{"paper":{"title":"A New Record Census of Dwarf AGN and a Bimodal $M_{\\rm BH}$-$M_{\\star}$ Scaling Relation with DESI DR1","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"A. de la Macorra, A. Font-Ribera, A. Kremin, A. Meisner, Arjun Dey, B. A. Weaver, C. Circosta, C. Hahn, D. Bianchi, D. Brooks, D. M. Alexander, D. Schlegel, D. Sprayberry, E. Gazta\\~naga, E. Sanchez, F. Prada, G. Gutierrez, G. Rossi, G. Tarl\\'e, H. Zou, I. P\\'erez-R\\`afols, J. Aguilar, J. E. Forero-Romero, J. Moustakas, J. Silber, K. Honscheid, K. S. Dawson, L. Le Guillou, M. Landriau, M. Manera, M. Mezcua, M. Schubnell, M. Siudek, P. Doel, Ragadeepika Pucha, R. Joyce, R. Kehoe, R. Miquel, S. Ahlen, Satya Gontcho A Gontcho, S. Ferraro, S. Juneau, S. Nadathur, S. Panda, T. Claybaugh, T. Kisner, V. A. Fawcett, Wei-Jian Guo, W. J. Percival, Y.-Y. Mao, Z. Yu","submitted_at":"2026-06-01T18:00:00Z","abstract_excerpt":"Using the first spectroscopic data release from the Dark Energy Spectroscopic Instrument (DESI DR1), we search for AGN signatures in 1,678,787 low-redshift ($0.001 \\le z \\le 0.45$) line-emitting galaxies. Based on the [NII]-BPT emission-line ratio diagnostic, we identify AGN in 314,245/1,211,573 (25.9%) high-mass ($\\log (M_{\\star}/M_{\\odot}) > 9.5$) and 9648/467,214 (2.1%) dwarf ($\\log (M_{\\star}/M_{\\odot}) \\le 9.5$) galaxies. Among these AGN, 17,949 are broad-line candidates (BL-AGN) with broad H$\\alpha$ emission, enabling black hole (BH) mass estimates using single-epoch virial methods. We f"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.02699","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/2606.02699/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"}