{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:N2YUU3GP4EXIWPZPYYPP3ISIFX","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":"14b594eec052eeb8005aea51de591128a509c719006bb655f959f8a50f02d179","cross_cats_sorted":["astro-ph.EP"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2009-11-12T20:55:53Z","title_canon_sha256":"d9dc9845c68d20d65c1367fb6632acacbc05551b59bb6c51ea2f86950ce8cdc2"},"schema_version":"1.0","source":{"id":"0911.2465","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0911.2465","created_at":"2026-05-18T02:10:48Z"},{"alias_kind":"arxiv_version","alias_value":"0911.2465v1","created_at":"2026-05-18T02:10:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0911.2465","created_at":"2026-05-18T02:10:48Z"},{"alias_kind":"pith_short_12","alias_value":"N2YUU3GP4EXI","created_at":"2026-05-18T12:26:00Z"},{"alias_kind":"pith_short_16","alias_value":"N2YUU3GP4EXIWPZP","created_at":"2026-05-18T12:26:00Z"},{"alias_kind":"pith_short_8","alias_value":"N2YUU3GP","created_at":"2026-05-18T12:26:00Z"}],"graph_snapshots":[{"event_id":"sha256:dd082f4d8858b02dbe85c169fe2f310af4c5646ef6d54761c4e6f8d4b35e85ad","target":"graph","created_at":"2026-05-18T02:10:48Z","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":"Direct detection of exoplanets requires high dynamic range imaging. Coronagraphs could be the solution, but their performance in space is limited by wavefront errors (manufacturing errors on optics, temperature variations, etc.), which create quasi-static stellar speckles in the final image. Several solutions have been suggested for tackling this speckle noise. Differential imaging techniques substract a reference image to the coronagraphic residue in a post-processing imaging. Other techniques attempt to actively correct wavefront errors using a deformable mirror. In that case, wavefront aber","authors_text":"Gerard Rousset, Julien Totems, Marion Mas, Pierre Baudoz, Raphael Galicher","cross_cats":["astro-ph.EP"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2009-11-12T20:55:53Z","title":"Self-coherent camera as a focal plane wavefront sensor: simulations"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0911.2465","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":"sha256:5091f17957d0b1ea154ff843319fbc0d5c0cd2b675cc499f9eae84be16eb85ba","target":"record","created_at":"2026-05-18T02:10:48Z","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":"14b594eec052eeb8005aea51de591128a509c719006bb655f959f8a50f02d179","cross_cats_sorted":["astro-ph.EP"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2009-11-12T20:55:53Z","title_canon_sha256":"d9dc9845c68d20d65c1367fb6632acacbc05551b59bb6c51ea2f86950ce8cdc2"},"schema_version":"1.0","source":{"id":"0911.2465","kind":"arxiv","version":1}},"canonical_sha256":"6eb14a6ccfe12e8b3f2fc61efda2482df46cc2b71da02d680f8981491d1ae7bb","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6eb14a6ccfe12e8b3f2fc61efda2482df46cc2b71da02d680f8981491d1ae7bb","first_computed_at":"2026-05-18T02:10:48.169837Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:10:48.169837Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"NoaEUaS5F+1q2CWC7XDAqnSwRSZP1SAy9S1pvAizFkNL8uq/g3sqNrHXsUcVRlo+fsrAf6CrkNUj5eeC6JqVBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T02:10:48.170539Z","signed_message":"canonical_sha256_bytes"},"source_id":"0911.2465","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5091f17957d0b1ea154ff843319fbc0d5c0cd2b675cc499f9eae84be16eb85ba","sha256:dd082f4d8858b02dbe85c169fe2f310af4c5646ef6d54761c4e6f8d4b35e85ad"],"state_sha256":"1cec299648ec5d741712dc1474a7d6d3f412d044eb1b545b8abaf9258f0079fb"}