{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:YYJUYLTQH7EQ4BXE7RNUDZIA6S","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":"730aab5124245f4a07d4d2ac383539f2e834d092b780548c2a6f0b925a1d0042","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2009-03-23T20:46:46Z","title_canon_sha256":"fbda45793f42d13114dec18ed3a3981064117ede3f05cbe1e1edfeda3ccf999a"},"schema_version":"1.0","source":{"id":"0903.3940","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0903.3940","created_at":"2026-05-18T04:29:15Z"},{"alias_kind":"arxiv_version","alias_value":"0903.3940v1","created_at":"2026-05-18T04:29:15Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0903.3940","created_at":"2026-05-18T04:29:15Z"},{"alias_kind":"pith_short_12","alias_value":"YYJUYLTQH7EQ","created_at":"2026-05-18T12:26:02Z"},{"alias_kind":"pith_short_16","alias_value":"YYJUYLTQH7EQ4BXE","created_at":"2026-05-18T12:26:02Z"},{"alias_kind":"pith_short_8","alias_value":"YYJUYLTQ","created_at":"2026-05-18T12:26:02Z"}],"graph_snapshots":[{"event_id":"sha256:477351cb46ec4350437449135393fd1005c4a4ac077afe47d161bf154b691b7c","target":"graph","created_at":"2026-05-18T04:29:15Z","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 associate the existence of short-lived compact radio sources with the intermittent activity of the central engine caused by a radiation pressure instability within an accretion disk. Such objects may constitute a numerous sub-class of Giga-Hertz Peaked Spectrum sources, in accordance with the population studies of radio-loud active galaxies, as well as detailed investigations of their radio morphologies. We perform the model computations assuming the viscosity parametrization as proportional to a geometrical mean of the total and gas pressure. The implied timescales are consistent with the ","authors_text":"3), Agnieszka Janiuk (1), Aneta Siemiginowska (2), Blazej Nikiel-Wroczynski (1, Bozena Czerny (1), Cambridge (3) Jagiellonian University, Cosmology, Cracow (4) Kavli Institute for Particle Astrophysics, Lukasz Stawarz (4) ((1) Copernicus Astronomical Center, Stanford University), Warsaw (2) Harvard-Smithsonian Center for Astrophysics","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2009-03-23T20:46:46Z","title":"Accretion Disk Model of Short-Timescale Intermittent Activity in Young Radio Sources"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0903.3940","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":"sha256:6475cee067935bbaff1ba5694a5385170c2b33309076bf5ea641eb89c7219332","target":"record","created_at":"2026-05-18T04:29:15Z","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":"730aab5124245f4a07d4d2ac383539f2e834d092b780548c2a6f0b925a1d0042","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2009-03-23T20:46:46Z","title_canon_sha256":"fbda45793f42d13114dec18ed3a3981064117ede3f05cbe1e1edfeda3ccf999a"},"schema_version":"1.0","source":{"id":"0903.3940","kind":"arxiv","version":1}},"canonical_sha256":"c6134c2e703fc90e06e4fc5b41e500f49fbb6173bab82bdc662fb4778ed3bea7","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c6134c2e703fc90e06e4fc5b41e500f49fbb6173bab82bdc662fb4778ed3bea7","first_computed_at":"2026-05-18T04:29:15.695045Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:29:15.695045Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"EGaxhCR8QLzYQuTMXCxkIYlNCmd45w9iEdG8IgoOrtsWyCN2og5beY+1GWJ0l+vZ5F3azxzeBvspyOjy8i8UBA==","signature_status":"signed_v1","signed_at":"2026-05-18T04:29:15.695703Z","signed_message":"canonical_sha256_bytes"},"source_id":"0903.3940","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:6475cee067935bbaff1ba5694a5385170c2b33309076bf5ea641eb89c7219332","sha256:477351cb46ec4350437449135393fd1005c4a4ac077afe47d161bf154b691b7c"],"state_sha256":"36d028777fcde51649dc3b5dc41c450fa6d007e429ccd9ef4c9b7f198fd15583"}