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Advanced methods for cosmic microwave background data analysis: the big N^3 and how to beat it
Benjamin D. Wandelt
In this talk I propose the first fast methods which can analyze CMB data taking into account correlated noise, arbitrary beam shapes, non-uniform distribution of integration time o…
Planck LFI: Comparison Between Galaxy Straylight Contamination and other Systematic Effects
C. Burigana, D. Maino, K. M. Górski +7
The straylight contamination due to the Galactic emission (GSC, Galaxy Straylight Contamination) entering at large angles from the antenna centre direction may be one of the most c…
Fast Convolution on the Sphere
Benjamin D. Wandelt, Krzysztof M. Gorski
We propose fast, exact and efficient algorithms for the convolution of two arbitrary functions on the sphere which speed up computations by a factor \order{\sqrt{N}} compared to pr…
Self-Interacting Dark Matter
Benjamin D. Wandelt, Romeel Dave, Glennys R. Farrar +3
Spergel and Steinhardt have recently proposed the concept of dark matter with strong self-interactions as a means to address numerous discrepancies between observations of dark mat…
Halo Properties in Cosmological Simulations of Self-Interacting Cold Dark Matter
Romeel Davé, David N. Spergel, Paul J. Steinhardt +1
We present a comparison of halo properties in cosmological simulations of collisionless cold dark matter (CDM) and self-interacting dark matter (SIDM) for a range of dark matter cr…
Multiparameter estimation with the Pseudo-C_l method
Benjamin D. Wandelt, Krzysztof M. Gorski, Eric Hivon
We apply the Pseudo-C_l formalism to obtain an unbiased, approximate method for efficient simultaneous estimation of several cosmological parameters from large, almost full-sky cos…