{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2016:5KV3XZ2QQ7YQMGRISQTUXFMAQ3","short_pith_number":"pith:5KV3XZ2Q","schema_version":"1.0","canonical_sha256":"eaabbbe75087f1061a2894274b958086ec73bb39cc6abc7c14c117988c52c328","source":{"kind":"arxiv","id":"1607.04299","version":2},"attestation_state":"computed","paper":{"title":"Extracting Information from AGN Variability","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.HE"],"primary_cat":"astro-ph.GA","authors_text":"Gordon T. Richards, Michael S. Vogeley, Vishal P. Kasliwal","submitted_at":"2016-07-14T20:11:05Z","abstract_excerpt":"AGN exhibit rapid, high amplitude stochastic flux variations across the entire electromagnetic spectrum on timescales ranging from hours to years. The cause of this variability is poorly understood. We present a Green's Function-based method for using variability to (1) measure the time-scales on which flux perturbations evolve and (2) characterize the driving flux perturbations. We model the observed light curve of an AGN as a linear differential equation driven by stochastic impulses. We analyze the light curve of the Kepler AGN Zw 229-15 and find that the observed variability behavior can b"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1607.04299","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-07-14T20:11:05Z","cross_cats_sorted":["astro-ph.HE"],"title_canon_sha256":"e361160bef856f4f99ff2b1304b215f8175711d40b61bd86ef8a164b5da691a3","abstract_canon_sha256":"9d9605564dc4a65487d4a5e354370e62c924e9d61da6d9a1cc119dd0fecc0321"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:39:40.350606Z","signature_b64":"Omvk74xo+ZeZ6LD9yx97D7FuhvDs10ScPHzdKDGks9zm7TpjZxNPQhwf6sC/HrDkRaJ9Rio3YSuJYw69NEeGDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"eaabbbe75087f1061a2894274b958086ec73bb39cc6abc7c14c117988c52c328","last_reissued_at":"2026-05-18T00:39:40.349877Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:39:40.349877Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Extracting Information from AGN Variability","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.HE"],"primary_cat":"astro-ph.GA","authors_text":"Gordon T. Richards, Michael S. Vogeley, Vishal P. Kasliwal","submitted_at":"2016-07-14T20:11:05Z","abstract_excerpt":"AGN exhibit rapid, high amplitude stochastic flux variations across the entire electromagnetic spectrum on timescales ranging from hours to years. The cause of this variability is poorly understood. We present a Green's Function-based method for using variability to (1) measure the time-scales on which flux perturbations evolve and (2) characterize the driving flux perturbations. We model the observed light curve of an AGN as a linear differential equation driven by stochastic impulses. We analyze the light curve of the Kepler AGN Zw 229-15 and find that the observed variability behavior can b"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1607.04299","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":""},"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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1607.04299","created_at":"2026-05-18T00:39:40.350003+00:00"},{"alias_kind":"arxiv_version","alias_value":"1607.04299v2","created_at":"2026-05-18T00:39:40.350003+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1607.04299","created_at":"2026-05-18T00:39:40.350003+00:00"},{"alias_kind":"pith_short_12","alias_value":"5KV3XZ2QQ7YQ","created_at":"2026-05-18T12:30:01.593930+00:00"},{"alias_kind":"pith_short_16","alias_value":"5KV3XZ2QQ7YQMGRI","created_at":"2026-05-18T12:30:01.593930+00:00"},{"alias_kind":"pith_short_8","alias_value":"5KV3XZ2Q","created_at":"2026-05-18T12:30:01.593930+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/5KV3XZ2QQ7YQMGRISQTUXFMAQ3","json":"https://pith.science/pith/5KV3XZ2QQ7YQMGRISQTUXFMAQ3.json","graph_json":"https://pith.science/api/pith-number/5KV3XZ2QQ7YQMGRISQTUXFMAQ3/graph.json","events_json":"https://pith.science/api/pith-number/5KV3XZ2QQ7YQMGRISQTUXFMAQ3/events.json","paper":"https://pith.science/paper/5KV3XZ2Q"},"agent_actions":{"view_html":"https://pith.science/pith/5KV3XZ2QQ7YQMGRISQTUXFMAQ3","download_json":"https://pith.science/pith/5KV3XZ2QQ7YQMGRISQTUXFMAQ3.json","view_paper":"https://pith.science/paper/5KV3XZ2Q","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1607.04299&json=true","fetch_graph":"https://pith.science/api/pith-number/5KV3XZ2QQ7YQMGRISQTUXFMAQ3/graph.json","fetch_events":"https://pith.science/api/pith-number/5KV3XZ2QQ7YQMGRISQTUXFMAQ3/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/5KV3XZ2QQ7YQMGRISQTUXFMAQ3/action/timestamp_anchor","attest_storage":"https://pith.science/pith/5KV3XZ2QQ7YQMGRISQTUXFMAQ3/action/storage_attestation","attest_author":"https://pith.science/pith/5KV3XZ2QQ7YQMGRISQTUXFMAQ3/action/author_attestation","sign_citation":"https://pith.science/pith/5KV3XZ2QQ7YQMGRISQTUXFMAQ3/action/citation_signature","submit_replication":"https://pith.science/pith/5KV3XZ2QQ7YQMGRISQTUXFMAQ3/action/replication_record"}},"created_at":"2026-05-18T00:39:40.350003+00:00","updated_at":"2026-05-18T00:39:40.350003+00:00"}