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The cluster-galaxy cross-correlation and the average infall velocity around cluster in the modified CDM models

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Abstract

The cluster-galaxy cross-correlation and the average infall velocity around cluster for the tilted CDM models, the hot-cold mixed dark matter models (MDM) and theA CDM models are calculated. And it is found that the prediction of the cluster-galaxy cross-correlation of theA CDM models with ΩA=0.9, ΩC=0.1,h=1,b = 1 or 2 is much higher than that of observation for the radius larger than 10 h−1 Mpc (H0 = 100 h.kms−1Mpc−1), and the other models are compatible with the observation on the scale of (3–20) h− Mpc. The results can be used to compare with new observations to restrict the nature of the dark matter and the biasing factor.

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Authors and Affiliations

  1. Center for Astrophysics, University of Science and Technology of China, 230026, Hefei, China

    Wenbin Lin & Yaoquan Chu

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  1. Wenbin Lin
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  2. Yaoquan Chu
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Project supported by the National Natural Science Foundation of China (Grant No. 19733001).

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Lin, W., Chu, Y. The cluster-galaxy cross-correlation and the average infall velocity around cluster in the modified CDM models. Sci. China Ser. A-Math. 41, 1092–1099 (1998). https://doi.org/10.1007/BF02871844

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  • DOI: https://doi.org/10.1007/BF02871844

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