Galaxy UV-luminosity function and reionization constraints on axion dark matter

By Brandon Bozek, D. Marsh, J. Silk, R. Wyse. 2014

134 citations recorded by the source corpus.

If the dark matter (DM) were composed of axions, then structure formation in the Universe would be suppressed below the axion Jeans scale. Using an analytic model for the halo mass function of a mixed DM model with axions and cold dark matter, combined with the abundance-matching technique, we construct the UV-luminosity function. Axions suppress high-z galaxy formation and the UV-luminosity function is truncated at a faintest limiting magnitude. From the UV-luminosity function, we predict the reionization history of the universe and nd that axion DM causes reionization to occur at lower redshift. We search for evidence of axions using the Hubble Ultra Deep Field UV-luminosity function in the redshift range z = 6{10, and the optical depth to reionization, , as measured from cosmic microwave background polarization. All probes we consider consistently exclude ma . 10 23 eV from contributing more than half of the DM, with our strongest constraint ruling this model out at more than 8 signicance. In conservative models of reion

Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/717886b0cd94bc759b4b6f141e26978d8666fe87

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Citations in the corpus

CONTRASTING GALAXY FORMATION FROM QUANTUM WAVE DARK MATTER, ψDM, WITH ΛCDM, USING PLANCK AND HUBBLE DATA (2015, methodology): “However, the inferred mass-to-light ratio features a sharp, and probably unphysical, drop at the faint end (Bozek et al. 2015).”
Axion dark matter, solitons and the cusp–core problem (2015, methodology): “Our alternative prior uses the results Bozek et al. (2015), which constrains ma > 10−23 eV at more than 8σ significance using Hubble UltraDeep Field (HUDF).”
Black hole formation from axion stars (2016, background): “[4, 115]), while on small scales, pressure support leads to the formation of axion stars (e.”
Ultralight scalars as cosmological dark matter (2016, methodology): “[165], once this is updated to use the 2016 Planck value for the reionization optical depth [163].”
Superradiance: Energy Extraction, Black-Hole Bombs and Implications for Astrophysics and Particle Physics (2015, background): “These effects have been recently investigated in the contexts of testing stringy axions and ultralight scalars [9, 482, 483, 340, 341, 484] (these bounds being complementary to those coming from cosmological observations [485, 329]), to derive bounds on light vector fields [10] and on the mass of th”
Constraining the mass of light bosonic dark matter using SDSS Lyman-α forest (2017, background): “The galaxy UV-luminosity function at high redshift z ∼ 4−10 is therefore expected to be strongly attenuated for MUV >∼ −16, and accordingly reionization is also expected to be delayed (Bozek et al. 2015; Sarkar et al. 2016).”