Speaker: Daisuke Yamauchi (RESCEU)

Title: CMB ISW-lensing bispectrum from cosmic strings

We study the effect of weak lensing by cosmic strings on the CMB anisotropies.
In the presence of the cross correlation between the temperature fluctuations
and the lensing potential, the non-vanishing bispectrum will appear.
A cosmic string network is expected to produce the ISW-lensing bispectrum.
In developing an analytic method to calculate the correlations between strings,
we give the explicit expression for the auto-power spectrum for the ISW effect
due to the cosmic string network and the cross-correlation power spectrum
between the ISW effect and the lensing potential induced by the cosmic string network.

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Last-modified: 2013-11-20 (水) 11:11:56 (2709d)