{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:XMQ52BNUIIL46TQWYEWE7LZREL","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":"8a7a08a42feda4b40b982fb1944092c3d5e70917f6e227bd20f6087ddecfca39","cross_cats_sorted":["astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-07-06T12:42:05Z","title_canon_sha256":"8508701ac82b55ff475037720af3f874449ab35bbc847e530fb0aaea0130ab8f"},"schema_version":"1.0","source":{"id":"1807.02382","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1807.02382","created_at":"2026-05-18T00:02:44Z"},{"alias_kind":"arxiv_version","alias_value":"1807.02382v1","created_at":"2026-05-18T00:02:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1807.02382","created_at":"2026-05-18T00:02:44Z"},{"alias_kind":"pith_short_12","alias_value":"XMQ52BNUIIL4","created_at":"2026-05-18T12:33:01Z"},{"alias_kind":"pith_short_16","alias_value":"XMQ52BNUIIL46TQW","created_at":"2026-05-18T12:33:01Z"},{"alias_kind":"pith_short_8","alias_value":"XMQ52BNU","created_at":"2026-05-18T12:33:01Z"}],"graph_snapshots":[{"event_id":"sha256:b664dcb46b73117a769e356503763c755dcf990801087fa650daef85f23263aa","target":"graph","created_at":"2026-05-18T00:02:44Z","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":"Narrow line Seyfert 1 galaxies (NLSy1s) constitute the AGN subclass associated with systematically smaller black hole masses. A few radio loud ones have been detected in MeV -- GeV energy bands by Fermi and evidence for the presence of blazar-like jets has been accumulated. In this study we wish to quantify the temporal behaviour of the optical polarisation, fraction and angle, for a selected sample of radio loud NLSy1s. We also search for rotations of the polarisation plane similar to those commonly observed in blazars. We have conducted R-band optical polarisation monitoring of a sample of 1","authors_text":"D. Blinov, E. Angelakis, I. Myserlis, J. A. Zensus, J. Eggen, N. Marchili, R. Itoh, S. Kiehlmann","cross_cats":["astro-ph.HE"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-07-06T12:42:05Z","title":"Optical polarisation variability of radio loud narrow line Seyfert 1 galaxies. Search for long rotations of the polarisation plane"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1807.02382","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:a033832cf084d9fd3342ffa8650b1af90dc06f9a3bbe92b279a10d8e8e2afc46","target":"record","created_at":"2026-05-18T00:02:44Z","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":"8a7a08a42feda4b40b982fb1944092c3d5e70917f6e227bd20f6087ddecfca39","cross_cats_sorted":["astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-07-06T12:42:05Z","title_canon_sha256":"8508701ac82b55ff475037720af3f874449ab35bbc847e530fb0aaea0130ab8f"},"schema_version":"1.0","source":{"id":"1807.02382","kind":"arxiv","version":1}},"canonical_sha256":"bb21dd05b44217cf4e16c12c4faf3122eff597a7cd311a2285a273c095dd96d7","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"bb21dd05b44217cf4e16c12c4faf3122eff597a7cd311a2285a273c095dd96d7","first_computed_at":"2026-05-18T00:02:44.593535Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:02:44.593535Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"SNnKs+dHHFoczIInGYluFwI5P+i4I9+dY26ZJJz4gEJIWuM3X7RPRyBrnSkDAiUCBub8Xdlci1K38TCp9bhdDg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:02:44.594117Z","signed_message":"canonical_sha256_bytes"},"source_id":"1807.02382","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a033832cf084d9fd3342ffa8650b1af90dc06f9a3bbe92b279a10d8e8e2afc46","sha256:b664dcb46b73117a769e356503763c755dcf990801087fa650daef85f23263aa"],"state_sha256":"ce9f07ca018c207e577384b666a20cf242831619deeb2564842db07d30198cc0"}