{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:S7WPCXBJGKYXUEJROVEYK65ENM","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":"2e4de52c2388066ce2286cec4c3199ba51f83f5c1fa89824000feb4659d3f13d","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2022-10-29T11:04:59Z","title_canon_sha256":"ec3a9ede72bb90969f897882431665ae2e40563cb0c1b1700f566bdfc2fed692"},"schema_version":"1.0","source":{"id":"2210.16570","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2210.16570","created_at":"2026-07-05T05:26:54Z"},{"alias_kind":"arxiv_version","alias_value":"2210.16570v1","created_at":"2026-07-05T05:26:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2210.16570","created_at":"2026-07-05T05:26:54Z"},{"alias_kind":"pith_short_12","alias_value":"S7WPCXBJGKYX","created_at":"2026-07-05T05:26:54Z"},{"alias_kind":"pith_short_16","alias_value":"S7WPCXBJGKYXUEJR","created_at":"2026-07-05T05:26:54Z"},{"alias_kind":"pith_short_8","alias_value":"S7WPCXBJ","created_at":"2026-07-05T05:26:54Z"}],"graph_snapshots":[{"event_id":"sha256:c95cb2370b80056c79d078b7ee4f1c8db4a0efa6f63e894afb137e7df1221980","target":"graph","created_at":"2026-07-05T05:26:54Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2210.16570/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We present a sample of 373 peaked-spectrum (PS) sources with spectral peaks around 150MHz, selected using a subset of two LOFAR all-sky surveys, the LOFAR Two Meter Sky Survey and the LOFAR LBA Sky Survey. These surveys are the most sensitive low-frequency widefield surveys to date, allowing us to select low-luminosity PS sources. Our sample increases the number of known PS sources in our survey area by a factor 50. The 5GHz luminosity distribution of our PS sample shows we sample the lowest luminosity PS sources to-date by nearly an order of magnitude. Since high-frequency PS sources and comp","authors_text":"F. De Gasperin, G. K. Miley, H. J. A. R\\\"ottgering, J. R. Callingham, K. J. Duncan, M. J. Hardcastle, M. M. Slob, W. L. Williams","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2022-10-29T11:04:59Z","title":"Extragalactic Peaked-Spectrum Radio Sources at Low-Frequencies are Young Radio Galaxies"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2210.16570","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":"sha256:3e240de298b78623f15903c2b9c02120b017a146cc5b185839430c1933279298","target":"record","created_at":"2026-07-05T05:26:54Z","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":"2e4de52c2388066ce2286cec4c3199ba51f83f5c1fa89824000feb4659d3f13d","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2022-10-29T11:04:59Z","title_canon_sha256":"ec3a9ede72bb90969f897882431665ae2e40563cb0c1b1700f566bdfc2fed692"},"schema_version":"1.0","source":{"id":"2210.16570","kind":"arxiv","version":1}},"canonical_sha256":"97ecf15c2932b17a11317549857ba46b0aacc8f773771fc8f83affded659860d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"97ecf15c2932b17a11317549857ba46b0aacc8f773771fc8f83affded659860d","first_computed_at":"2026-07-05T05:26:54.910825Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T05:26:54.910825Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"mVfgRQq6mQkv2lqgOD7sxzW3xNXib2nAHTyQ830XKOYMwpXAhlxiFnALVtlNQH8BO72ih8MnopVpVMTm39U4AA==","signature_status":"signed_v1","signed_at":"2026-07-05T05:26:54.911306Z","signed_message":"canonical_sha256_bytes"},"source_id":"2210.16570","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3e240de298b78623f15903c2b9c02120b017a146cc5b185839430c1933279298","sha256:c95cb2370b80056c79d078b7ee4f1c8db4a0efa6f63e894afb137e7df1221980"],"state_sha256":"dd43ecced398a62f30edf2074e4e88d035a4644f8e592346e926bad46df3769c"}