Baryon-CDM isocurvature galaxy bias with IllustrisTNG

@article{Barreira2020BaryonCDMIG,
  title={Baryon-CDM isocurvature galaxy bias with IllustrisTNG},
  author={A. Barreira and G. Cabass and D. Nelson and F. Schmidt},
  journal={Journal of Cosmology and Astroparticle Physics},
  year={2020},
  volume={2020},
  pages={005-005}
}
  • A. Barreira, G. Cabass, +1 author F. Schmidt
  • Published 2020
  • Physics
  • Journal of Cosmology and Astroparticle Physics
  • We study the impact that baryon-CDM relative density perturbations $\delta_{bc}$ have on galaxy formation using cosmological simulations with the IllustrisTNG model. These isocurvature (non-adiabatic) perturbations can be induced primordially, if multiple fields are present during inflation, and are generated before baryon-photon decoupling when baryons did not comove with CDM. The presence of long-wavelength $\delta_{bc}$ perturbations in our simulations is mimicked by modifying the ratios of… CONTINUE READING
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