CMB likelihood functions for beginners and experts
作者:
Andrew H. Jaffe,
J. R. Bond,
P. G. Ferreira,
L. E. Knox,
期刊:
AIP Conference Proceedings
(AIP Available online 1999)
卷期:
Volume 476,
issue 1
页码: 249-365
ISSN:0094-243X
年代: 1999
DOI:10.1063/1.59329
出版商: AIP
数据来源: AIP
摘要:
Although the broad outlines of the appropriate pipeline for cosmological likelihood analysis with CMB data has been known for several years, only recently have we had to contend with the full, large-scale, computationally challenging problem involving both highly-correlated noise and extremely large datasets(N>1000).In this talk we concentrate on the beginning and end of this process. First, we discuss estimating the noise covariance from the data itself in a rigorous and unbiased way; this is essentially an iterated minimum-variance mapmaking approach. We also discuss the unbiased determination of cosmological parameters from estimates of the power spectrum or experimental bandpowers. ©1999 American Institute of Physics.
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