Author

A. Shafieloo

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Preprint Aug 2026

The Primordial power spectrum from the largest to smallest CMB scales

We reconstruct the primordial power spectrum (PPS) across the full range of cosmological scales accessible to Cosmic Microwave Background (CMB) observations. Using the Modified Richardson--Lucy algorithm, we perform free-form reconstructions through deconvolution of Planck PR3 and PR4, Atacama Cosmology Telescope (ACT)...

Debabrata Chandra, D. K. Hazra, A. Shafieloo et al. · 1 citation

Review Sep 2026

Finding the distribution of matter using lenses - II: deconvolution-based reconstruction with 3x2pt measurements

We present a deconvolution-based framework for testing scale-dependent departures of the late-time matter power spectrum from a fiducial cosmological model using $3\times2$pt measurements. We introduce a free-form scale-dependent modulation $A(k)$ of the fiducial nonlinear matter power spectrum and construct the linear...

Jun-Qian Jiang, Ajoy Dawn, D. K. Hazra et al. · 0 citations

Preprint Sep 2026

Finding the distribution of matter using lenses - I: deconvolution-based reconstruction with CMB lensing

The matter power spectrum is one of the primary statistical descriptors of the large-scale distribution of matter in the Universe and provides a powerful probe of cosmic structure formation. Measurements of cosmic microwave background (CMB) lensing offer an integrated view of the matter distribution over a wide range o...

Ajoy Dawn, Jun-Qian Jiang, D. K. Hazra et al. · 0 citations