{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2020:LXOCI5OIOG2SWVV5WUJNWBKUNI","short_pith_number":"pith:LXOCI5OI","schema_version":"1.0","canonical_sha256":"5ddc2475c871b52b56bdb512db05546a175c0a01d575aee6dbae9b1fc7ccf16e","source":{"kind":"arxiv","id":"2010.08554","version":1},"attestation_state":"computed","paper":{"title":"A Family Tree of Optical Transients from Narrow-Line Seyfert 1 Galaxies","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"Ashish A. Mahabal, Ben Rusholme, Charlotte Ward, Daniel A. Perley, Daniel Stern, Dmitry A. Duev, Erica Hammerstein, Eric C. Bellm, Frank J. Masci, Igor Andreoni, Jesper Sollerman, Lin Yan, Marek Kowalski, Matthew J. Graham, Michael Medford, Richard Walters, Sara Frederick, Sjoert van Velzen, Suvi Gezari, Tiara Hung","submitted_at":"2020-10-16T18:00:00Z","abstract_excerpt":"The Zwicky Transient Facility (ZTF) has discovered five new events belonging to an emerging class of AGN undergoing smooth flares with large amplitudes and rapid rise times. This sample consists of several transients that were initially classified as supernovae with narrow spectral lines. However, upon closer inspection, all of the host galaxies display resolved Balmer lines characteristic of a narrow-line Seyfert 1 (NLSy1) galaxy. The transient events are long-lived, over 400 days on average. We report UV and X-ray follow-up of the flares and observe persistent UV-bright emission, with two of"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"2010.08554","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2020-10-16T18:00:00Z","cross_cats_sorted":[],"title_canon_sha256":"a86ed64ee8faa8aee1f156ef75546e46195f9b960c6609fbd37474aed33d7075","abstract_canon_sha256":"cd586b767842e83bb1255b3d17131aaeefb7b384af756dc00156d64d3e1f7bf2"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T03:23:37.276797Z","signature_b64":"2EYtJjfsPSVAINPMYWB6rUkJciZuFMx6O5GqG+K/73rYfYAlNGxbOGpdq6AWkMZi4IPI2d6b2ZPBHMP4xvcPCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"5ddc2475c871b52b56bdb512db05546a175c0a01d575aee6dbae9b1fc7ccf16e","last_reissued_at":"2026-07-05T03:23:37.276289Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T03:23:37.276289Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"A Family Tree of Optical Transients from Narrow-Line Seyfert 1 Galaxies","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"Ashish A. Mahabal, Ben Rusholme, Charlotte Ward, Daniel A. Perley, Daniel Stern, Dmitry A. Duev, Erica Hammerstein, Eric C. Bellm, Frank J. Masci, Igor Andreoni, Jesper Sollerman, Lin Yan, Marek Kowalski, Matthew J. Graham, Michael Medford, Richard Walters, Sara Frederick, Sjoert van Velzen, Suvi Gezari, Tiara Hung","submitted_at":"2020-10-16T18:00:00Z","abstract_excerpt":"The Zwicky Transient Facility (ZTF) has discovered five new events belonging to an emerging class of AGN undergoing smooth flares with large amplitudes and rapid rise times. This sample consists of several transients that were initially classified as supernovae with narrow spectral lines. However, upon closer inspection, all of the host galaxies display resolved Balmer lines characteristic of a narrow-line Seyfert 1 (NLSy1) galaxy. The transient events are long-lived, over 400 days on average. We report UV and X-ray follow-up of the flares and observe persistent UV-bright emission, with two of"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2010.08554","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2010.08554/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"aliases":[{"alias_kind":"arxiv","alias_value":"2010.08554","created_at":"2026-07-05T03:23:37.276357+00:00"},{"alias_kind":"arxiv_version","alias_value":"2010.08554v1","created_at":"2026-07-05T03:23:37.276357+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2010.08554","created_at":"2026-07-05T03:23:37.276357+00:00"},{"alias_kind":"pith_short_12","alias_value":"LXOCI5OIOG2S","created_at":"2026-07-05T03:23:37.276357+00:00"},{"alias_kind":"pith_short_16","alias_value":"LXOCI5OIOG2SWVV5","created_at":"2026-07-05T03:23:37.276357+00:00"},{"alias_kind":"pith_short_8","alias_value":"LXOCI5OI","created_at":"2026-07-05T03:23:37.276357+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/LXOCI5OIOG2SWVV5WUJNWBKUNI","json":"https://pith.science/pith/LXOCI5OIOG2SWVV5WUJNWBKUNI.json","graph_json":"https://pith.science/api/pith-number/LXOCI5OIOG2SWVV5WUJNWBKUNI/graph.json","events_json":"https://pith.science/api/pith-number/LXOCI5OIOG2SWVV5WUJNWBKUNI/events.json","paper":"https://pith.science/paper/LXOCI5OI"},"agent_actions":{"view_html":"https://pith.science/pith/LXOCI5OIOG2SWVV5WUJNWBKUNI","download_json":"https://pith.science/pith/LXOCI5OIOG2SWVV5WUJNWBKUNI.json","view_paper":"https://pith.science/paper/LXOCI5OI","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2010.08554&json=true","fetch_graph":"https://pith.science/api/pith-number/LXOCI5OIOG2SWVV5WUJNWBKUNI/graph.json","fetch_events":"https://pith.science/api/pith-number/LXOCI5OIOG2SWVV5WUJNWBKUNI/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/LXOCI5OIOG2SWVV5WUJNWBKUNI/action/timestamp_anchor","attest_storage":"https://pith.science/pith/LXOCI5OIOG2SWVV5WUJNWBKUNI/action/storage_attestation","attest_author":"https://pith.science/pith/LXOCI5OIOG2SWVV5WUJNWBKUNI/action/author_attestation","sign_citation":"https://pith.science/pith/LXOCI5OIOG2SWVV5WUJNWBKUNI/action/citation_signature","submit_replication":"https://pith.science/pith/LXOCI5OIOG2SWVV5WUJNWBKUNI/action/replication_record"}},"created_at":"2026-07-05T03:23:37.276357+00:00","updated_at":"2026-07-05T03:23:37.276357+00:00"}