A detection of baryon acoustic oscillations from the distribution of galaxy clusters
作者： Tao Hong , J. L. Han , Z. L. Wen
DOI: 10.3847/0004-637X/826/2/154
关键词: Galaxy cluster 、 Cosmology 、 Amplitude 、 Physics 、 Astrophysics 、 Correlation function (astronomy) 、 Baryon acoustic oscillations 、 Length scale 、 Baryon 、 Redshift
摘要: We calculate the correlation function of 79,091 galaxy clusters in redshift region $z \leq 0.5$ selected from WH15 cluster catalog. With a weight mass, significant baryon acoustic oscillation (BAO) peak is detected on with significance $3.7 \sigma$. By fitting $\Lambda$CDM model curve, we find $D_v(z = 0.331) r_d^{fid}/r_d 1261.5 \pm 48$~Mpc which consistent Planck 2015 cosmology. that higher mass sub-sample shows amplitude at small scales $r < 80~h^{-1}{\rm Mpc}$, our previous result. The 2D this large sample faint BAO ring $1.8\sigma$, distance scale parameters directions across and along line-of-sight are $\alpha_{\sigma} 1.02 0.06$ $\alpha_{\pi} 0.94 0.10$, respectively.
arxiv.org
128.84.21.199参考文章(69)
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