QUaD实验对CMB温度功率谱的小角尺度测量
宇宙学与河外天体物理
2009-07-24 v2
摘要
我们展示了QUaD望远镜第二和第三个观测季节在2000<ell<3000多极矩范围内对宇宙微波背景(CMB)辐射温度各向异性的测量结果。在遮蔽最亮的点源后，我们的结果与单一的LCDM预期一致。我们利用一个基于自身亮源观测校准的模型，以及源搜寻和遮蔽过程的完整模拟，估算了残余(未遮蔽)射电点源的贡献。计入这一贡献后，卡方值略有改善。我们还对带功率拟合了一个标准的SZ模板，未发现SZ贡献的强有力证据，这与sigma_8约0.8的预期相符。
引用
@article{arxiv.0901.4334,
title = {Small Angular Scale Measurements of the CMB Temperature Power Spectrum from QUaD},
author = {QUaD collaboration and R. B. Friedman and P. Ade and J. Bock and M. Bowden and M. L. Brown and G. Cahill and P. G. Castro and S. Church and T. Culverhouse and K. Ganga and W. K. Gear and S. Gupta and J. Hinderks and J. Kovac and A. E. Lange and E. Leitch and S. J. Melhuish and Y. Memari and J. A. Murphy and A. Orlando and C. O' Sullivan and L. Piccirillo and C. Pryke and N. Rajguru and B. Rusholme and R. Schwarz and A. N. Taylor and K. L. Thompson and A. H. Turner and E. Y. S. Wu and M. Zemcov},
journal= {arXiv preprint arXiv:0901.4334},
year = {2009}
}
备注
5 pages, 5 figures, updated beam model, full data release available online (see text), accepted to ApJL