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 present a measurement of two-dimensional (2D) redshift-space powerspectrum for the Baryon Oscillation Spectroscopic Survey (BOSS) Data Release 11CMASS galaxies in the North Galactic Cap (NGC) based on the method developed byJing & Borner (2001). In this method, we first measure the 2D redshift-spacecorrelation function for the CMASS galaxies, and obtain the 2D power spectrumbased on Fourier Transform of the correlation function. The method is testedwith an N-body mock galaxy catalog, which demonstrates that the method canyield an accurate and unbiased measurement of the redshift-space power spectrumgiven the input 2D correlation function is correct. Compared with previousmeasurements in literature that are usually based on direct Fourier Transformin redshift space, our method has the advantages that the window function andshot-noise are fully corrected. In fact, our 2D power spectrum, by itsconstruction, can accurately reproduce the 2D correlation function, and in themeanwhile can reproduce, for example, the 2D power spectrum of Beutler et al.(2014) accurately if ours is convolved with the window function they provided.Thus, our measurement can facilitate a direct comparison with the theoreticalpredictions. With this accurate measurement of the 2D power spectrum, we thendevelop a method to measure the structure growth rate, by separating theanisotropic redshift-space power spectrum from the isotropic real-space powerspectrum. We have also carefully corrected for the nonlinearities in themapping from real space to redshift space, according to the theoretical modelof Zhang et al. (2013). Finally, we obtain f(zeff)sigma_8(zeff)=0.438\pm0.037at the effective redshift zeff=0.57, where f(zeff) is the linear growth rate atredshift zeff. The result is useful for constraining cosmological parameters.The measurements of 2D power spectrum will be released soon.

Measurement of Redshift Space Power Spectrum for BOSS galaxies and the Growth Rate at redshift 0.57