{"paper":{"title":"Reticulum II: Particle Dark Matter and Primordial Black Holes Limits","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"astro-ph.HE","authors_text":"Aaron C. Vincent, Celine Boehm, Francesca Calore, Martin G. H. Krause, Pasquale D. Serpico, Roland Diehl, Thomas Siegert","submitted_at":"2021-09-08T17:26:52Z","abstract_excerpt":"Reticulum II (Ret II) is a satellite galaxy of the Milky Way and presents a prime target to investigate the nature of dark matter (DM) because of its high mass-to-light ratio. We evaluate a dedicated INTEGRAL observation campaign data set to obtain $\\gamma$-ray fluxes from Ret II and compare those with expectations from DM. Ret II is not detected in the $\\gamma$-ray band 25--8000 keV, and we derive a flux limit of $\\lesssim 10^{-8}\\,\\mathrm{erg\\,cm^{-2}\\,s^{-1}}$. The previously reported 511 keV line is not seen, and we find a flux limit of $\\lesssim 1.7 \\times 10^{-4}\\,\\mathrm{ph\\,cm^{-2}\\,s^"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2109.03791","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/2109.03791/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"}