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Experiment-specific cosmic microwave background calculations made easier - Approximation formula for smoothed delta T/T windowsSimple and easy to implement elementary function approximations are introduced to the spectral window functions needed in calculations of model predictions of the cosmic microwave backgrond (CMB) anisotropy. These approximations allow the investigator to obtain model delta T/T predictions in terms of single integrals over the power spectrum of cosmological perturbations and to avoid the necessity of performing the additional integrations. The high accuracy of these approximations is demonstrated here for the CDM theory-based calculations of the expected delta T/T signal in several experiments searching for the CMB anisotropy.
Document ID
19930057661
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Gorski, Krzysztof M. (Universities Space Research Association; NASA, Goddard Space Flight Center Greenbelt, MD; Kyoto Univ., Uji, Japan)
Date Acquired
August 16, 2013
Publication Date
June 20, 1993
Publication Information
Publication: Astrophysical Journal, Part 2 - Letters
Volume: 410
Issue: 2
ISSN: 0004-637X
Subject Category
ASTROPHYSICS
Distribution Limits
Public
Copyright
Other