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

We derive an estimator for the lensing potential from galaxy number countswhich contains a linear and a quadratic term. We show that this estimator has amuch larger signal-to-noise ratio than the corresponding estimator fromintensity mapping. This is due to the additional lensing term in the numbercount angular power spectrum which is present already at linear order. Weestimate the signal-to-noise ratio for future photometric surveys. Particularlyat high redshifts, $z\gtrsim 1.5$, the signal to noise ratio can become oforder 30. Therefore, the number counts in photometric surveys would be anexcellent means to measure tomographic lensing spectra.

An Estimator for Lensing Potential from Galaxy Number Counts