The Halo Spin Transition as a Probe of Dark Energy

Abstract

We present a numerical evidence supporting the claim that the mass-dependent transitions of the halo spin orientations from the intermediate to the minor principal directions of the local tidal fields can in principle be a useful discriminator of dark energy models. We first define a spin transition zone as the mass range of the halos, $\Delta m_t$, for which the intrinsic spin alignments with the minor tidal principal directions become as strong as that with the intermediate principal directions. Then, utilizing the halo samples from the DEUS simulations performed separately for the WMAP7 $\Lambda$CDM, phantom DE and quintessence models, we investigate if and how the three different dark energy models differ in $\Delta m_t$. It is shown that the differences in $\Delta m_t$ among the three dark energy models are significant enough to discriminate the models from one another and robust against the variations of the smoothing scale of the tidal field and redshift. Noting that a narrower spin transition zone is more powerful as a probe of dark energy, we also show that the spin transition zones become narrower at higher redshifts, in the filamentary environments and for the case that the tidal fields are smoothed on the smaller scales. Our result is consistent with the scenario that $\Delta m_t$ is mainly determined by how fast the nonlinear evolution of the tidal field proceeds, which in turn sensitively depends on the background cosmology.

arXiv commentaccepted for publication in ApJ, 13 figures, 2 tables, minor revision

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• SDSS-IV MaNGA: 3D spin alignment of spiral and S0 galaxies
• Modeling Intrinsic Galaxy Alignment in the MICE Simulation
• An Observed Transition of Galaxy Spins on the Void Surfaces
• Detection of the Mass-Dependent Dual-Type Transition of Galaxy Spins in IllustrisTNG Simulations
• Baryonic Effects on Lagrangian Clustering and Angular Momentum Reconstruction
• Cosmic filament spin -- II: filament spin and its impact on galaxy spin-filament alignment in a cosmological simulation
• Spin speed correlations and the evolution of galaxy-halo systems
• Reoriented Memory of Galaxy Spins for the Early Universe
• The Density Parity Model for the Evolution of the Subhalo Inner Spin Alignments with the Cosmic Web
• Dependence of the dynamical properties of light-cone simulation dark matter halos on their environment
• How the Galaxy Stellar Spins Acquire a Peculiar Tidal Connection?
• Galaxy Spin Alignment with Tidal Fields in the SDSS-IV MaNGA Survey
• A high-significance detection of primordial tidal torque imprints