Beyond the Power Spectrum: Primordial and Secondary Non-Gaussianity in the Microwave Background

被引：0
作者：
Smith, Kendrick M. [1 ]
机构：
[1] Princeton Univ, Dept Astrophys Sci, Princeton, NJ 08544 USA
来源：
NEW HORIZONS IN ASTRONOMY: FRANK N BASH SYMPOSIUM 2009 | 2010年 / 432卷
关键词：
GRAVITY-WAVES; PERTURBATIONS; ANISOTROPIES; POLARIZATION; PROBE;
D O I：
暂无
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Cosmic microwave background observations are most commonly analyzed by estimating the power spectrum. In the limit where the CMB statistics are perfectly Gaussian, this extracts all the information, but the CMB also contains detectable non-Gaussian contributions from secondary, and possibly primordial, sources. We review possible sources of CMB non-Gaussianity and describe statistical techniques which are optimized for measuring them, complementing the power spectrum analysis. The machinery of N-point correlation functions provides a unifying framework for optimal estimation of primordial non-Gaussian signals or gravitational lensing. We review recent results from applying these estimators to data from the WMAP satellite mission.
引用
收藏
页码：147 / 162
页数：16
相关论文
共 46 条
  • [1] Gauge-invariant second-order perturbations and non-Gaussianity from inflation
    Acquaviva, V
    Bartolo, N
    Matarrese, S
    Riotto, A
    [J]. NUCLEAR PHYSICS B, 2003, 667 (1-2) : 119 - 148
  • [2] First season QUaD CMB temperature and polarization power spectra
    Ade, P.
    Bock, J.
    Bowden, M.
    Brown, M. L.
    Cahill, G.
    Carlstrom, J. E.
    Castro, P. G.
    Church, S.
    Culverhouse, T.
    Friedman, R.
    Ganga, K.
    Gear, W. K.
    Hinderks, J.
    Kovac, J.
    Lange, A. E.
    Leitch, E.
    Melhuish, S. J.
    Murphy, J. A.
    Orlando, A.
    Schwarz, R.
    O'Sullivan, C.
    Piccirillo, L.
    Pryke, C.
    Rajguru, N.
    Rusholme, B.
    Taylor, A. N.
    Thompson, K. L.
    Wu, E. Y. S.
    Zemcov, M.
    [J]. ASTROPHYSICAL JOURNAL, 2008, 674 (01) : 22 - 28
  • [3] DBI in the sky: Non-Gaussianity from inflation with a speed limit
    Alishahiha, M
    Silverstein, E
    Tong, D
    [J]. PHYSICAL REVIEW D, 2004, 70 (12): : 15
  • [4] Ghost inflation
    Arkani-Hamed, N
    Creminelli, P
    Mukohyama, S
    Zaldarriaga, M
    [J]. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS, 2004, (04): : 1 - 18
  • [5] Bernardeau F, 1997, ASTRON ASTROPHYS, V324, P15
  • [6] Lensed CMB power spectra from all-sky correlation functions
    Challinor, A
    Lewis, A
    [J]. PHYSICAL REVIEW D, 2005, 71 (10):
  • [7] The NRAO VLA Sky Survey
    Condon, JJ
    Cotton, WD
    Greisen, EW
    Yin, QF
    Perley, RA
    Taylor, GB
    Broderick, JJ
    [J]. ASTRONOMICAL JOURNAL, 1998, 115 (05) : 1693 - 1716
  • [8] Imprint of reionization on the cosmic microwave background bispectrum
    Cooray, A
    Hu, W
    [J]. ASTROPHYSICAL JOURNAL, 2000, 534 (02) : 533 - 550
  • [9] A single-field consistency relation for the three-point function
    Creminelli, P
    Zaldarriaga, M
    [J]. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS, 2004, (10): : 101 - 107
  • [10] Limits on non-gaussianities from WMAP data
    Creminelli, Paolo
    Nicolis, Alberto
    Senatore, Leonardo
    Tegmark, Max
    Zaldarriaga, Matias
    [J]. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS, 2006, (05):
12345