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Testing Lorentz invariance of dark matter with satellite galaxies

We develop the framework for testing Lorentz invariance in the dark matter sector using galactic dynamics. We consider a Lorentz violating (LV) vector field acting on the dark matter component of a satellite galaxy orbiting in a host halo. We introduce a numerical model for the dynamics of satellite...

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Detalles Bibliográficos
Autores principales: Bettoni, Dario, Nusser, Adi, Blas, Diego, Sibiryakov, Sergey
Lenguaje:eng
Publicado: 2017
Materias:
Acceso en línea:https://dx.doi.org/10.1088/1475-7516/2017/05/024
http://cds.cern.ch/record/2255199
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author Bettoni, Dario
Nusser, Adi
Blas, Diego
Sibiryakov, Sergey
author_facet Bettoni, Dario
Nusser, Adi
Blas, Diego
Sibiryakov, Sergey
author_sort Bettoni, Dario
collection CERN
description We develop the framework for testing Lorentz invariance in the dark matter sector using galactic dynamics. We consider a Lorentz violating (LV) vector field acting on the dark matter component of a satellite galaxy orbiting in a host halo. We introduce a numerical model for the dynamics of satellites in a galactic halo and for a galaxy in a rich cluster to explore observational consequences of such an LV field. The orbital motion of a satellite excites a time dependent LV force which greatly affects its internal dynamics. Our analysis points out key observational signatures which serve as probes of LV forces. These include modifications to the line of sight velocity dispersion, mass profiles and shapes of satellites. With future data and a more detailed modeling these signatures can be exploited to constrain a new region of the parameter space describing the LV in the dark matter sector.
id cern-2255199
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2017
record_format invenio
spelling cern-22551992023-10-04T06:04:08Zdoi:10.1088/1475-7516/2017/05/024http://cds.cern.ch/record/2255199engBettoni, DarioNusser, AdiBlas, DiegoSibiryakov, SergeyTesting Lorentz invariance of dark matter with satellite galaxieshep-phParticle Physics - Phenomenologyastro-ph.GAAstrophysics and Astronomyastro-ph.COAstrophysics and AstronomyWe develop the framework for testing Lorentz invariance in the dark matter sector using galactic dynamics. We consider a Lorentz violating (LV) vector field acting on the dark matter component of a satellite galaxy orbiting in a host halo. We introduce a numerical model for the dynamics of satellites in a galactic halo and for a galaxy in a rich cluster to explore observational consequences of such an LV field. The orbital motion of a satellite excites a time dependent LV force which greatly affects its internal dynamics. Our analysis points out key observational signatures which serve as probes of LV forces. These include modifications to the line of sight velocity dispersion, mass profiles and shapes of satellites. With future data and a more detailed modeling these signatures can be exploited to constrain a new region of the parameter space describing the LV in the dark matter sector.arXiv:1702.07726CERN-TH-2017-037INR-TH-2017-003oai:cds.cern.ch:22551992017-02-24
spellingShingle hep-ph
Particle Physics - Phenomenology
astro-ph.GA
Astrophysics and Astronomy
astro-ph.CO
Astrophysics and Astronomy
Bettoni, Dario
Nusser, Adi
Blas, Diego
Sibiryakov, Sergey
Testing Lorentz invariance of dark matter with satellite galaxies
title Testing Lorentz invariance of dark matter with satellite galaxies
title_full Testing Lorentz invariance of dark matter with satellite galaxies
title_fullStr Testing Lorentz invariance of dark matter with satellite galaxies
title_full_unstemmed Testing Lorentz invariance of dark matter with satellite galaxies
title_short Testing Lorentz invariance of dark matter with satellite galaxies
title_sort testing lorentz invariance of dark matter with satellite galaxies
topic hep-ph
Particle Physics - Phenomenology
astro-ph.GA
Astrophysics and Astronomy
astro-ph.CO
Astrophysics and Astronomy
url https://dx.doi.org/10.1088/1475-7516/2017/05/024
http://cds.cern.ch/record/2255199
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AT nusseradi testinglorentzinvarianceofdarkmatterwithsatellitegalaxies
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