Crinkles in the last scattering surface: Non-Gaussianity from inhomogeneous recombination
Crinkles in the last scattering surface: Non-Gaussianity from inhomogeneous recombination
复制标题
最后一个散射表面的皱纹:不均匀复合导致的非高斯性
DOI:
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发表时间:
2008
期刊:
影响因子:
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通讯作者:
B. Wandelt
中科院分区:
文献类型:
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作者:
R. Khatri;B. Wandelt
Theperturbationsin theelectron num berdensityduringrecom bination contributestothecosm ic m icrowave background bispectrum through second order term s. Perturbations in the electron density can be a factor of � 5 larger than the baryon density uctuations on large scales as shown in the calculationsby Novosyadlyj. Thisraisesthe possibility thatthe contribution to the bispectrum arising from perturbationsin the opticaldepth m ay be non-negligible. W e calculate �