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DOE OSTI · 1828711

Two-component axionic dark matter halos

Berman, Gennady Petrovich·Gorshkov, Vyacheslav N.·Tsifrinovich, Vladimir I.·Merkli, Marco·Tereshchuk, Vladimir V.
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Abstract

We consider a two-component dark matter halo (DMH) of a galaxy containing ultra-light axions (ULA) of different mass. The DMH is described as a Bose–Einstein condensate (BEC) in its ground state. In the mean-field (MF) limit, we have derived the integro-differential equations for the spherically symmetrical wave functions of the two DMH components. We studied, numerically, the radial distribution of the mass density of ULA and constructed the parameters which could be used to distinguish between the two- and one-component DMH. Here, we also discuss an interesting connection between the BEC ground state of a one-component DMH and Black Hole temperature and entropy, and Unruh temperature.

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97 MATHEMATICS AND COMPUTINGMean-fieldaxionsdark matterdensity distributiongalaxyground state

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Berman, Gennady Petrovich, Gorshkov, Vyacheslav N., Tsifrinovich, Vladimir I., Merkli, Marco, Tereshchuk, Vladimir V.. 2020-08-26. Two-component axionic dark matter halos. https://doi.org/10.1142/s0217732320502272

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