{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:4KFFFSLS27REP7JTHUFDQF6PCA","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":"f126c6638bfbbb3daad268857f70b7c8c949a047664cb1de60e6db270c9c8d9b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2009-11-04T09:55:21Z","title_canon_sha256":"8e05f6909f1d20f693b1ac544f825127994979b488fe45e73031f25212f1d1d3"},"schema_version":"1.0","source":{"id":"0911.0763","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0911.0763","created_at":"2026-05-18T04:42:02Z"},{"alias_kind":"arxiv_version","alias_value":"0911.0763v2","created_at":"2026-05-18T04:42:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0911.0763","created_at":"2026-05-18T04:42:02Z"},{"alias_kind":"pith_short_12","alias_value":"4KFFFSLS27RE","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_16","alias_value":"4KFFFSLS27REP7JT","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_8","alias_value":"4KFFFSLS","created_at":"2026-05-18T12:25:58Z"}],"graph_snapshots":[{"event_id":"sha256:cbeb5eb93b8f1e83144cacd7f5d0e2307079132b4e31d11fa38cdc1d25408517","target":"graph","created_at":"2026-05-18T04:42:02Z","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 examine deep XMM-Newton Reflection Grating Spectrometer (RGS) observations of the X-ray luminous galaxy cluster A1835. For the first time in a galaxy cluster we place direct limits on turbulent broadening of the emission lines. This is possible because the coolest X-ray emitting gas in the cluster, which is responsible for the lines, occupies a small region within the core. The most conservative determination of the 90 per cent upper limit on line-of-sight, non-thermal, velocity broadening is 274 km/s, measured from the emission lines originating within 30 kpc radius. The ratio of turbulent","authors_text":"(2) CfA, (3) Purdue), A.C. Fabian (1), Cambridge, J.R. Peterson (3) ((1) IoA, J.S. Sanders (1), R.K. Smith (2)","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2009-11-04T09:55:21Z","title":"A direct limit on the turbulent velocity of the intracluster medium in the core of Abell 1835 from XMM-Newton"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0911.0763","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":"sha256:7c7821cd0dab612443614ecb8bccc06ea76fd39879611190b16358c570da01a5","target":"record","created_at":"2026-05-18T04:42:02Z","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":"f126c6638bfbbb3daad268857f70b7c8c949a047664cb1de60e6db270c9c8d9b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2009-11-04T09:55:21Z","title_canon_sha256":"8e05f6909f1d20f693b1ac544f825127994979b488fe45e73031f25212f1d1d3"},"schema_version":"1.0","source":{"id":"0911.0763","kind":"arxiv","version":2}},"canonical_sha256":"e28a52c972d7e247fd333d0a3817cf10251601c9c3fd8039b3a3e9e297c785ec","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e28a52c972d7e247fd333d0a3817cf10251601c9c3fd8039b3a3e9e297c785ec","first_computed_at":"2026-05-18T04:42:02.679856Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:42:02.679856Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"j8ZLoptmZx42hpYecFbSw8m9TjpY71j87URBizcTHoe1xVAcv5ZRY+M6Gnx/ydQzytUoN8naf7pUfTPm3op0Cw==","signature_status":"signed_v1","signed_at":"2026-05-18T04:42:02.680267Z","signed_message":"canonical_sha256_bytes"},"source_id":"0911.0763","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:7c7821cd0dab612443614ecb8bccc06ea76fd39879611190b16358c570da01a5","sha256:cbeb5eb93b8f1e83144cacd7f5d0e2307079132b4e31d11fa38cdc1d25408517"],"state_sha256":"278582fa778a2df39777eeadc4c7d4a48282e5a2ad5be6ac9534e4dfc8071953"}