{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:NUWME6X6EKDVXK2BAMEH2VBOZN","short_pith_number":"pith:NUWME6X6","canonical_record":{"source":{"id":"1102.3918","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-02-18T21:00:05Z","cross_cats_sorted":[],"title_canon_sha256":"e24491c39ac22865fe7725ea17ed2c8a18bb7791eed53d2bc68fb3bb25ae0159","abstract_canon_sha256":"46415b7cadcaead0e51f4d1e384b538d75b96fae6db783a344a5ea867ffab55c"},"schema_version":"1.0"},"canonical_sha256":"6d2cc27afe22875bab4103087d542ecb6c6c841f7e982e851191a489806d10a3","source":{"kind":"arxiv","id":"1102.3918","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1102.3918","created_at":"2026-05-18T02:03:09Z"},{"alias_kind":"arxiv_version","alias_value":"1102.3918v1","created_at":"2026-05-18T02:03:09Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1102.3918","created_at":"2026-05-18T02:03:09Z"},{"alias_kind":"pith_short_12","alias_value":"NUWME6X6EKDV","created_at":"2026-05-18T12:26:37Z"},{"alias_kind":"pith_short_16","alias_value":"NUWME6X6EKDVXK2B","created_at":"2026-05-18T12:26:37Z"},{"alias_kind":"pith_short_8","alias_value":"NUWME6X6","created_at":"2026-05-18T12:26:37Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:NUWME6X6EKDVXK2BAMEH2VBOZN","target":"record","payload":{"canonical_record":{"source":{"id":"1102.3918","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-02-18T21:00:05Z","cross_cats_sorted":[],"title_canon_sha256":"e24491c39ac22865fe7725ea17ed2c8a18bb7791eed53d2bc68fb3bb25ae0159","abstract_canon_sha256":"46415b7cadcaead0e51f4d1e384b538d75b96fae6db783a344a5ea867ffab55c"},"schema_version":"1.0"},"canonical_sha256":"6d2cc27afe22875bab4103087d542ecb6c6c841f7e982e851191a489806d10a3","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:03:09.224185Z","signature_b64":"Y5/lVqRZQccAlXuAjBQQML4vqVkoTBKGH4DWK6/wc4EfYLcpqYiIu7uWpBOTayAQKbTEavgKtsfXXJHjb6ATAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6d2cc27afe22875bab4103087d542ecb6c6c841f7e982e851191a489806d10a3","last_reissued_at":"2026-05-18T02:03:09.223496Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:03:09.223496Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1102.3918","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":"2026-05-18T02:03:09Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"uDHYv0QqS9rxDzuFHqgHMb0fPalcDXS2kN0FtP3Q7n2BWFN1EgQKDE4O6jgm/FHcKQSUBfAzvxMjY/cxv+VJDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T19:23:40.967116Z"},"content_sha256":"e9079e5823da1fa09847b944aa6068d6c609740657187dc33ddd0c655fed3ec3","schema_version":"1.0","event_id":"sha256:e9079e5823da1fa09847b944aa6068d6c609740657187dc33ddd0c655fed3ec3"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:NUWME6X6EKDVXK2BAMEH2VBOZN","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The Line Polarization Within a Giant Lyman-alpha Nebula","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"(2) University of Arizona, 3), (3) NSF, (4) NOAO), Arjun Dey (4) ((1) UC Santa Barbara, Gary D. Schmidt (2, Moire K. M. Prescott (1), Paul S. Smith (2)","submitted_at":"2011-02-18T21:00:05Z","abstract_excerpt":"Recent theoretical work has suggested that Lyman-alpha nebulae could be substantially polarized in the Lyman-alpha emission line, depending on the geometry, kinematics, and powering mechanism at work. Polarization observations can therefore provide a useful constraint on the source of ionization in these systems. In this Letter, we present the first Lyman-alpha polarization measurements for a giant Lyman-alpha nebula at z~2.656. We do not detect any significant linear polarization of the Lyman-alpha emission: P_{Lyman-alpha}=2.6+/-2.8% (corrected for statistical bias) within a single large ape"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1102.3918","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":"2026-05-18T02:03:09Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"JUMhE76FqqZW8enzr9A/AGjem5GNzyCFyTyVJA8k9CkAFxFCSwosXRs8zuDjCR2OqVQ9xHSIMP3myh35oNiwCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T19:23:40.967462Z"},"content_sha256":"8f61ead86c4516fdd466e8b2e683c77e6dfb6e13066ae2a3639924ba40c03d70","schema_version":"1.0","event_id":"sha256:8f61ead86c4516fdd466e8b2e683c77e6dfb6e13066ae2a3639924ba40c03d70"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/NUWME6X6EKDVXK2BAMEH2VBOZN/bundle.json","state_url":"https://pith.science/pith