{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:MZ7HGCAL226FXBEAMABXPK4YJ6","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":"c9236e96a8ac3d0ce2b3ea53bc74a9b4dc055725e670e459ac06e2c3bd9d8b68","cross_cats_sorted":["astro-ph.IM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-02-15T15:08:10Z","title_canon_sha256":"8b9034e77d47cf4a8f9f62dfc06824cde39ff3cb37bd05b36d105a8da26eeb5b"},"schema_version":"1.0","source":{"id":"1702.04643","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1702.04643","created_at":"2026-05-18T00:50:41Z"},{"alias_kind":"arxiv_version","alias_value":"1702.04643v1","created_at":"2026-05-18T00:50:41Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1702.04643","created_at":"2026-05-18T00:50:41Z"},{"alias_kind":"pith_short_12","alias_value":"MZ7HGCAL226F","created_at":"2026-05-18T12:31:31Z"},{"alias_kind":"pith_short_16","alias_value":"MZ7HGCAL226FXBEA","created_at":"2026-05-18T12:31:31Z"},{"alias_kind":"pith_short_8","alias_value":"MZ7HGCAL","created_at":"2026-05-18T12:31:31Z"}],"graph_snapshots":[{"event_id":"sha256:35357270c7418e804625bc91daf4acd639b250833bb2c38a55927c941aead161","target":"graph","created_at":"2026-05-18T00:50:41Z","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 present the results of a study of different statistical methods currently used in the literature to analyse the (micro)variability of active galactic nuclei (AGNs) from ground-based optical observations. In particular, we focus on the comparison between the results obtained by applying the so-called C and F statistics, which are based on the ratio of standard deviations and variances, respectively. The motivation for this is that the implementation of these methods leads to different and contradictory results, making the variability classification of the light curves of a certain source dep","authors_text":"D.D. Carpintero, G.E. Romero, I. Andruchow, J.A. Combi, L. Zibecchi, S.A. Cellone","cross_cats":["astro-ph.IM"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-02-15T15:08:10Z","title":"Microvariability in AGNs: study of different statistical methods - I. Observational analysis"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1702.04643","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":"sha256:5136093a81e04739b22ea6728376e3cab62b41595c402dd8218b31c71e0e3848","target":"record","created_at":"2026-05-18T00:50:41Z","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":"c9236e96a8ac3d0ce2b3ea53bc74a9b4dc055725e670e459ac06e2c3bd9d8b68","cross_cats_sorted":["astro-ph.IM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-02-15T15:08:10Z","title_canon_sha256":"8b9034e77d47cf4a8f9f62dfc06824cde39ff3cb37bd05b36d105a8da26eeb5b"},"schema_version":"1.0","source":{"id":"1702.04643","kind":"arxiv","version":1}},"canonical_sha256":"667e73080bd6bc5b8480600377ab984f905b7f053e962ce429b5c0b27d71229c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"667e73080bd6bc5b8480600377ab984f905b7f053e962ce429b5c0b27d71229c","first_computed_at":"2026-05-18T00:50:41.062186Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:50:41.062186Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"IqfQ/a3seAm4gzslew8Moni/oLoL4NHm9o0IoH5XjEecjSMMHqpaKAenvGP/Lh3ikGT939hNJw+wWVqm8qO+AQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:50:41.062796Z","signed_message":"canonical_sha256_bytes"},"source_id":"1702.04643","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5136093a81e04739b22ea6728376e3cab62b41595c402dd8218b31c71e0e3848","sha256:35357270c7418e804625bc91daf4acd639b250833bb2c38a55927c941aead161"],"state_sha256":"57b853578a172fe5c6d60c71a8def4844be66332609bccfd1b93e2a270ed3fe4"}