{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2004:BROL3W72ED52L7R4DZOGTTJLDF","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":"b78432b9ed7cf767948a9ada38ac976f7d589ec36f37ac8ca355a3763a300eca","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2004-08-10T22:42:58Z","title_canon_sha256":"4205bdce26f182e09254d58b2b309d494b3e61096a73c95c9699754b4d128e5d"},"schema_version":"1.0","source":{"id":"astro-ph/0408195","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0408195","created_at":"2026-07-04T16:44:28Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0408195v2","created_at":"2026-07-04T16:44:28Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0408195","created_at":"2026-07-04T16:44:28Z"},{"alias_kind":"pith_short_12","alias_value":"BROL3W72ED52","created_at":"2026-07-04T16:44:28Z"},{"alias_kind":"pith_short_16","alias_value":"BROL3W72ED52L7R4","created_at":"2026-07-04T16:44:28Z"},{"alias_kind":"pith_short_8","alias_value":"BROL3W72","created_at":"2026-07-04T16:44:28Z"}],"graph_snapshots":[{"event_id":"sha256:68bae766d720805b3233395f628c0f20b646a873315b340f3c684b9aaf51e6f8","target":"graph","created_at":"2026-07-04T16:44:28Z","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/astro-ph/0408195/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We examine the effect that the shape of the source brightness profile has on the magnitude fluctuations of images in quasar lens systems due to microlensing. We do this by convolving a variety of accretion disk models (including Gaussian disks, uniform disks, \"cones,\" and a Shakura-Sunyaev thermal model) with two magnification maps in the source plane, one with convergence kappa = 0.4 and shear gamma = 0.4 (positive parity), and the other with kappa = gamma = 0.6 (negative parity). By looking at magnification histograms of the convolutions and using chi-squared tests to determine the number of","authors_text":"(2) Universitat Potsdam), Joachim Wambsganss (2) ((1) Massachusetts Institute of Technology, Michael J. Mortonson (1), Paul L. Schechter (1)","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2004-08-10T22:42:58Z","title":"Size is Everything: Universal Features of Quasar Microlensing with Extended Sources"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0408195","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":"sha256:31556d21949072293447359c29ff60836b040d05ff90dd73c9a771add971cc10","target":"record","created_at":"2026-07-04T16:44:28Z","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":"b78432b9ed7cf767948a9ada38ac976f7d589ec36f37ac8ca355a3763a300eca","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2004-08-10T22:42:58Z","title_canon_sha256":"4205bdce26f182e09254d58b2b309d494b3e61096a73c95c9699754b4d128e5d"},"schema_version":"1.0","source":{"id":"astro-ph/0408195","kind":"arxiv","version":2}},"canonical_sha256":"0c5cbddbfa20fba5fe3c1e5c69cd2b195a5b8b1551ce915accd339fd91825354","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"0c5cbddbfa20fba5fe3c1e5c69cd2b195a5b8b1551ce915accd339fd91825354","first_computed_at":"2026-07-04T16:44:28.203580Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T16:44:28.203580Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"XmpBf02SuUI9Z7vW/X4umyiqovvFDbnYlY5xEXoXiVaLl92SypAtsjTPm18ZEKjiBJryDXaRzTknXmZCNr2/AQ==","signature_status":"signed_v1","signed_at":"2026-07-04T16:44:28.203953Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0408195","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:31556d21949072293447359c29ff60836b040d05ff90dd73c9a771add971cc10","sha256:68bae766d720805b3233395f628c0f20b646a873315b340f3c684b9aaf51e6f8"],"state_sha256":"d4cf3c4c9410bcc4c749429dc6e75a09e2f80aeecd7f791868a0526b31f863c1"}