{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:GUROLPSNBIZGQ4DK7JBMBJWQ7J","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":"33301159e5e0b851a44865c8eccf944d809063cbd7f15f1c32b8751b04f20928","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2015-03-27T20:50:58Z","title_canon_sha256":"3bce53e4edec20605815125dc6c1eec8971b3facc1dcaec90e605c370c752817"},"schema_version":"1.0","source":{"id":"1503.08226","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1503.08226","created_at":"2026-05-18T01:36:54Z"},{"alias_kind":"arxiv_version","alias_value":"1503.08226v2","created_at":"2026-05-18T01:36:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1503.08226","created_at":"2026-05-18T01:36:54Z"},{"alias_kind":"pith_short_12","alias_value":"GUROLPSNBIZG","created_at":"2026-05-18T12:29:22Z"},{"alias_kind":"pith_short_16","alias_value":"GUROLPSNBIZGQ4DK","created_at":"2026-05-18T12:29:22Z"},{"alias_kind":"pith_short_8","alias_value":"GUROLPSN","created_at":"2026-05-18T12:29:22Z"}],"graph_snapshots":[{"event_id":"sha256:ad06ff06aaa38771bf3130dbafc9996aab327b2ad4d0070f848e3ed983725302","target":"graph","created_at":"2026-05-18T01:36:54Z","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"},"paper":{"abstract_excerpt":"We report the discovery of gamma-ray emission from the narrow-line Seyfert 1 (NLSy1) galaxy FBQS J1644+2619 by the Large Area Telescope on board the Fermi satellite. The Third Fermi LAT Source catalogue reports an unidentified gamma-ray source, detected over the first four years of Fermi operation, 0.23 deg from the radio position of the NLSy1. Analysing 76 months of gamma-ray data (2008 August 4 - 2014 December 31) we are able to better constrain the localization of the gamma-ray source. The new position of the gamma-ray source is 0.05 deg from FBQS J1644+2619, suggesting a spatial associatio","authors_text":"Dep. of Physics, F. D'Ammando (DIFA - University of Bologna, INAF-IRA Bologna), J. Larsson (KTH, M. Giroletti (INAF-IRA Bologna), M. Orienti (INAF-IRA Bologna), the Oskar Klein Centre)","cross_cats":["astro-ph.CO"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2015-03-27T20:50:58Z","title":"The first gamma-ray detection of the narrow-line Seyfert 1 FBQS J1644+2619"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1503.08226","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:ea27c8b2ab3c66a8b220d170762544e9de072105a0e8988d7ab1bfe03ddf11e5","target":"record","created_at":"2026-05-18T01:36:54Z","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":"33301159e5e0b851a44865c8eccf944d809063cbd7f15f1c32b8751b04f20928","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2015-03-27T20:50:58Z","title_canon_sha256":"3bce53e4edec20605815125dc6c1eec8971b3facc1dcaec90e605c370c752817"},"schema_version":"1.0","source":{"id":"1503.08226","kind":"arxiv","version":2}},"canonical_sha256":"3522e5be4d0a3268706afa42c0a6d0fa7fc3bf109c1934e478261a495c988895","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3522e5be4d0a3268706afa42c0a6d0fa7fc3bf109c1934e478261a495c988895","first_computed_at":"2026-05-18T01:36:54.039258Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:36:54.039258Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"xYvM6mTgFIkmohm//UkKkLcFysegx+sRnnSnIUvwqKjdUr3/E9ROknf4Be6pyw8UFXMN3xbl/VVE/Voqjlc/CA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:36:54.039896Z","signed_message":"canonical_sha256_bytes"},"source_id":"1503.08226","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ea27c8b2ab3c66a8b220d170762544e9de072105a0e8988d7ab1bfe03ddf11e5","sha256:ad06ff06aaa38771bf3130dbafc9996aab327b2ad4d0070f848e3ed983725302"],"state_sha256":"9e0536758789d3d3ec485f750950b23e447f0dcbee51fb64b7e95cfeb33573d7"}