{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:2H4QGBBWCS7UT5WCFSP6EUBDEZ","short_pith_number":"pith:2H4QGBBW","canonical_record":{"source":{"id":"1103.1932","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-03-10T02:57:40Z","cross_cats_sorted":[],"title_canon_sha256":"e35b1ec4df5e063b3adce8f63e40f810d0485463e25fee082c01d490c2a26be4","abstract_canon_sha256":"40932c58eb77f7579752de4f3351c886b981207fe3eba5b3873db3fdc34df597"},"schema_version":"1.0"},"canonical_sha256":"d1f903043614bf49f6c22c9fe25023265c0a50cec5e0355f84aeb07b16515dd5","source":{"kind":"arxiv","id":"1103.1932","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1103.1932","created_at":"2026-05-18T02:02:55Z"},{"alias_kind":"arxiv_version","alias_value":"1103.1932v1","created_at":"2026-05-18T02:02:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1103.1932","created_at":"2026-05-18T02:02:55Z"},{"alias_kind":"pith_short_12","alias_value":"2H4QGBBWCS7U","created_at":"2026-05-18T12:26:18Z"},{"alias_kind":"pith_short_16","alias_value":"2H4QGBBWCS7UT5WC","created_at":"2026-05-18T12:26:18Z"},{"alias_kind":"pith_short_8","alias_value":"2H4QGBBW","created_at":"2026-05-18T12:26:18Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:2H4QGBBWCS7UT5WCFSP6EUBDEZ","target":"record","payload":{"canonical_record":{"source":{"id":"1103.1932","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-03-10T02:57:40Z","cross_cats_sorted":[],"title_canon_sha256":"e35b1ec4df5e063b3adce8f63e40f810d0485463e25fee082c01d490c2a26be4","abstract_canon_sha256":"40932c58eb77f7579752de4f3351c886b981207fe3eba5b3873db3fdc34df597"},"schema_version":"1.0"},"canonical_sha256":"d1f903043614bf49f6c22c9fe25023265c0a50cec5e0355f84aeb07b16515dd5","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:02:55.382898Z","signature_b64":"DHL4r7DqTaHGQCc3/lIeGCH988V+gOlsWgLVgvoZsNak5i6QBaonlWrun72NG1cZbGNw+hZu0XYeyLpPT3wrBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d1f903043614bf49f6c22c9fe25023265c0a50cec5e0355f84aeb07b16515dd5","last_reissued_at":"2026-05-18T02:02:55.382239Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:02:55.382239Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1103.1932","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":"2026-05-18T02:02:55Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"uidXdJuBOIpah8fOh7i0/NdJe9ZEDO6YeqW9mMi9bS9Rsna5tYS9i8ChPqAZJmO0ZVblCvWdpdZ15k2xqPC2Bw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T05:54:08.240097Z"},"content_sha256":"e0dd83c51656221cc0301f907e88a7dc3b4fd73e96994aa681d47f045e78fa5e","schema_version":"1.0","event_id":"sha256:e0dd83c51656221cc0301f907e88a7dc3b4fd73e96994aa681d47f045e78fa5e"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:2H4QGBBWCS7UT5WCFSP6EUBDEZ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Towards Detecting The 2175-{\\AA} Dust Feature Associated With Strong High Redshift Mg {\\ss}II Absorption Lines","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"Hongyan Zhou, Jian Ge, Junxian Wang, Peng Jiang, Tinggui Wang","submitted_at":"2011-03-10T02:57:40Z","abstract_excerpt":"We report detections of 39 2175-{\\AA} dust extinction bump candidates associated with strong Mg II absorption lines at z$\\sim$ 1--1.8 on quasar spectra in Sloan Digital Sky Survey (SDSS) DR3. These strong Mg II absorption line systems are detected among 2,951 strong Mg II absorbers with the rest equivalent width $W_r\\lambda2796 >$ 1.0{\\AA} at $1.0 < z < 1.86$, which is part of a full sample of 7,421 strong Mg II absorbers compiled by Prochter et al. (2006). The redshift range of the absorbers is chosen to allow the 2175-{\\AA} extinction features to be completely covered within the SDSS spectro"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1103.1932","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":"2026-05-18T02:02:55Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"E140v4E4HgiW05vp5w3+Sg/coTZvRaSzlxt4QTu/AxiV0QNYZjnS4dyBc355FRPTQh0DBSJ7NVKbZ/q5+ECoDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T05:54:08.240805Z"},"content_sha256":"bc76ddeacde7ada726bdbc5a4bd1d6a1a8136d38a28b4183f40bfa727ff7cbb5","schema_version":"1.0","event_id":"sha256:bc76ddeacde7ada726bdbc5a4bd1d6a1a8136d38a28b4183f40bfa727ff7cbb5"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/2H4QGBBWCS7UT5WCFSP6EUBDEZ/bundle.json","state_url":"https://pith.