{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:LZFVVQHZTC33Y33EHECDRTAWAW","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":"dffd936944d16ce313bc4cc1ef3e8ec6908ea6fbdd32c8d8bb166cc725b566fc","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-01-17T21:21:57Z","title_canon_sha256":"9b8c0f9c81d9b531225e0336b66868c96755b61d5180577ddd037ea77e8b0dc7"},"schema_version":"1.0","source":{"id":"1201.3636","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1201.3636","created_at":"2026-05-18T04:04:18Z"},{"alias_kind":"arxiv_version","alias_value":"1201.3636v1","created_at":"2026-05-18T04:04:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1201.3636","created_at":"2026-05-18T04:04:18Z"},{"alias_kind":"pith_short_12","alias_value":"LZFVVQHZTC33","created_at":"2026-05-18T12:27:14Z"},{"alias_kind":"pith_short_16","alias_value":"LZFVVQHZTC33Y33E","created_at":"2026-05-18T12:27:14Z"},{"alias_kind":"pith_short_8","alias_value":"LZFVVQHZ","created_at":"2026-05-18T12:27:14Z"}],"graph_snapshots":[{"event_id":"sha256:26a1d379a41623aae02896b63c0b8db7370369c917a25de3d5a2724cf97a7872","target":"graph","created_at":"2026-05-18T04:04:18Z","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 report a mass reconstruction of A1689 using Particle Based Lensing (PBL), a new technique for Strong+Weak lensing that allows a variable resolution depending on the data density and the signal-to-noise. Using PBL we also calculate the covariance matrix for the resulting mass map. The reconstruction of A1689 shows a secondary mass peak in the north-east direction confirming previous optical observations. This indicates that the central region of the cluster is still undergoing a weak merger. We have used this mass map to measure power ratios of the dark matter distribution and compared it to","authors_text":"Andrea Morandi, David M. Goldberg, Hakon Dahle, Kristian Pedersen, Sanghamitra Deb, Signe Riemer-Sorensen","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-01-17T21:21:57Z","title":"Mass Reconstruction using Particle Based Lensing II: Quantifying substructure with Strong+Weak lensing and X-rays"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1201.3636","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":"sha256:862a9f576059bd81af6c8a7f15cc94a8fd49cda589cca2bbdee5a568093c0c27","target":"record","created_at":"2026-05-18T04:04:18Z","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":"dffd936944d16ce313bc4cc1ef3e8ec6908ea6fbdd32c8d8bb166cc725b566fc","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-01-17T21:21:57Z","title_canon_sha256":"9b8c0f9c81d9b531225e0336b66868c96755b61d5180577ddd037ea77e8b0dc7"},"schema_version":"1.0","source":{"id":"1201.3636","kind":"arxiv","version":1}},"canonical_sha256":"5e4b5ac0f998b7bc6f64390438cc1605a4438f356b9c7c42336077cf41afb169","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"5e4b5ac0f998b7bc6f64390438cc1605a4438f356b9c7c42336077cf41afb169","first_computed_at":"2026-05-18T04:04:18.398884Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:04:18.398884Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"+TWTWvQv0fbb2JrleUZSR+Yr+PQwDWwszSXtwJ8hDJjp8EPsPe2EOW51ar5LH8hX/PNqnXVj3L2vaf7Z9nkMBw==","signature_status":"signed_v1","signed_at":"2026-05-18T04:04:18.399553Z","signed_message":"canonical_sha256_bytes"},"source_id":"1201.3636","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:862a9f576059bd81af6c8a7f15cc94a8fd49cda589cca2bbdee5a568093c0c27","sha256:26a1d379a41623aae02896b63c0b8db7370369c917a25de3d5a2724cf97a7872"],"state_sha256":"3bbd25e600a5afc9a7fce61fdbd56320fdac8f5e30380c99312129c4e669a97c"}