{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2024:LM6JKQY2XAFT6SQEP3XPCZID4U","short_pith_number":"pith:LM6JKQY2","canonical_record":{"source":{"id":"2406.17598","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2024-06-25T14:41:06Z","cross_cats_sorted":[],"title_canon_sha256":"0504613713e20590a72ce73cf6262a9a683425f680171a7c016678108c517a41","abstract_canon_sha256":"ca55a39f027d2511064d9425b19b38252a5a45259d11326eabf9c982b9ea000f"},"schema_version":"1.0"},"canonical_sha256":"5b3c95431ab80b3f4a047eeef16503e526afa9b5acec764c7bb006eaba5191e4","source":{"kind":"arxiv","id":"2406.17598","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2406.17598","created_at":"2026-07-05T09:20:44Z"},{"alias_kind":"arxiv_version","alias_value":"2406.17598v2","created_at":"2026-07-05T09:20:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2406.17598","created_at":"2026-07-05T09:20:44Z"},{"alias_kind":"pith_short_12","alias_value":"LM6JKQY2XAFT","created_at":"2026-07-05T09:20:44Z"},{"alias_kind":"pith_short_16","alias_value":"LM6JKQY2XAFT6SQE","created_at":"2026-07-05T09:20:44Z"},{"alias_kind":"pith_short_8","alias_value":"LM6JKQY2","created_at":"2026-07-05T09:20:44Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2024:LM6JKQY2XAFT6SQEP3XPCZID4U","target":"record","payload":{"canonical_record":{"source":{"id":"2406.17598","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2024-06-25T14:41:06Z","cross_cats_sorted":[],"title_canon_sha256":"0504613713e20590a72ce73cf6262a9a683425f680171a7c016678108c517a41","abstract_canon_sha256":"ca55a39f027d2511064d9425b19b38252a5a45259d11326eabf9c982b9ea000f"},"schema_version":"1.0"},"canonical_sha256":"5b3c95431ab80b3f4a047eeef16503e526afa9b5acec764c7bb006eaba5191e4","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T09:20:44.669185Z","signature_b64":"Smb3oJta1H+jeEcnMlYizM19aWNO19+m+9hcikbYFbgBbixegMSx0hAHP4ZqfEaEgtzdot4kSMGdj9MAhbmtAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"5b3c95431ab80b3f4a047eeef16503e526afa9b5acec764c7bb006eaba5191e4","last_reissued_at":"2026-07-05T09:20:44.668804Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T09:20:44.668804Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2406.17598","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":"2026-07-05T09:20:44Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"R8Gp73yG7ybhcvfIf6htkpnsnK5YsabhBlGIktOuIKYbhH4WxsoIb3O95AyNhwExjqL2XR2Vfwwz6QhBKdRwDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T02:09:44.614191Z"},"content_sha256":"cac3c64c24f8d8f63b05f14d10143a8260bbdcdfac4a6faffb66a883a957a034","schema_version":"1.0","event_id":"sha256:cac3c64c24f8d8f63b05f14d10143a8260bbdcdfac4a6faffb66a883a957a034"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2024:LM6JKQY2XAFT6SQEP3XPCZID4U","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Prior-Informed AGN-Host Spectral Decomposition Using PyQSOFit","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Colin J. Burke, Hengxiao Guo, John D. Silverman, Junxian Wang, Shu Wang, Wenke Ren, Yue Shen","submitted_at":"2024-06-25T14:41:06Z","abstract_excerpt":"We introduce an improved method for decomposing the emission of active galactic nuclei (AGN) and their host galaxies using templates from principal component analysis (PCA). This approach integrates prior information from PCA with a penalized pixel fitting mechanism which improves the precision and effectiveness of the decomposition process. Specifically, we have reduced the degeneracy and over-fitting in AGN-host decomposition, particularly for those with low signal-to-noise ratios (SNR), where traditional methods tend to fail. By applying our method to 76,565 SDSS Data Release 16 quasars wit"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2406.17598","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/2406.17598/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":"2026-07-05T09:20:44Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"iRDYy5k3m2RNjLNWeq4NNim+BVlj5UrHcgNv56rm9k47P3Ub53UPy1eN+SImJGOLBOkI02uyL0PQQWD3e5EmBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T02:09:44.614559Z"},"content_sha256":"b65d6a136bb3e2dc8c2448af6e359e2d72917ed2d0a33a5887da88b3cdf61576","schema_version":"1.0","event_id":"sha256:b65d6a136bb3e2dc8c2448af6e359e2d72917ed2d0a33a5887da88b3cdf61576"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/LM6JKQY2XAFT6SQEP3XPCZID4U/bundle.json","state_url":"https://pith.science/pith/LM6JKQY2XAFT6SQEP3XPCZID4U/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/LM6JKQY2XAFT6SQEP3XPCZID4U/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":"2026-08-05T02:09:44Z","links":{"resolver":"https://pith.science/pith/LM6JKQY2XAFT6SQEP3XPCZID4U","bundle":"https://pith.science/pith/LM6JKQY2XAFT6SQEP3XPCZID4U/bundle.json","state":"https://pith.science/pith/LM6JKQY2XAFT6SQEP3XPCZID4U/state.json","well_known_bundle":"https://pith.science/.well-known/pith/LM6JKQY2XAFT6SQEP3XPCZID4U/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2024:LM6JKQY2XAFT6SQEP3XPCZID4U","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":"ca55a39f027d2511064d9425b19b38252a5a45259d11326eabf9c982b9ea000f","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2024-06-25T14:41:06Z","title_canon_sha256":"0504613713e20590a72ce73cf6262a9a683425f680171a7c016678108c517a41"},"schema_version":"1.0","source":{"id":"2406.17598","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2406.17598","created_at":"2026-07-05T09:20:44Z"},{"alias_kind":"arxiv_version","alias_value":"2406.17598v2","created_at":"2026-07-05T09:20:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2406.17598","created_at":"2026-07-05T09:20:44Z"},{"alias_kind":"pith_short_12","alias_value":"LM6JKQY2XAFT","created_at":"2026-07-05T09:20:44Z"},{"alias_kind":"pith_short_16","alias_value":"LM6JKQY2XAFT6SQE","created_at":"2026-07-05T09:20:44Z"},{"alias_kind":"pith_short_8","alias_value":"LM6JKQY2","created_at":"2026-07-05T09:20:44Z"}],"graph_snapshots":[{"event_id":"sha256:b65d6a136bb3e2dc8c2448af6e359e2d72917ed2d0a33a5887da88b3cdf61576","target":"graph","created_at":"2026-07-05T09:20:44Z","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/2406.17598/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We introduce an improved method for decomposing the emission of active galactic nuclei (AGN) and their host galaxies using templates from principal component analysis (PCA). This approach integrates prior information from PCA with a penalized pixel fitting mechanism which improves the precision and effectiveness of the decomposition process. Specifically, we have reduced the degeneracy and over-fitting in AGN-host decomposition, particularly for those with low signal-to-noise ratios (SNR), where traditional methods tend to fail. By applying our method to 76,565 SDSS Data Release 16 quasars wit","authors_text":"Colin J. Burke, Hengxiao Guo, John D. Silverman, Junxian Wang, Shu Wang, Wenke Ren, Yue Shen","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2024-06-25T14:41:06Z","title":"Prior-Informed AGN-Host Spectral Decomposition Using PyQSOFit"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2406.17598","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:cac3c64c24f8d8f63b05f14d10143a8260bbdcdfac4a6faffb66a883a957a034","target":"record","created_at":"2026-07-05T09:20:44Z","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":"ca55a39f027d2511064d9425b19b38252a5a45259d11326eabf9c982b9ea000f","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2024-06-25T14:41:06Z","title_canon_sha256":"0504613713e20590a72ce73cf6262a9a683425f680171a7c016678108c517a41"},"schema_version":"1.0","source":{"id":"2406.17598","kind":"arxiv","version":2}},"canonical_sha256":"5b3c95431ab80b3f4a047eeef16503e526afa9b5acec764c7bb006eaba5191e4","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"5b3c95431ab80b3f4a047eeef16503e526afa9b5acec764c7bb006eaba5191e4","first_computed_at":"2026-07-05T09:20:44.668804Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T09:20:44.668804Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Smb3oJta1H+jeEcnMlYizM19aWNO19+m+9hcikbYFbgBbixegMSx0hAHP4ZqfEaEgtzdot4kSMGdj9MAhbmtAw==","signature_status":"signed_v1","signed_at":"2026-07-05T09:20:44.669185Z","signed_message":"canonical_sha256_bytes"},"source_id":"2406.17598","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:cac3c64c24f8d8f63b05f14d10143a8260bbdcdfac4a6faffb66a883a957a034","sha256:b65d6a136bb3e2dc8c2448af6e359e2d72917ed2d0a33a5887da88b3cdf61576"],"state_sha256":"564fb0dc3ab109e0f68fa7f471c21da1b355132135f1bc2344d9ddb5631e31d7"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"4DmaI10tx57dwEpmXLjJ3IkYeKBB7TZSexodSC/4EaAfSvkBzCqqbRM+0Qja2JEz6CDSm77sFz28Qno/FJdEBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-05T02:09:44.616919Z","bundle_sha256":"291542a1da518d129eeff50df3202aeadde84ff86f70eee072db6a9040b5e4c9"}}