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Title: Fundamental Physics with the Hubble Frontier Fields: Constraining Dark Matter Models with the Abundance of Extremely Faint and Distant Galaxies

Abstract

We show that the measured abundance of ultra-faint lensed galaxies at z≈6 in the Hubble Frontier Fields (HFF) provides stringent constraints on the parameter space of (i) dark matter models based on keV sterile neutrinos; (ii) “fuzzy” wavelike dark matter models, based on Bose–Einstein condensates of ultra-light particles. For the case of sterile neutrinos, we consider two production mechanisms: resonant production through mixing with active neutrinos and the decay of scalar particles. For the former model, we derive constraints for the combination of sterile neutrino mass m{sub ν} and mixing parameter sin{sup 2}(2θ) which provide the tightest lower bounds on the mixing angle (and hence on the lepton asymmetry) derived so far by methods independent of baryonic physics. For the latter we compute the allowed combinations of the scalar mass, its coupling to the Higgs field, and the Yukawa coupling of scalar to sterile neutrinos. We compare our results to independent existing astrophysical bounds on sterile neutrinos in the same mass range. For the case of “fuzzy” dark matter, we show that the observed number density ≈1/Mpc{sup 3} of high-redshift galaxies in the HFF sets a lower limit m{sub ψ}⩾8⋅10{sup −22} eV (at the 3-σ confidence level) on the particle mass,more » a result that strongly disfavors wavelike bosonic dark matter as a viable model for structure formation. We discuss the impact on our results of uncertainties due to systematics in the selection of highly magnified, faint galaxies at high redshift.« less

Authors:
; ;  [1]; ;  [2];  [3];  [4]
  1. INAF—Osservatorio Astronomico di Roma, via di Frascati 33, I-00040 Monte Porzio Catone (Italy)
  2. Max-Plank-Institut für Physik (Werner-Heisenberg-Institut), Föhringer Ring 6, D-80805 München (Germany)
  3. Institute for Astronomy, Department of Physics, ETH Zurich, Wolfgang-Pauli-Strasse 27, 8093, Zurich (Switzerland)
  4. LERMA, CNRS UMR 8112, 61, Observatoire de Paris PSL, Sorbonne Universités, UPMC Univ. Paris 6, 61 Avenue de l’Observatoire, F-75014 Paris (France)
Publication Date:
OSTI Identifier:
22869392
Resource Type:
Journal Article
Journal Name:
Astrophysical Journal
Additional Journal Information:
Journal Volume: 836; Journal Issue: 1; Other Information: Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0004-637X
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; ASTROPHYSICS; COMPUTERIZED SIMULATION; DECAY; DENSITY; GALAXIES; HIGGS BOSONS; HIGGS MODEL; KEV RANGE; MASS; MIXING ANGLE; NONLUMINOUS MATTER; RED SHIFT; SPACE; STERILE NEUTRINOS; YUKAWA POTENTIAL

Citation Formats

Menci, N., Grazian, A., Castellano, M., Merle, A., Totzauer, M., Schneider, A., and Sanchez, N. G. Fundamental Physics with the Hubble Frontier Fields: Constraining Dark Matter Models with the Abundance of Extremely Faint and Distant Galaxies. United States: N. p., 2017. Web. doi:10.3847/1538-4357/836/1/61.
Menci, N., Grazian, A., Castellano, M., Merle, A., Totzauer, M., Schneider, A., & Sanchez, N. G. Fundamental Physics with the Hubble Frontier Fields: Constraining Dark Matter Models with the Abundance of Extremely Faint and Distant Galaxies. United States. https://doi.org/10.3847/1538-4357/836/1/61
Menci, N., Grazian, A., Castellano, M., Merle, A., Totzauer, M., Schneider, A., and Sanchez, N. G. Fri . "Fundamental Physics with the Hubble Frontier Fields: Constraining Dark Matter Models with the Abundance of Extremely Faint and Distant Galaxies". United States. https://doi.org/10.3847/1538-4357/836/1/61.
@article{osti_22869392,
title = {Fundamental Physics with the Hubble Frontier Fields: Constraining Dark Matter Models with the Abundance of Extremely Faint and Distant Galaxies},
author = {Menci, N. and Grazian, A. and Castellano, M. and Merle, A. and Totzauer, M. and Schneider, A. and Sanchez, N. G.},
abstractNote = {We show that the measured abundance of ultra-faint lensed galaxies at z≈6 in the Hubble Frontier Fields (HFF) provides stringent constraints on the parameter space of (i) dark matter models based on keV sterile neutrinos; (ii) “fuzzy” wavelike dark matter models, based on Bose–Einstein condensates of ultra-light particles. For the case of sterile neutrinos, we consider two production mechanisms: resonant production through mixing with active neutrinos and the decay of scalar particles. For the former model, we derive constraints for the combination of sterile neutrino mass m{sub ν} and mixing parameter sin{sup 2}(2θ) which provide the tightest lower bounds on the mixing angle (and hence on the lepton asymmetry) derived so far by methods independent of baryonic physics. For the latter we compute the allowed combinations of the scalar mass, its coupling to the Higgs field, and the Yukawa coupling of scalar to sterile neutrinos. We compare our results to independent existing astrophysical bounds on sterile neutrinos in the same mass range. For the case of “fuzzy” dark matter, we show that the observed number density ≈1/Mpc{sup 3} of high-redshift galaxies in the HFF sets a lower limit m{sub ψ}⩾8⋅10{sup −22} eV (at the 3-σ confidence level) on the particle mass, a result that strongly disfavors wavelike bosonic dark matter as a viable model for structure formation. We discuss the impact on our results of uncertainties due to systematics in the selection of highly magnified, faint galaxies at high redshift.},
doi = {10.3847/1538-4357/836/1/61},
url = {https://www.osti.gov/biblio/22869392}, journal = {Astrophysical Journal},
issn = {0004-637X},
number = 1,
volume = 836,
place = {United States},
year = {2017},
month = {2}
}