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    Please use this identifier to cite or link to this item: http://asiair.asia.edu.tw/ir/handle/310904400/8157


    Title: Gravity wave-induced polarization of the cosmic microwave background radiation
    Authors: K.L.Ng;K.W. Ng
    Contributors: Department of Bioinformatics
    Keywords: ANISOTROPY;BACKGROUND RADIATION;COSMIC RAYS;GRAVITY WAVES;POLARIZATION (WAVES);COSMIC BACKGROUND EXPLORER SATELLITE;COSMOLOGY;IONIZATION;MATHEMATICAL MODELS;PERTURBATION;PHOTONS
    Date: 1995
    Issue Date: 2010-03-19 16:24:55 (UTC+8)
    Publisher: Asia University
    Abstract: We discuss the contribution of pure gravitational waves to the cosmic microwave background radiation (CMBR) anisotropy and polarization. It is found that the large-scale polarization of the CMBR is less than 1% of the anisotropy for an universe with standard recombination. The effect of early matter reionization will enhance the CMBR polarization to a 10% level. We have also computed the CMBR polarization for an universe having high baryon density and gravitational waves with a tilted spectrum and found that further enhancement of the polarization is possible. We conclude that measuring the polarization of the CMBR on large angular scales can probe the ionization history of the early universe and set constraints on cosmological models.
    Relation: The Astrophysical Journal 445: 521-525
    Appears in Collections:[生物資訊與醫學工程學系 ] 期刊論文

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