{"paper":{"title":"A Spectroscopic Search for Optical Emission Lines from Dark Matter Decay","license":"http://creativecommons.org/publicdomain/zero/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"Anthony Kremin, Axel de la Macorra, Benjamin A. Weaver, Claire Poppett, Daniel J. Eisenstein, David Brooks, Eusebio Sanchez, Graziano Rossi, Gregory Tarle, Hanyue Wang, Jaime E. Forero-Romero, Jessica Nicole Aguilar, Marc Manera, Mehdi Rezaie, Michael E. Levi, Michael Schubnell, Peter Doel, Ramon Miquel, Stephen Bailey, Steven Ahlen, Todd Claybaugh, Zhimin Zhou","submitted_at":"2023-11-09T16:07:05Z","abstract_excerpt":"We search for narrow-line optical emission from dark matter decay by stacking dark-sky spectra from the Dark Energy Spectroscopic Instrument (DESI) at the redshift of nearby galaxies from DESI's Bright Galaxy and Luminous Red Galaxy samples. Our search uses regions separated by 5 to 20 arcsecond from the centers of the galaxies, corresponding to an impact parameter of approximately $50\\,\\rm kpc$. No unidentified spectral line shows up in the search, and we place a line flux limit of $10^{-19}\\,\\rm{ergs}/\\rm{s}/\\rm{cm}^{2}/\\rm{arcsec}^{2}$ on emissions in the wavelength range of $2000$ -- $9000"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2311.05476","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/2311.05476/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"}