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Correlation Analysis between Spin, Velocity Shear, and Vorticity of Baryonic and Dark Matter Halos
Liu Lili
2016
Source PublicationActa Astronomica Sinica
Volume57Issue:3Pages:271-281
AbstractUsing cosmological hydrodynamic simulations, we investigate the alignments between velocity shear, vorticity, and the spin of dark matter halos, and study the correlation between baryonic and dark matter. We find that (1) mis-alignment between vorticity of baryonic and dark matter would develop on scales < 0.2h~(-1) Mpc; (2) the vorticity of baryonic matter exhibits stronger alignment/anti-alignment with the eigenvectors of velocity shear than that of dark matter; (3) small/massive halos spinning parallel/perpendicular to the host filaments are sensitive to the identification of cosmic web, simulation box size, and resolution. These factors might complicate the connection between the spins of dark matter halos and galaxies, and affect the correlation signal of the alignments of galaxy spin with nearby large-scale structures.
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/16857
Collection南极天文中心
Recommended Citation
GB/T 7714
Liu Lili. Correlation Analysis between Spin, Velocity Shear, and Vorticity of Baryonic and Dark Matter Halos[J]. Acta Astronomica Sinica,2016,57(3):271-281.
APA Liu Lili.(2016).Correlation Analysis between Spin, Velocity Shear, and Vorticity of Baryonic and Dark Matter Halos.Acta Astronomica Sinica,57(3),271-281.
MLA Liu Lili."Correlation Analysis between Spin, Velocity Shear, and Vorticity of Baryonic and Dark Matter Halos".Acta Astronomica Sinica 57.3(2016):271-281.
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