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Dark matter hurricane: Measuring the S1 stream with dark matter detectors

Identificadores del recurso

http://zaguan.unizar.es/record/75986

10.1103/PhysRevD.98.103006

Procedencia

(Repositorio Institucional Zaguán)

Ficha

Título:: Dark matter hurricane: Measuring the S1 stream with dark matter detectors
Descripción:: The recently discovered S1 stream passes through the Solar neighborhood on a low inclination, counterrotating orbit. The progenitor of S1 is a dwarf galaxy with a total mass comparable to the present-day Fornax dwarf spheroidal, so the stream is expected to have a significant DM component. We compute the effects of the S1 stream on WIMP and axion detectors as a function of the density of its unmeasured dark component. In WIMP detectors the S1 stream supplies more high energy nuclear recoils so will marginally improve DM detection prospects. We find that even if S1 comprises less than 10% of the local density, multiton xenon WIMP detectors can distinguish the S1 stream from the bulk halo in the relatively narrow mass range between 5 and 25 GeV. In directional WIMP detectors such as CYGNUS, S1 increases DM detection prospects more substantially since it enhances the anisotropy of the WIMP signal. Finally, we show that axion haloscopes possess by far the greatest potential sensitivity to the S1 stream if its dark matter component is sufficiently cold. Once the axion mass has been discovered, the distinctive velocity distribution of S1 can easily be extracted from the axion power spectrum.
Idioma:: English
Relación:: info:eu-repo/grantAgreement/ES/MINECO/FPA2015-65745-P; info:eu-repo/grantAgreement/EC/FP7/308024/EU/Measuring the Lumpiness of Dark Matter With Tidal Streams/STREAMS
Autor/Productor:: O'Hare, C.A.J.; McCabe, C.; Evans, N.W.; Myeong, G.; Belokurov, V.
Derechos:: All rights reserved; http://www.europeana.eu/rights/rr-f/
Fecha:: 2018
Tipo de recurso:: info:eu-repo/semantics/article; info:eu-repo/semantics/publishedVersion
Formato:: application/pdf

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