{"paper":{"title":"Changing-look Active Galactic Nuclei from the Dark Energy Spectroscopic Instrument. I.Sample from the Early Data","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Aaron Meisner, Anthony Kremin, Axel de la Macorra, Claire Poppett, David Brooks, David M. Alexander, Eusebio Sanchez, Francisco Prada, Graziano Rossi, Gregory Tarl\\'e, Hee-Jong Seo, Hu Zou, Jaime E. Forero-Romero, Jessica Nicole Aguilar, Jipeng Sui, John Moustakas, Jundan Nie, Kevin Fanning, Klaus Honscheid, Linhua Jiang, Ma{\\l}gorzata Siudek, Martin Landriau, Mehdi Rezaie, Michael Schubnell, Peter Doel, Ramon Miquel, Rebecca Canning, Satya Gontcho A Gontcho, Stephanie Juneau, Steven Ahlen, Tamara M. Davis, Theodore Kisner, Todd Claybaugh, Victoria Anne Fawcett, Wei-Jian Guo, Zhiming Zhou, Zhiwei Pan","submitted_at":"2023-07-17T07:24:02Z","abstract_excerpt":"Changing-look Active Galactic Nuclei (CL AGN) can be generally confirmed by the emergence (turn-on) or disappearance (turn-off) of broad emission lines, associated with a transient timescale (about $100\\sim5000$ days) that is much shorter than predicted by traditional accretion disk models. We carry out a systematic CL AGN search by cross-matching the spectra coming from the Dark Energy Spectroscopic Instrument and the Sloan Digital Sky Survey. Following previous studies, we identify CL AGN based on $\\rm{H}\\alpha $, $\\rm{H}\\beta$, and Mg\\,{\\sc ii} at $z\\leq0.75$ and Mg\\,{\\sc ii}, C\\,{\\sc iii}]"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2307.08289","kind":"arxiv","version":2},"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/2307.08289/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"}