeoVTvqdjzHbxsTkkBYfFU2TbHTo6GzN7qQzl5uHQy8taalRJJv5/ChZyGPYCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T18:37:04.027641Z"},"content_sha256":"58cdefc6406533fb8eaea61a7fef9ae922784f3b5189db9e3389a5d1a10e0929","schema_version":"1.0","event_id":"sha256:58cdefc6406533fb8eaea61a7fef9ae922784f3b5189db9e3389a5d1a10e0929"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/INZBNFTTGMGV4EPOUIPYEVSQCJ/bundle.json","state_url":"https://pith.science/pith/INZBNFTTGMGV4EPOUIPYEVSQCJ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/INZBNFTTGMGV4EPOUIPYEVSQCJ/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":"2026-05-26T18:37:04Z","links":{"resolver":"https://pith.science/pith/INZBNFTTGMGV4EPOUIPYEVSQCJ","bundle":"https://pith.science/pith/INZBNFTTGMGV4EPOUIPYEVSQCJ/bundle.json","state":"https://pith.science/pith/INZBNFTTGMGV4EPOUIPYEVSQCJ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/INZBNFTTGMGV4EPOUIPYEVSQCJ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:INZBNFTTGMGV4EPOUIPYEVSQCJ","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":"54fe1b1f02e7fdb624325a74be6bab399dd3c83f62e70e523ed0126dec28cd67","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-08-26T20:16:42Z","title_canon_sha256":"da0c7265b488da3acbe64396e04da07bd7a67f1ed943fce7df68f03bf8f5ac8d"},"schema_version":"1.0","source":{"id":"1508.06650","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1508.06650","created_at":"2026-05-18T01:27:22Z"},{"alias_kind":"arxiv_version","alias_value":"1508.06650v2","created_at":"2026-05-18T01:27:22Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1508.06650","created_at":"2026-05-18T01:27:22Z"},{"alias_kind":"pith_short_12","alias_value":"INZBNFTTGMGV","created_at":"2026-05-18T12:29:25Z"},{"alias_kind":"pith_short_16","alias_value":"INZBNFTTGMGV4EPO","created_at":"2026-05-18T12:29:25Z"},{"alias_kind":"pith_short_8","alias_value":"INZBNFTT","created_at":"2026-05-18T12:29:25Z"}],"graph_snapshots":[{"event_id":"sha256:58cdefc6406533fb8eaea61a7fef9ae922784f3b5189db9e3389a5d1a10e0929","target":"graph","created_at":"2026-05-18T01:27:22Z","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":"This study aims to characterize linear polarization structures in LOFAR observations of the interstellar medium (ISM) in the 3C196 field, one of the primary fields of the LOFAR-Epoch of Reionization key science project. We have used the high band antennas (HBA) of LOFAR to image this region and Rotation Measure (RM) synthesis to unravel the distribution of polarized structures in Faraday depth. The brightness temperature of the detected Galactic emission is $5-15~{\\rm K}$ in polarized intensity and covers the range from -3 to +8 ${\\rm rad~m^{-2}}$ in Faraday depth. The most interesting morphol","authors_text":"A. G. de Bruyn, A. Ghosh, A. H. Patil, A. R. Offringa, B. Ciardi, E. Chapman, E. R. Fernandez, F. B. Abdalla, G. Harker, G. Mellema, H. Jensen, H. K. Vedantham, I. T. Iliev, K. M. B. Asad, L. V. E. Koopmans, M. A. Brentjens, M. Haverkorn, M. Mevius, S. Bus, S. Kazemi, S. Yatawatta, S. Zaroubi, V. Jeli\\'c, V. N. Pandey","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-08-26T20:16:42Z","title":"Linear polarization structures in LOFAR observations of the interstellar medium in the 3C196 field"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1508.06650","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":"sha256:8714c4104eba21bf8a1efd182b269b2df7dcca2d9e2daaf56bc809955b3c65a0","target":"record","created_at":"2026-05-18T01:27:22Z","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":"54fe1b1f02e7fdb624325a74be6bab399dd3c83f62e70e523ed0126dec28cd67","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-08-26T20:16:42Z","title_canon_sha256":"da0c7265b488da3acbe64396e04da07bd7a67f1ed943fce7df68f03bf8f5ac8d"},"schema_version":"1.0","source":{"id":"1508.06650","kind":"arxiv","version":2}},"canonical_sha256":"4372169673330d5e11eea21f82565012652ec7db4789cb4587e0956444faca6c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"4372169673330d5e11eea21f82565012652ec7db4789cb4587e0956444faca6c","first_computed_at":"2026-05-18T01:27:22.752196Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:27:22.752196Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"hM8MWJLGqg7mjnCBgmuqGOUn7IpHQWUH6mFRsUhsVPQEKvgoKPGP2CnSC+h1UP+qIOsIoPlGJsMRSHN8gUtiBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:27:22.752588Z","signed_message":"canonical_sha256_bytes"},"source_id":"1508.06650","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:8714c4104eba21bf8a1efd182b269b2df7dcca2d9e2daaf56bc809955b3c65a0","sha256:58cdefc6406533fb8eaea61a7fef9ae922784f3b5189db9e3389a5d1a10e0929"],"state_sha256":"129fef964828a20ad20ec4df1eb443139080d005b5c959065543d080327b5868"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"BF53gI2Fm/w8gHhOKa5M5udniC2BSMj+HdsZ+rIrHRIQh9XPBPCTrzbJgqgbeWBM7wur/vwnycXjwDAga/y4BQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T18:37:04.031151Z","bundle_sha256":"33383703489b727490a58eec747565d6b1db810d3dd819910a74bbc582976238"}}