{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:FZLMYE6TJOPGRI6NSM5RM3CRLE","short_pith_number":"pith:FZLMYE6T","canonical_record":{"source":{"id":"1912.10649","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-12-23T07:09:44Z","cross_cats_sorted":[],"title_canon_sha256":"2c6466e9193f5b7b798138ab8cf5a3400626fe95ec9318624822db34d88918e6","abstract_canon_sha256":"38cbec49fa96949b01a7afbcccec5eb2258169168faf20fd19aa1c81fdd14f16"},"schema_version":"1.0"},"canonical_sha256":"2e56cc13d34b9e68a3cd933b166c51592ccfd836a326eccad25c9558bcd8b3eb","source":{"kind":"arxiv","id":"1912.10649","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1912.10649","created_at":"2026-07-05T00:41:53Z"},{"alias_kind":"arxiv_version","alias_value":"1912.10649v2","created_at":"2026-07-05T00:41:53Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1912.10649","created_at":"2026-07-05T00:41:53Z"},{"alias_kind":"pith_short_12","alias_value":"FZLMYE6TJOPG","created_at":"2026-07-05T00:41:53Z"},{"alias_kind":"pith_short_16","alias_value":"FZLMYE6TJOPGRI6N","created_at":"2026-07-05T00:41:53Z"},{"alias_kind":"pith_short_8","alias_value":"FZLMYE6T","created_at":"2026-07-05T00:41:53Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:FZLMYE6TJOPGRI6NSM5RM3CRLE","target":"record","payload":{"canonical_record":{"source":{"id":"1912.10649","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-12-23T07:09:44Z","cross_cats_sorted":[],"title_canon_sha256":"2c6466e9193f5b7b798138ab8cf5a3400626fe95ec9318624822db34d88918e6","abstract_canon_sha256":"38cbec49fa96949b01a7afbcccec5eb2258169168faf20fd19aa1c81fdd14f16"},"schema_version":"1.0"},"canonical_sha256":"2e56cc13d34b9e68a3cd933b166c51592ccfd836a326eccad25c9558bcd8b3eb","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T00:41:53.428649Z","signature_b64":"UquxAn2YTW1foe1M9arO26CANjQxzhaoxVxT5Tl6ZcQmbiJiFT8+lHcrkkzTP2CFcP15Cw86WoWEBXSdYPAPDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2e56cc13d34b9e68a3cd933b166c51592ccfd836a326eccad25c9558bcd8b3eb","last_reissued_at":"2026-07-05T00:41:53.427539Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T00:41:53.427539Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1912.10649","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":"2026-07-05T00:41:53Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+j6cY8cwje5XupsORs2uNdJI7sLerlB/nn/0uY2OJ5/Uzvuu4V8pBlcBDR8+lOAONVww+XefHJBG8oDCos93CA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-21T01:13:57.282120Z"},"content_sha256":"9a199eb88653b003aa8368c00952161d5eb75a69346dbf989b144cc55cea139e","schema_version":"1.0","event_id":"sha256:9a199eb88653b003aa8368c00952161d5eb75a69346dbf989b144cc55cea139e"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:FZLMYE6TJOPGRI6NSM5RM3CRLE","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Gaia-assisted discovery of a detached low-ionisation BAL quasar with very large ejection velocities","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"B. Milvang-Jensen, C. Ledoux, J.-K. Krogager, J. N. Burchett, J. P. U. Fynbo, J. X. Prochaska, K. E. Heintz, L. Christensen, P. Jakobsson, P. M{\\o}ller, P. Noterdaeme, S. J. Geier, T. M. Tripp","submitted_at":"2019-12-23T07:09:44Z","abstract_excerpt":"We report on the discovery of a peculiar Broad Absorption Line (BAL) quasar identified in our Gaia-assisted survey of red quasars. The systemic redshift of this quasar was difficult to establish due to the absence of conspicuous emission lines. Based on deep and broad BAL troughs (at least SiIV, CIV, and AlIII), a redshift of z=2.41 was established under the assumption that the systemic redshift can be inferred from the red edge of the BAL troughs. However, we observe a weak and spatially-extended emission line at 4450 AA most likely due to Lyman-alpha emission, which implies a systemic redshi"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1912.10649","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/1912.10649/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":"2026-07-05T00:41:53Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Y3sL3RQqUjt+UGAhNq57nHUSybetdeGnppnwPyyBlYR4W9y3zkYABc+jwtCiYnKABTNpFRZns3l36OCBZZ7wDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-21T01:13:57.283076Z"},"content_sha256":"aefb630d156c8fcf8f570412881d01e2ae9fbca5bab0c2b5aed72d514ad7a6e1","schema_version":"1.0","event_id":"sha256:aefb630d156c8fcf8f570412881d01e2ae9fbca5bab0c2b5aed72d514ad7a6e1"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/FZLMYE6TJOPGRI6NSM5RM3CRLE/bundle.json","state_url":"https://pith.science/pith