{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:5GFMIFNN4IN3X3DPTO3FAVTZBL","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":"2fc2b025336b075fff794166a9070352734e28fe6f076a23e04778d1d2917116","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2018-06-11T18:00:01Z","title_canon_sha256":"e47efdf9d2bd6f44af29a176337b87386e97f80a7182b074d02bb5618f6e7c03"},"schema_version":"1.0","source":{"id":"1806.04144","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1806.04144","created_at":"2026-05-18T00:07:06Z"},{"alias_kind":"arxiv_version","alias_value":"1806.04144v1","created_at":"2026-05-18T00:07:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1806.04144","created_at":"2026-05-18T00:07:06Z"},{"alias_kind":"pith_short_12","alias_value":"5GFMIFNN4IN3","created_at":"2026-05-18T12:32:08Z"},{"alias_kind":"pith_short_16","alias_value":"5GFMIFNN4IN3X3DP","created_at":"2026-05-18T12:32:08Z"},{"alias_kind":"pith_short_8","alias_value":"5GFMIFNN","created_at":"2026-05-18T12:32:08Z"}],"graph_snapshots":[{"event_id":"sha256:4b5b71ab7920a4a70a358c5c4bda19c0a6bf847a49a494e28dfc7fef12e38aa7","target":"graph","created_at":"2026-05-18T00:07:06Z","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":"HESS J1943+213 is a very-high-energy (VHE; $>$100 GeV) $\\gamma$-ray source in the direction of the Galactic Plane. Studies exploring the classification of the source are converging towards its identification as an extreme synchrotron BL Lac object. Here we present 38 hours of VERITAS observations of HESS J1943+213 taken over two years. The source is detected with $\\sim$20 standard deviations significance, showing a remarkably stable flux and spectrum in VHE $\\gamma$-rays. Multi-frequency very-long-baseline array (VLBA) observations of the source confirm the extended, jet-like structure previou","authors_text":"A. Falcone, A. Flinders, A. Furniss, A. N. Otte, A. Petrashyk, A. Popkow, A. Weinstein, A. Wilhelm, C. A. Johnson, C. Rulten, D. A. Williams, D. Hanna, D. Kieda, D. Nieto, E. Pueschel, E. Roache, F. Krennrich, G. H. Gillanders, G. H. Sembroski, G. Hughes, G. T. Richards, I. Sadeh, J. Holder, J. P. Finley, J. Quinn, J. Tyler, K. Ragan, K. Shahinyan, L. Fortson, M. Buchovecky, M. H\\\"utten, M. J. Lang, M. K. Daniel, M. Krause, M. Pohl, N. Kelley-Hoskins, N. Park, O. Hervet, O. M. Weiner, P. Kaaret, P. Kar, P. Moriarty, P. Pontrelli, P. T. Reynolds, P. Wilcox, Q. Feng, R. A. Ong, R. Bird, R. Brose, R. Mukherjee, R. M. Wells, S. Kumar, S. McArthur, S. O'Brien, S. P. Wakely, T. B. Humensky, The VERITAS Collaboration: A. Archer, T. T.Y. Lin, V. Bugaev, W. Benbow, W. Cui, W. F. Brisken","cross_cats":["astro-ph.CO"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2018-06-11T18:00:01Z","title":"HESS J1943+213: An Extreme Blazar Shining Through The Galactic Plane"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1806.04144","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":"sha256:67dbfc2281ca5a32d839e92a1c3a84dfe114c271db0f1a24c04b817099c33c14","target":"record","created_at":"2026-05-18T00:07:06Z","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":"2fc2b025336b075fff794166a9070352734e28fe6f076a23e04778d1d2917116","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2018-06-11T18:00:01Z","title_canon_sha256":"e47efdf9d2bd6f44af29a176337b87386e97f80a7182b074d02bb5618f6e7c03"},"schema_version":"1.0","source":{"id":"1806.04144","kind":"arxiv","version":1}},"canonical_sha256":"e98ac415ade21bbbec6f9bb65056790ac15755abded146d08b49af197bcdd8b4","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e98ac415ade21bbbec6f9bb65056790ac15755abded146d08b49af197bcdd8b4","first_computed_at":"2026-05-18T00:07:06.713549Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:07:06.713549Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"eKRVJA4LR2TlsPGI+BmbHf2WeSF48uXgsu2oSA6Ly97G3+ktEHoUpEkrVdQg/9MRThzvC3VL4OpmmPaeX+nOBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:07:06.714307Z","signed_message":"canonical_sha256_bytes"},"source_id":"1806.04144","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:67dbfc2281ca5a32d839e92a1c3a84dfe114c271db0f1a24c04b817099c33c14","sha256:4b5b71ab7920a4a70a358c5c4bda19c0a6bf847a49a494e28dfc7fef12e38aa7"],"state_sha256":"9aea944c744733eae7f11ec28e539e0cbcbfb72f78dd541843efc3d420077636"}