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oai:docta.ucm.es:20.500.14352/121352024-09-06T15:16:42Zcom_20.500.14352_14col_20.500.14352_15

00925njm 22002777a 4500 dc Contreras González, José Luis author Domínguez, A. author Fonseca González, María Victoria author López Moya, Marcos author 2018-03 The dwarf spheroidal galaxy Ursa Major II (UMaII) is believed to be one of the most dark-matter dominated systems among the Milky Way satellites and represents a suitable target for indirect dark matter (DM) searches. The MAGIC telescopes carried out a deep observation campaign on UMaII between 2014 and 2016, collecting almost one hundred hours of good-quality data. This campaign enlarges the pool of DM targets observed at very high energy (E ˃∼ 50 GeV) in search for signatures of DM annihilation in the wide mass range between ∼ to 100 GeV and ∼ to 100TeV. To this end, the data are analyzed with the full likelihood analysis, a method based on the exploitation of the spectral information of the recorded events for an optimal sensitivity to the explored DM models. We obtain constraints on the annihilation cross-section for different channels that are among the most robust and stringent achieved so far at the TeV mass scale from observations of dwarf satellite galaxies. 1475-7516 10.1088/1475-7516/2018/03/009 https://hdl.handle.net/20.500.14352/12135 http://dx.doi.org/10.1088/1475-7516/2018/03/009 http://iopscience.iop.org Indirect dark matter searches in the dwarf satellite galaxy Ursa Major II with the MAGIC telescopes