Mapping the Dark Matter through the Cmb Damping Tail
نویسنده
چکیده
The lensing of CMB photons by intervening large-scale structure leaves a characteristic imprint on its arcminute-scale anisotropy that can be used to map the dark matter distribution in projection on degree scales or ∼ 100h Mpc comoving. We introduce a new algorithm for mass reconstruction which optimally utilizes information from the weak lensing of CMB anisotropies in the damping tail. Individual degree-scale mass structures can be recovered with high signal-to-noise from a foreground-free CMB map of arcminute scale resolution, specifically with a FWHM beam < 5 and a noise level < 15 (10-arcmin) or 41 (μK-arcmin). Subject headings: cosmic microwave background – dark matter — large scale structure of universe
منابع مشابه
Mapping the Dark Matter through the Cosmic Microwave Background Damping Tail
The lensing of cosmic microwave background (CMB) photons by intervening large-scale structure leaves a characteristic imprint on its arcminute-scale anisotropy that can be used to map the dark matter distribution in projection on degree scales or ∼100 h 1 Mpc comoving. We introduce a new algorithm for mass reconstruction that optimally utilizes information from the weak lensing of CMB anisotrop...
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