{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:4FFSFREBNR4ZD5LGGRXJAA66AY","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":"07cf406357765c14e61e2b6e79f916bf8eefbe487c57a0ee429e98f0bdf6bc40","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2021-01-21T18:18:11Z","title_canon_sha256":"cbc1f9c56727fae3f701ddd2167a21acb99cb83426057a94053f7ad226b9f335"},"schema_version":"1.0","source":{"id":"2101.08760","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2101.08760","created_at":"2026-07-05T02:21:44Z"},{"alias_kind":"arxiv_version","alias_value":"2101.08760v1","created_at":"2026-07-05T02:21:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2101.08760","created_at":"2026-07-05T02:21:44Z"},{"alias_kind":"pith_short_12","alias_value":"4FFSFREBNR4Z","created_at":"2026-07-05T02:21:44Z"},{"alias_kind":"pith_short_16","alias_value":"4FFSFREBNR4ZD5LG","created_at":"2026-07-05T02:21:44Z"},{"alias_kind":"pith_short_8","alias_value":"4FFSFREB","created_at":"2026-07-05T02:21:44Z"}],"graph_snapshots":[{"event_id":"sha256:8828d97c28d2e5f2f2a0cd6b0028be4bad68bb719ee94c930b6bd5078f7ee055","target":"graph","created_at":"2026-07-05T02:21:44Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2101.08760/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We report on SRG/eROSITA, ZTF, ASAS-SN, Las Cumbres, NEOWISE-R, and Swift XRT/UVOT observations of the unique ongoing event AT 2019avd, located in the nucleus of a previously inactive galaxy at $z=0.029$. eROSITA first observed AT 2019avd on 2020-04-28 during its first all sky survey, when it was detected as an ultra-soft X-ray source ($kT\\sim 85$ eV) that was $\\gtrsim 90$ times brighter in the $0.2-2$ keV band than a previous 3$\\sigma$ upper flux detection limit (with no archival X-ray detection at this position). The ZTF optical light curve in the $\\sim 450$ days preceding the eROSITA detect","authors_text":"A. Drake, A. Goobar, A. Kawka, A. Malyali, A. Merloni, A. Rau, B. Rusholme, B. Shappee, B. Trakhtenbrot, C. Fremling, C. Ricci, D. Duev, D. Hiramatsu, D. van der Boom, E. Bellm, F. Masci, G. Anderson, I. Arcavi, J. Buchner, J. Burke, J. C. A. Miller-Jones, J. Sollerman, K. Nandra, L. Tartaglia, M. Graham, M. Schramm, M. Soumagnac, R. Walters, S. Frederick, S. Gezari, S. van Velzen, Z. Liu","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2021-01-21T18:18:11Z","title":"AT 2019avd: A novel addition to the diverse population of nuclear transients"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2101.08760","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:ad6de33d70969dceade5e206b3622b67383d6165cb0fca80dd17de59674d92a6","target":"record","created_at":"2026-07-05T02:21:44Z","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":"07cf406357765c14e61e2b6e79f916bf8eefbe487c57a0ee429e98f0bdf6bc40","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2021-01-21T18:18:11Z","title_canon_sha256":"cbc1f9c56727fae3f701ddd2167a21acb99cb83426057a94053f7ad226b9f335"},"schema_version":"1.0","source":{"id":"2101.08760","kind":"arxiv","version":1}},"canonical_sha256":"e14b22c4816c7991f566346e9003de0623b46ba9a4a36811c67a339c75481d26","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e14b22c4816c7991f566346e9003de0623b46ba9a4a36811c67a339c75481d26","first_computed_at":"2026-07-05T02:21:44.374576Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T02:21:44.374576Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"IQgQbsWpaAcDUwWs2E5s+5kck7Wpr8wz2zWBWEarS7GkQTIw8Ru08upNSidFOxQKcHfshLnNI/OiD3XgtSUVAA==","signature_status":"signed_v1","signed_at":"2026-07-05T02:21:44.375036Z","signed_message":"canonical_sha256_bytes"},"source_id":"2101.08760","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ad6de33d70969dceade5e206b3622b67383d6165cb0fca80dd17de59674d92a6","sha256:8828d97c28d2e5f2f2a0cd6b0028be4bad68bb719ee94c930b6bd5078f7ee055"],"state_sha256":"ef46e809a6a8a13de570b96707b892548e185ac77cc2a0046fadc30e6a657776"}