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Mapping the Dark Matter through the CMB Damping Tail

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arxiv astro-ph/0105424 v2 pith:464VLQVH submitted 2001-05-23 astro-ph

classification astro-ph
keywords dampingdarkdegreehighlensingmassmatterscale
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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 ~100 Mpc/h comoving. We introduce a new algorithm for mass reconstruction which optimally utilizes information from the weak lensing of CMB anisotropies in the damping tail. It can ultimately map individual degree scale mass structures with high signal-to-noise. To achieve this limit an experiment must produce a high signal-to-noise, foreground-free CMB map of arcminute scale resolution, specifically with a FWHM beam of < 5' and a noise level of < 15 (10^-6-arcmin) or 41 (uK-arcmin).

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Faster CMB lensing with control variates

    astro-ph.CO 2026-05 unverdicted novelty 6.0 of 10

    A control variate technique using differenced estimates from realistic masked and isotropic simulations reduces the computational cost of CMB lensing bias calculations by a factor of three to five.

  2. Impact of Galactic non-Gaussian foregrounds on CMB lensing measurements

    astro-ph.CO 2025-05 conditional novelty 6.0 of 10

    Galactic dust bias on CMB lensing amplitude is below 0.3σ for ACT but can exceed 0.3σ for Simons Observatory with wide masks, depending on the dust model.

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