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Título:
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Indirect dark matter searches in the dwarf satellite galaxy Ursa Major II with the MAGIC telescopes
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Autores:
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Contreras González, José Luis ;
Dominguez, A. ;
Fonseca González, Mª Victoria ;
López Moya, Marcos
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Tipo de documento:
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texto impreso
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Editorial:
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IOP Publishing, 2018-03
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Dimensiones:
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application/pdf
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Nota general:
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info:eu-repo/semantics/openAccess
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Idiomas:
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Palabras clave:
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Estado = Publicado
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Materia = Ciencias: Física: Física nuclear
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Tipo = Artículo
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Resumen:
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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.
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En línea:
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https://eprints.ucm.es/47671/1/ContrerasJL10preprint.pdf
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