/NUWME6X6EKDVXK2BAMEH2VBOZN/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/NUWME6X6EKDVXK2BAMEH2VBOZN/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":"2026-06-04T19:23:40Z","links":{"resolver":"https://pith.science/pith/NUWME6X6EKDVXK2BAMEH2VBOZN","bundle":"https://pith.science/pith/NUWME6X6EKDVXK2BAMEH2VBOZN/bundle.json","state":"https://pith.science/pith/NUWME6X6EKDVXK2BAMEH2VBOZN/state.json","well_known_bundle":"https://pith.science/.well-known/pith/NUWME6X6EKDVXK2BAMEH2VBOZN/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:NUWME6X6EKDVXK2BAMEH2VBOZN","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":"46415b7cadcaead0e51f4d1e384b538d75b96fae6db783a344a5ea867ffab55c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-02-18T21:00:05Z","title_canon_sha256":"e24491c39ac22865fe7725ea17ed2c8a18bb7791eed53d2bc68fb3bb25ae0159"},"schema_version":"1.0","source":{"id":"1102.3918","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1102.3918","created_at":"2026-05-18T02:03:09Z"},{"alias_kind":"arxiv_version","alias_value":"1102.3918v1","created_at":"2026-05-18T02:03:09Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1102.3918","created_at":"2026-05-18T02:03:09Z"},{"alias_kind":"pith_short_12","alias_value":"NUWME6X6EKDV","created_at":"2026-05-18T12:26:37Z"},{"alias_kind":"pith_short_16","alias_value":"NUWME6X6EKDVXK2B","created_at":"2026-05-18T12:26:37Z"},{"alias_kind":"pith_short_8","alias_value":"NUWME6X6","created_at":"2026-05-18T12:26:37Z"}],"graph_snapshots":[{"event_id":"sha256:8f61ead86c4516fdd466e8b2e683c77e6dfb6e13066ae2a3639924ba40c03d70","target":"graph","created_at":"2026-05-18T02:03:09Z","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":"Recent theoretical work has suggested that Lyman-alpha nebulae could be substantially polarized in the Lyman-alpha emission line, depending on the geometry, kinematics, and powering mechanism at work. Polarization observations can therefore provide a useful constraint on the source of ionization in these systems. In this Letter, we present the first Lyman-alpha polarization measurements for a giant Lyman-alpha nebula at z~2.656. We do not detect any significant linear polarization of the Lyman-alpha emission: P_{Lyman-alpha}=2.6+/-2.8% (corrected for statistical bias) within a single large ape","authors_text":"(2) University of Arizona, 3), (3) NSF, (4) NOAO), Arjun Dey (4) ((1) UC Santa Barbara, Gary D. Schmidt (2, Moire K. M. Prescott (1), Paul S. Smith (2)","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-02-18T21:00:05Z","title":"The Line Polarization Within a Giant Lyman-alpha Nebula"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1102.3918","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:e9079e5823da1fa09847b944aa6068d6c609740657187dc33ddd0c655fed3ec3","target":"record","created_at":"2026-05-18T02:03:09Z","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":"46415b7cadcaead0e51f4d1e384b538d75b96fae6db783a344a5ea867ffab55c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-02-18T21:00:05Z","title_canon_sha256":"e24491c39ac22865fe7725ea17ed2c8a18bb7791eed53d2bc68fb3bb25ae0159"},"schema_version":"1.0","source":{"id":"1102.3918","kind":"arxiv","version":1}},"canonical_sha256":"6d2cc27afe22875bab4103087d542ecb6c6c841f7e982e851191a489806d10a3","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6d2cc27afe22875bab4103087d542ecb6c6c841f7e982e851191a489806d10a3","first_computed_at":"2026-05-18T02:03:09.223496Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:03:09.223496Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Y5/lVqRZQccAlXuAjBQQML4vqVkoTBKGH4DWK6/wc4EfYLcpqYiIu7uWpBOTayAQKbTEavgKtsfXXJHjb6ATAA==","signature_status":"signed_v1","signed_at":"2026-05-18T02:03:09.224185Z","signed_message":"canonical_sha256_bytes"},"source_id":"1102.3918","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e9079e5823da1fa09847b944aa6068d6c609740657187dc33ddd0c655fed3ec3","sha256:8f61ead86c4516fdd466e8b2e683c77e6dfb6e13066ae2a3639924ba40c03d70"],"state_sha256":"339feb02d3dab9df93fb0312f6601d02e08d54cbf7c5c6d9c662ebf42560d191"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"mF4SNhxEtsm+CgL7AkX35QKFL4SYtWwSdAXRhwI3CaPZbyt5qG9N3qrrszL2aw6Uy1wGj5NDyZKpWi0qXPA7Aw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-04T19:23:40.969283Z","bundle_sha256":"ff0f5a1601a051a2ac7e9e3553e35236f96c3d81ab8d71d00f24f47272e11020"}}