/FZLMYE6TJOPGRI6NSM5RM3CRLE/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/FZLMYE6TJOPGRI6NSM5RM3CRLE/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":"2026-08-21T01:13:57Z","links":{"resolver":"https://pith.science/pith/FZLMYE6TJOPGRI6NSM5RM3CRLE","bundle":"https://pith.science/pith/FZLMYE6TJOPGRI6NSM5RM3CRLE/bundle.json","state":"https://pith.science/pith/FZLMYE6TJOPGRI6NSM5RM3CRLE/state.json","well_known_bundle":"https://pith.science/.well-known/pith/FZLMYE6TJOPGRI6NSM5RM3CRLE/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:FZLMYE6TJOPGRI6NSM5RM3CRLE","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":"38cbec49fa96949b01a7afbcccec5eb2258169168faf20fd19aa1c81fdd14f16","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-12-23T07:09:44Z","title_canon_sha256":"2c6466e9193f5b7b798138ab8cf5a3400626fe95ec9318624822db34d88918e6"},"schema_version":"1.0","source":{"id":"1912.10649","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1912.10649","created_at":"2026-07-05T00:41:53Z"},{"alias_kind":"arxiv_version","alias_value":"1912.10649v2","created_at":"2026-07-05T00:41:53Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1912.10649","created_at":"2026-07-05T00:41:53Z"},{"alias_kind":"pith_short_12","alias_value":"FZLMYE6TJOPG","created_at":"2026-07-05T00:41:53Z"},{"alias_kind":"pith_short_16","alias_value":"FZLMYE6TJOPGRI6N","created_at":"2026-07-05T00:41:53Z"},{"alias_kind":"pith_short_8","alias_value":"FZLMYE6T","created_at":"2026-07-05T00:41:53Z"}],"graph_snapshots":[{"event_id":"sha256:aefb630d156c8fcf8f570412881d01e2ae9fbca5bab0c2b5aed72d514ad7a6e1","target":"graph","created_at":"2026-07-05T00:41:53Z","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/1912.10649/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We report on the discovery of a peculiar Broad Absorption Line (BAL) quasar identified in our Gaia-assisted survey of red quasars. The systemic redshift of this quasar was difficult to establish due to the absence of conspicuous emission lines. Based on deep and broad BAL troughs (at least SiIV, CIV, and AlIII), a redshift of z=2.41 was established under the assumption that the systemic redshift can be inferred from the red edge of the BAL troughs. However, we observe a weak and spatially-extended emission line at 4450 AA most likely due to Lyman-alpha emission, which implies a systemic redshi","authors_text":"B. Milvang-Jensen, C. Ledoux, J.-K. Krogager, J. N. Burchett, J. P. U. Fynbo, J. X. Prochaska, K. E. Heintz, L. Christensen, P. Jakobsson, P. M{\\o}ller, P. Noterdaeme, S. J. Geier, T. M. Tripp","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-12-23T07:09:44Z","title":"Gaia-assisted discovery of a detached low-ionisation BAL quasar with very large ejection velocities"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1912.10649","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":"sha256:9a199eb88653b003aa8368c00952161d5eb75a69346dbf989b144cc55cea139e","target":"record","created_at":"2026-07-05T00:41:53Z","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":"38cbec49fa96949b01a7afbcccec5eb2258169168faf20fd19aa1c81fdd14f16","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-12-23T07:09:44Z","title_canon_sha256":"2c6466e9193f5b7b798138ab8cf5a3400626fe95ec9318624822db34d88918e6"},"schema_version":"1.0","source":{"id":"1912.10649","kind":"arxiv","version":2}},"canonical_sha256":"2e56cc13d34b9e68a3cd933b166c51592ccfd836a326eccad25c9558bcd8b3eb","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2e56cc13d34b9e68a3cd933b166c51592ccfd836a326eccad25c9558bcd8b3eb","first_computed_at":"2026-07-05T00:41:53.427539Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T00:41:53.427539Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"UquxAn2YTW1foe1M9arO26CANjQxzhaoxVxT5Tl6ZcQmbiJiFT8+lHcrkkzTP2CFcP15Cw86WoWEBXSdYPAPDw==","signature_status":"signed_v1","signed_at":"2026-07-05T00:41:53.428649Z","signed_message":"canonical_sha256_bytes"},"source_id":"1912.10649","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9a199eb88653b003aa8368c00952161d5eb75a69346dbf989b144cc55cea139e","sha256:aefb630d156c8fcf8f570412881d01e2ae9fbca5bab0c2b5aed72d514ad7a6e1"],"state_sha256":"bc7cc0ea6ac5a7b2a96cf749274ee1781c8cf2e77711fe657b96b72237caacd8"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2czOeZjqzMp6LgXFT7TT57yaVtpXmiwyEbl9u4pQhXupQ2nK69jHzUeskzenXWOrstlGxXX9CDYFMhg9/VV+AQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-21T01:13:57.292307Z","bundle_sha256":"d54e7eacc562c83af4bb2c2277cce6b31a8661394957250937cf26a3f6e73f69"}}