{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:BRECTMRUDRBSLS2JRZSDSVBAFL","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":"f417ca0f5bc19f5769e65385286f018d856d655c40c5d1af4ee18af7be6d7162","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-04-25T16:54:26Z","title_canon_sha256":"e1c5f7862379ef32f7aea91f2086376696889754598100c7bb79609489693fea"},"schema_version":"1.0","source":{"id":"1704.07783","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1704.07783","created_at":"2026-05-18T00:00:22Z"},{"alias_kind":"arxiv_version","alias_value":"1704.07783v2","created_at":"2026-05-18T00:00:22Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1704.07783","created_at":"2026-05-18T00:00:22Z"},{"alias_kind":"pith_short_12","alias_value":"BRECTMRUDRBS","created_at":"2026-05-18T12:31:08Z"},{"alias_kind":"pith_short_16","alias_value":"BRECTMRUDRBSLS2J","created_at":"2026-05-18T12:31:08Z"},{"alias_kind":"pith_short_8","alias_value":"BRECTMRU","created_at":"2026-05-18T12:31:08Z"}],"graph_snapshots":[{"event_id":"sha256:5934e914f1911ecb45e6fe733fad3e0c83223fa1541134f21354d1c09d87be36","target":"graph","created_at":"2026-05-18T00:00:22Z","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 use two catalogues, a Herschel catalogue selected at 500 mu (HerMES) and an IRAS catalogue selected at 60 mu (RIFSCz), to contrast the sky at these two wavelengths.\n  Both surveys demonstrate the existence of extreme starbursts, with star-formation rates (SFRs) > 5000 Msun/yr. The maximum intrinsic star-formation rate appears to be ~30,000 Msun/yr. The sources with apparent SFR estimates higher than this are in all cases either lensed systems, blazars, or erroneous photometric redshifts.\n  At redshifts of 3 to 5, the time-scale for the Herschel galaxies to make their current mass of stars a","authors_text":"Carlotta Gruppioni (Osservatorio Astronomico di Bologna, David L. Clements (Imperial College London, Dimitra Rigopoulou (University of Oxford, Duncan Farrah (University of Hawaii, Italy), Lingyu Wang (SRON, Lucia Marchetti (University of Western Cape, Mattia Vaccari (University of Western Cape, Michael Rowan-Robinson (Imperial College London, Netherlands), South Africa), UK), USA)","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-04-25T16:54:26Z","title":"Extreme submillimetre starburst galaxies"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1704.07783","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":"sha256:34c1abb90bdd37b4c4cb250bf75a791bfce4b2676e9bfc847a3796a3dc0880be","target":"record","created_at":"2026-05-18T00:00:22Z","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":"f417ca0f5bc19f5769e65385286f018d856d655c40c5d1af4ee18af7be6d7162","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-04-25T16:54:26Z","title_canon_sha256":"e1c5f7862379ef32f7aea91f2086376696889754598100c7bb79609489693fea"},"schema_version":"1.0","source":{"id":"1704.07783","kind":"arxiv","version":2}},"canonical_sha256":"0c4829b2341c4325cb498e643954202ae551f86a20932bd5fd13cd0acabaf41c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"0c4829b2341c4325cb498e643954202ae551f86a20932bd5fd13cd0acabaf41c","first_computed_at":"2026-05-18T00:00:22.640992Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:00:22.640992Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"OULNy+11brCg1iXHF37VbIaQ3SHt3xeLnxBxM70En0s8dfHTZ+WP+wTXyYlW371xjtQPv5vZcNv83plE1ssTAg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:00:22.641549Z","signed_message":"canonical_sha256_bytes"},"source_id":"1704.07783","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:34c1abb90bdd37b4c4cb250bf75a791bfce4b2676e9bfc847a3796a3dc0880be","sha256:5934e914f1911ecb45e6fe733fad3e0c83223fa1541134f21354d1c09d87be36"],"state_sha256":"b930b55826d93366a137f45142bd8e7a14e4833e6285bc50c554128d531ce8cd"}