{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2009:P2HSO7OO5JDNDNTETASHRUCAVU","short_pith_number":"pith:P2HSO7OO","canonical_record":{"source":{"id":"0906.0248","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2009-06-01T10:01:36Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"74ddc700b6d124edd1469390316dbb3b5655fc5c8cc32a5035668e5d249f41de","abstract_canon_sha256":"c41a1dd783d3e2ecb2e3f901610a43a413ca1dd05fae180471d3d602c5b1e51c"},"schema_version":"1.0"},"canonical_sha256":"7e8f277dceea46d1b664982478d040ad3b8890b26dc7e6c4d434823ff67fdcfb","source":{"kind":"arxiv","id":"0906.0248","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0906.0248","created_at":"2026-05-18T02:13:30Z"},{"alias_kind":"arxiv_version","alias_value":"0906.0248v1","created_at":"2026-05-18T02:13:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0906.0248","created_at":"2026-05-18T02:13:30Z"},{"alias_kind":"pith_short_12","alias_value":"P2HSO7OO5JDN","created_at":"2026-05-18T12:26:01Z"},{"alias_kind":"pith_short_16","alias_value":"P2HSO7OO5JDNDNTE","created_at":"2026-05-18T12:26:01Z"},{"alias_kind":"pith_short_8","alias_value":"P2HSO7OO","created_at":"2026-05-18T12:26:01Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2009:P2HSO7OO5JDNDNTETASHRUCAVU","target":"record","payload":{"canonical_record":{"source":{"id":"0906.0248","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2009-06-01T10:01:36Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"74ddc700b6d124edd1469390316dbb3b5655fc5c8cc32a5035668e5d249f41de","abstract_canon_sha256":"c41a1dd783d3e2ecb2e3f901610a43a413ca1dd05fae180471d3d602c5b1e51c"},"schema_version":"1.0"},"canonical_sha256":"7e8f277dceea46d1b664982478d040ad3b8890b26dc7e6c4d434823ff67fdcfb","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:13:30.185709Z","signature_b64":"cWAAn+pMtyv3z4weWHOA35gSaze0VVhhVxn+jZwXKIKFUJmAl621ffiqrAEIQ2Lp/M4u8kH2QPeiwQOc/H9nDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7e8f277dceea46d1b664982478d040ad3b8890b26dc7e6c4d434823ff67fdcfb","last_reissued_at":"2026-05-18T02:13:30.185049Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:13:30.185049Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0906.0248","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":"2026-05-18T02:13:30Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"gmjcgF9NcpeChMGjgoJn1nnBGBYRNEioc/60sX4AeAEj5u1Pky0/aI0pJ/P4znTWpxl4XU5bycW8bdO2TytnDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T22:39:49.339652Z"},"content_sha256":"9c8f8b0c33daea844db7914ab1f2fd219e9f234fc19732e9a3e1541141017db2","schema_version":"1.0","event_id":"sha256:9c8f8b0c33daea844db7914ab1f2fd219e9f234fc19732e9a3e1541141017db2"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2009:P2HSO7OO5JDNDNTETASHRUCAVU","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Optical and submillimetre observations of Bok globules -- tracing the magnetic field from low to high density","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.GA","authors_text":"(2) Assam University, A.K. Sen (2), D. Nutter (1) ((1) Cardiff University, D. Ward-Thompson (1), India), J.M. Kirk (1), United Kingdom","submitted_at":"2009-06-01T10:01:36Z","abstract_excerpt":"We present optical and submillimetre polarimetry data of the Bok globule CB3 and optical polarimetry data of the Bok globule CB246. We use each set of polarimetry data to infer the B-field orientation in each of the clouds. The optical data can only be used in the low density, low extinction edge regions of clouds. The submillimetre data can only be used in the high column-density, central regions of the clouds.\n  It has previously been found that near-infrared polarisation mapping of background stars does not accurately trace the magnetic field in dense cloud regions. This may be due to a lac"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0906.0248","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":"2026-05-18T02:13:30Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"HTgohbioZpHQv6v3BlIrap8nNDxcPSM+t0Ih5hwoNN8/cw9xTbNLa1GlVQMtPPVZxiVUasRXcCdTQIiF3LHFAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T22:39:49.340015Z"},"content_sha256":"b077d96042bd2a6f2a9e35d9678e3a73c17c20c84b10c15a099f369886983561","schema_version":"1.0","event_id":"sha256:b077d96042bd2a6f2a9e35d9678e3a73c17c20c84b10c15a099f369886983561"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/P2HSO7OO5JDNDNTETASHRUCAVU/bundle.json","state_url":"https://pith.science/pith/P2HSO7OO5JDNDNTETASHRUCAVU/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/P2HSO7OO5JDNDNTETASHRUCAVU/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":"2026-06-02T22:39:49Z","links":{"resolver":"https://pith.science/pith/P2HSO7OO5JDNDNTETASHRUCAVU","bundle":"https://pith.science/pith/P2HSO7OO5JDNDNTETASHRUCAVU/bundle.json","state":"https://pith.science/pith/P2HSO7OO5JDNDNTETASHRUCAVU/state.json","well_known_bundle":"https://pith.science/.well-known/pith/P2HSO7OO5JDNDNTETASHRUCAVU/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:P2HSO7OO5JDNDNTETASHRUCAVU","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":"c41a1dd783d3e2ecb2e3f901610a43a413ca1dd05fae180471d3d602c5b1e51c","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2009-06-01T10:01:36Z","title_canon_sha256":"74ddc700b6d124edd1469390316dbb3b5655fc5c8cc32a5035668e5d249f41de"},"schema_version":"1.0","source":{"id":"0906.0248","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0906.0248","created_at":"2026-05-18T02:13:30Z"},{"alias_kind":"arxiv_version","alias_value":"0906.0248v1","created_at":"2026-05-18T02:13:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0906.0248","created_at":"2026-05-18T02:13:30Z"},{"alias_kind":"pith_short_12","alias_value":"P2HSO7OO5JDN","created_at":"2026-05-18T12:26:01Z"},{"alias_kind":"pith_short_16","alias_value":"P2HSO7OO5JDNDNTE","created_at":"2026-05-18T12:26:01Z"},{"alias_kind":"pith_short_8","alias_value":"P2HSO7OO","created_at":"2026-05-18T12:26:01Z"}],"graph_snapshots":[{"event_id":"sha256:b077d96042bd2a6f2a9e35d9678e3a73c17c20c84b10c15a099f369886983561","target":"graph","created_at":"2026-05-18T02:13:30Z","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":"We present optical and submillimetre polarimetry data of the Bok globule CB3 and optical polarimetry data of the Bok globule CB246. We use each set of polarimetry data to infer the B-field orientation in each of the clouds. The optical data can only be used in the low density, low extinction edge regions of clouds. The submillimetre data can only be used in the high column-density, central regions of the clouds.\n  It has previously been found that near-infrared polarisation mapping of background stars does not accurately trace the magnetic field in dense cloud regions. This may be due to a lac","authors_text":"(2) Assam University, A.K. Sen (2), D. Nutter (1) ((1) Cardiff University, D. Ward-Thompson (1), India), J.M. Kirk (1), United Kingdom","cross_cats":["astro-ph.SR"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2009-06-01T10:01:36Z","title":"Optical and submillimetre observations of Bok globules -- tracing the magnetic field from low to high density"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0906.0248","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":"sha256:9c8f8b0c33daea844db7914ab1f2fd219e9f234fc19732e9a3e1541141017db2","target":"record","created_at":"2026-05-18T02:13:30Z","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":"c41a1dd783d3e2ecb2e3f901610a43a413ca1dd05fae180471d3d602c5b1e51c","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2009-06-01T10:01:36Z","title_canon_sha256":"74ddc700b6d124edd1469390316dbb3b5655fc5c8cc32a5035668e5d249f41de"},"schema_version":"1.0","source":{"id":"0906.0248","kind":"arxiv","version":1}},"canonical_sha256":"7e8f277dceea46d1b664982478d040ad3b8890b26dc7e6c4d434823ff67fdcfb","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7e8f277dceea46d1b664982478d040ad3b8890b26dc7e6c4d434823ff67fdcfb","first_computed_at":"2026-05-18T02:13:30.185049Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:13:30.185049Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"cWAAn+pMtyv3z4weWHOA35gSaze0VVhhVxn+jZwXKIKFUJmAl621ffiqrAEIQ2Lp/M4u8kH2QPeiwQOc/H9nDg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:13:30.185709Z","signed_message":"canonical_sha256_bytes"},"source_id":"0906.0248","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9c8f8b0c33daea844db7914ab1f2fd219e9f234fc19732e9a3e1541141017db2","sha256:b077d96042bd2a6f2a9e35d9678e3a73c17c20c84b10c15a099f369886983561"],"state_sha256":"e1747aa7dfc39a1310d409a48af02ddd866f30cc8788c97d36a18d9ae284eabf"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"FVtdZ2Ah7hJnLUuR4MTq/ZedAkVB0DJAVxTBiCvJ5IhQHsXhul3TqncwNpN1Eq1M8QgM59KoUYPG9zDovdCYCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-02T22:39:49.342059Z","bundle_sha256":"98f155c82671ea5fda6c22622ff2df568a14e13d7fa20e8d11187fdb861afd49"}}