1.5k citations · 5.1k across the 71 of their papers we have counts for
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A fast map-making preconditioner for regular scanning patterns
Sigurd Næss, Thibaut Louis
High-resolution Maximum Likelihood map-making of the Cosmic Microwave Background is usually performed using Conjugate Gradients with a preconditioner that ignores noise correlation…
Lensing simulations by Taylor expansion -- not so inefficient after all
Sigurd K. Næss, Thibaut Louis
Cosmic Microwave Background lensing simulation by Taylor expansion has long been considered impractical due to slow convergence, but a recent flat-sky implementation shows that a s…
Lensing Simulation and Power Spectrum Estimation for High Resolution CMB Polarization Maps
Thibaut Louis, Sigurd Næss, Sudeep Das +2
We present efficient algorithms for CMB lensing simulation and power spectrum es- timation for flat-sky CMB polarization maps. We build a pure B-mode estimator to remedy E to B lea…
CMB likelihood approximation for banded probability distributions
E. Gjerløw, K. Mikkelsen, H. K. Eriksen +7
We investigate sets of random variables that can be arranged sequentially such that a given variable only depends conditionally on its immediate predecessor. For such sets, we show…