English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Galaxies on the largest scales of the Universe are observed to be embedded inthe filamentary cosmic web which is shaped by the nonlinear tidal field. As anefficient tool to quantitatively describe the statistics of this cosmic web, wepresent the anisotropic two-point correlation functions of the nonlineartraceless tidal field in the principal-axis frame, which are measured usingnumerical data from an N-body simulation. We show that both of the nonlineardensity and traceless tidal fields are more strongly correlated along thedirections perpendicular to the eigenvectors associated with the largesteigenvalues of the local tidal field. The correlation length scale of thetraceless tidal field is found to be ~20 Mpc/h, which is much larger than thatof the density field ~5 Mpc/h. We also provide analytic fitting formulae forthe anisotropic correlation functions of the traceless tidal field, which turnout to be in excellent agreement with the numerical results. We expect that ournumerical results and analytic formula are useful to disentangle cosmologicalinformation from the filamentary network of the large-scale structures.

The Anisotropic Two-Point Correlation Functions of the Nonlinear Traceless Tidal Field in the Principal-Axis Frame