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

Measuring the small primordial nonGaussianity (PNG) predicted by cosmicinflation theories may help diagnose them. The detectability of PNG by itsimprint on the 21cm power spectrum from the epoch of reionization is reassessedhere in terms of $f_{NL}$, the local nonlinearity parameter. We find that anoptimum, multi-frequency observation by SKA can achieve $\Delta f_{NL} \sim 3$(comparable to recent Planck CMB limits), while a cosmic-variance-limited arrayof this size like Omniscope can even detect $\Delta f_{NL} \sim 0.2$. Thissubstantially revises the methods and results of previous work.

Primordial Non-Gaussianity Estimation using 21 cm Tomography from the Epoch of Reionization