{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:ZXLMHVK53TCL3ZTJSFPDGX55JO","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":"17a107c200359097798230e1427d4dca91204a5578f7b15d27ed81fa9307c6a9","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2015-08-06T19:37:02Z","title_canon_sha256":"cb5ad917a5a0a9741d30ce393921e8c465ff5a4c5925fb6869ebed48ecf4f50a"},"schema_version":"1.0","source":{"id":"1508.01505","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1508.01505","created_at":"2026-05-18T01:32:59Z"},{"alias_kind":"arxiv_version","alias_value":"1508.01505v1","created_at":"2026-05-18T01:32:59Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1508.01505","created_at":"2026-05-18T01:32:59Z"},{"alias_kind":"pith_short_12","alias_value":"ZXLMHVK53TCL","created_at":"2026-05-18T12:29:52Z"},{"alias_kind":"pith_short_16","alias_value":"ZXLMHVK53TCL3ZTJ","created_at":"2026-05-18T12:29:52Z"},{"alias_kind":"pith_short_8","alias_value":"ZXLMHVK5","created_at":"2026-05-18T12:29:52Z"}],"graph_snapshots":[{"event_id":"sha256:afa18d4f02131a00d33e3d561feef24c7da2435bbbb632ad69f1a2fec3a04f50","target":"graph","created_at":"2026-05-18T01:32:59Z","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 a dynamical analysis of the merging galaxy cluster system Abell 2146 using spectroscopy obtained with the Gemini Multi-Object Spectrograph on the Gemini North telescope. As revealed by the Chandra X-ray Observatory, the system is undergoing a major merger and has a gas structure indicative of a recent first core passage. The system presents two large shock fronts, making it unique amongst these rare systems. The hot gas structure indicates that the merger axis must be close to the plane of the sky and that the two merging clusters are relatively close in mass, from the observation o","authors_text":"A. C. Edge, A. C. Fabian, B. E. Lee, B. R. McNamara, C. P. ODea, D. I. Clowe, H. R. Russell, J. A. White, J. E. Coleman, J. S. Sanders, L. J. King, M. Donahue, R. E. A. Canning, R. M. Johnstone, S. A Baum","cross_cats":["astro-ph.GA"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2015-08-06T19:37:02Z","title":"Dynamical analysis of galaxy cluster merger Abell 2146"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1508.01505","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":"sha256:356063010d125cf89e5bbb8fa0b3a0e6edcb41c595ff56f6bc12e0b81fc714f6","target":"record","created_at":"2026-05-18T01:32:59Z","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":"17a107c200359097798230e1427d4dca91204a5578f7b15d27ed81fa9307c6a9","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2015-08-06T19:37:02Z","title_canon_sha256":"cb5ad917a5a0a9741d30ce393921e8c465ff5a4c5925fb6869ebed48ecf4f50a"},"schema_version":"1.0","source":{"id":"1508.01505","kind":"arxiv","version":1}},"canonical_sha256":"cdd6c3d55ddcc4bde669915e335fbd4b95854cbfcc5ab7ea4e82bf0634c2fece","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"cdd6c3d55ddcc4bde669915e335fbd4b95854cbfcc5ab7ea4e82bf0634c2fece","first_computed_at":"2026-05-18T01:32:59.394803Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:32:59.394803Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"SbTSmjJava/55D6atjbP8axbnj77aYPcRB9bXZlOCNJHkEBoMEXuBv6lykNXHSF36xzoeva67dhRw/6saf/tCg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:32:59.395266Z","signed_message":"canonical_sha256_bytes"},"source_id":"1508.01505","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:356063010d125cf89e5bbb8fa0b3a0e6edcb41c595ff56f6bc12e0b81fc714f6","sha256:afa18d4f02131a00d33e3d561feef24c7da2435bbbb632ad69f1a2fec3a04f50"],"state_sha256":"6b91ccb81b492f14671eeda5271c2fc877dd08de04401ce64f3c0befe493191b"}