Abstract
In this paper, we show how the rescattering of cosmic microwave background photons after cosmic reionization can give a significant linear contribution to the temperature–matter cross-correlation measurements. These anisotropies, which arise via a late-time Doppler effect, are on scales much larger than the typical scale of non-linear effects at reionization; they can contribute to degree scale cross-correlations and could affect the interpretation of similar correlations resulting from the integrated Sachs–Wolfe effect. While expected to be small at low redshifts, these correlations can be large given a probe of the density at high redshift, and so could be a useful probe of the cosmic reionization history.
Original language | English |
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Pages (from-to) | 819-826 |
Number of pages | 8 |
Journal | Monthly Notices of the Royal Astronomical Society |
Volume | 381 |
Issue number | 2 |
DOIs | |
Publication status | Published - 2007 |