{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:CTTU7IFB27BHW4ZD32YSLL5AQF","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":"47ead354929af61cdc9f3f752252ef2590a7efbe0a3e98d16c3c009bba940ec8","cross_cats_sorted":["astro-ph.CO","astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2014-08-15T16:08:39Z","title_canon_sha256":"cfbce8393699d19e7ceed8a3d7451b9ad2ba59c0481dde52cac8d6954ef1f8ff"},"schema_version":"1.0","source":{"id":"1408.3578","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1408.3578","created_at":"2026-05-18T01:42:18Z"},{"alias_kind":"arxiv_version","alias_value":"1408.3578v2","created_at":"2026-05-18T01:42:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1408.3578","created_at":"2026-05-18T01:42:18Z"},{"alias_kind":"pith_short_12","alias_value":"CTTU7IFB27BH","created_at":"2026-05-18T12:28:22Z"},{"alias_kind":"pith_short_16","alias_value":"CTTU7IFB27BHW4ZD","created_at":"2026-05-18T12:28:22Z"},{"alias_kind":"pith_short_8","alias_value":"CTTU7IFB","created_at":"2026-05-18T12:28:22Z"}],"graph_snapshots":[{"event_id":"sha256:6ed098bced284962dbf8c9dafd8f4bdaae3bb711fa013e3acdbcba020c74ec69","target":"graph","created_at":"2026-05-18T01:42:18Z","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 present the largest, publicly available, sample of Damped Lyman-$\\alpha$ systems (DLAs) along Gamma-ray Bursts (GRB) line of sights in order to investigate the environmental properties of long GRBs in the $z=1.8-6$ redshift range. Compared with the most recent quasar DLAs sample (QSO-DLA), our analysis shows that GRB-DLAs probe a more metal enriched environment at $z\\gtrsim3$, up to $[X/H]\\sim-0.5$. In the $z=2-3$ redshift range, despite the large number of lower limits, there are hints that the two populations may be more similar (only at 90\\% significance level). Also at \\hiz, the GRB-DLA","authors_text":"A. Cucchiara, D. Kocevski, G.D. Becker, J. X. Prochaska, M. Fumagalli, M. Rafelski, R.J. Cooke","cross_cats":["astro-ph.CO","astro-ph.HE"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2014-08-15T16:08:39Z","title":"Unveiling the Secrets of Metallicity and Massive Star Formation Using DLAs along Gamma-ray Bursts"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1408.3578","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:a6fb5ed21e264b6ff68d83bd42a6eb82a92e8a13de2355b48bf84cce423a2bc0","target":"record","created_at":"2026-05-18T01:42:18Z","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":"47ead354929af61cdc9f3f752252ef2590a7efbe0a3e98d16c3c009bba940ec8","cross_cats_sorted":["astro-ph.CO","astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2014-08-15T16:08:39Z","title_canon_sha256":"cfbce8393699d19e7ceed8a3d7451b9ad2ba59c0481dde52cac8d6954ef1f8ff"},"schema_version":"1.0","source":{"id":"1408.3578","kind":"arxiv","version":2}},"canonical_sha256":"14e74fa0a1d7c27b7323deb125afa081647389a2c72709efdc7413356a6ebf9f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"14e74fa0a1d7c27b7323deb125afa081647389a2c72709efdc7413356a6ebf9f","first_computed_at":"2026-05-18T01:42:18.567939Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:42:18.567939Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"AJya75bEhMo8hgoybzC+9WQCQ0nZ7Hx4vEC4+ajF0zBSdRWF0YOZlvqA7jJxUGbpuWqmpiQoelgpIcRxC3ctBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:42:18.568486Z","signed_message":"canonical_sha256_bytes"},"source_id":"1408.3578","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a6fb5ed21e264b6ff68d83bd42a6eb82a92e8a13de2355b48bf84cce423a2bc0","sha256:6ed098bced284962dbf8c9dafd8f4bdaae3bb711fa013e3acdbcba020c74ec69"],"state_sha256":"c3dee0abd3021f2f81291b260eea6d65c915392014869ef9cca943843e918a4f"}