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Gravitational Waves as a New Probe of Bose-Einstein Condensate Dark Matter

MPG-Autoren
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Dev,  Bhupal
Werner Rodejohann - ERC Starting Grant, Junior Research Groups, MPI for Nuclear Physics, Max Planck Society;

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Lindner,  Manfred
Division Prof. Dr. Manfred Lindner, MPI for Nuclear Physics, Max Planck Society;

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Ohmer,  Sebastian
Division Prof. Dr. Manfred Lindner, MPI for Nuclear Physics, Max Planck Society;

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Volltexte (frei zugänglich)

1609.03939.pdf
(Preprint), 317KB

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Zitation

Dev, B., Lindner, M., & Ohmer, S. (2016). Gravitational Waves as a New Probe of Bose-Einstein Condensate Dark Matter. Retrieved from http://arxiv.org/abs/1609.03939.


Zitierlink: http://hdl.handle.net/11858/00-001M-0000-002B-BB7F-E
Zusammenfassung
There exists a class of ultralight Dark Matter (DM) models which could form a Bose-Einstein condensate (BEC) in the early universe and behave as a single coherent wave instead of individual particles in galaxies. We show that a generic BEC DM halo intervening along the line of sight of a gravitational wave (GW) signal could induce an observable change in the speed of GW, with the effective refractive index depending only on the mass and self-interaction of the constituent DM particles and the GW frequency. Hence, we propose to use the deviation in the speed of GW as a new probe of the BEC DM parameter space. With a multi-messenger approach to GW astronomy and/or with extended sensitivity to lower GW frequencies, the entire BEC DM parameter space can be effectively probed by our new method in the near future.