science/pith/2H4QGBBWCS7UT5WCFSP6EUBDEZ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/2H4QGBBWCS7UT5WCFSP6EUBDEZ/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":"2026-05-26T05:54:08Z","links":{"resolver":"https://pith.science/pith/2H4QGBBWCS7UT5WCFSP6EUBDEZ","bundle":"https://pith.science/pith/2H4QGBBWCS7UT5WCFSP6EUBDEZ/bundle.json","state":"https://pith.science/pith/2H4QGBBWCS7UT5WCFSP6EUBDEZ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/2H4QGBBWCS7UT5WCFSP6EUBDEZ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:2H4QGBBWCS7UT5WCFSP6EUBDEZ","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":"40932c58eb77f7579752de4f3351c886b981207fe3eba5b3873db3fdc34df597","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-03-10T02:57:40Z","title_canon_sha256":"e35b1ec4df5e063b3adce8f63e40f810d0485463e25fee082c01d490c2a26be4"},"schema_version":"1.0","source":{"id":"1103.1932","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1103.1932","created_at":"2026-05-18T02:02:55Z"},{"alias_kind":"arxiv_version","alias_value":"1103.1932v1","created_at":"2026-05-18T02:02:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1103.1932","created_at":"2026-05-18T02:02:55Z"},{"alias_kind":"pith_short_12","alias_value":"2H4QGBBWCS7U","created_at":"2026-05-18T12:26:18Z"},{"alias_kind":"pith_short_16","alias_value":"2H4QGBBWCS7UT5WC","created_at":"2026-05-18T12:26:18Z"},{"alias_kind":"pith_short_8","alias_value":"2H4QGBBW","created_at":"2026-05-18T12:26:18Z"}],"graph_snapshots":[{"event_id":"sha256:bc76ddeacde7ada726bdbc5a4bd1d6a1a8136d38a28b4183f40bfa727ff7cbb5","target":"graph","created_at":"2026-05-18T02:02:55Z","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 report detections of 39 2175-{\\AA} dust extinction bump candidates associated with strong Mg II absorption lines at z$\\sim$ 1--1.8 on quasar spectra in Sloan Digital Sky Survey (SDSS) DR3. These strong Mg II absorption line systems are detected among 2,951 strong Mg II absorbers with the rest equivalent width $W_r\\lambda2796 >$ 1.0{\\AA} at $1.0 < z < 1.86$, which is part of a full sample of 7,421 strong Mg II absorbers compiled by Prochter et al. (2006). The redshift range of the absorbers is chosen to allow the 2175-{\\AA} extinction features to be completely covered within the SDSS spectro","authors_text":"Hongyan Zhou, Jian Ge, Junxian Wang, Peng Jiang, Tinggui Wang","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-03-10T02:57:40Z","title":"Towards Detecting The 2175-{\\AA} Dust Feature Associated With Strong High Redshift Mg {\\ss}II Absorption Lines"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1103.1932","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:e0dd83c51656221cc0301f907e88a7dc3b4fd73e96994aa681d47f045e78fa5e","target":"record","created_at":"2026-05-18T02:02:55Z","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":"40932c58eb77f7579752de4f3351c886b981207fe3eba5b3873db3fdc34df597","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-03-10T02:57:40Z","title_canon_sha256":"e35b1ec4df5e063b3adce8f63e40f810d0485463e25fee082c01d490c2a26be4"},"schema_version":"1.0","source":{"id":"1103.1932","kind":"arxiv","version":1}},"canonical_sha256":"d1f903043614bf49f6c22c9fe25023265c0a50cec5e0355f84aeb07b16515dd5","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d1f903043614bf49f6c22c9fe25023265c0a50cec5e0355f84aeb07b16515dd5","first_computed_at":"2026-05-18T02:02:55.382239Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:02:55.382239Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"DHL4r7DqTaHGQCc3/lIeGCH988V+gOlsWgLVgvoZsNak5i6QBaonlWrun72NG1cZbGNw+hZu0XYeyLpPT3wrBA==","signature_status":"signed_v1","signed_at":"2026-05-18T02:02:55.382898Z","signed_message":"canonical_sha256_bytes"},"source_id":"1103.1932","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e0dd83c51656221cc0301f907e88a7dc3b4fd73e96994aa681d47f045e78fa5e","sha256:bc76ddeacde7ada726bdbc5a4bd1d6a1a8136d38a28b4183f40bfa727ff7cbb5"],"state_sha256":"9adba8a17ee0383169c4c8519162ae46e52ea6e530c791663f4e2d8ad495f9d1"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Qv67ZFPXAuwPoIIUp5sN3JXm1nJpoeBWZSnR+GpSQQbitvnUImIvj/PDc1yI1lWpsfUQVJ/EKdf2tYlq8/bkCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T05:54:08.244553Z","bundle_sha256":"e5e341f2b7b3911634e687cfb8e99c0b9d6b224aa83f72205860eb8ee4c3b710"}}