POKER: Estimating the power spectrum of diffuse emission with complex masks and at high angular resolution

TL;DR

POKER is a new high-resolution power spectrum estimator based on the MASTER algorithm, designed for complex masks and applicable to various diffuse emissions in astrophysical observations.

Contribution

It introduces a discrete-space implementation of the MASTER algorithm suitable for high-resolution maps with complex masking.

Findings

Effective at handling complex masks in high-resolution data

Applicable to both Galactic and cosmological diffuse emissions

Compatible with current and future infrared to sub-mm observations

Abstract

We describe the implementation of an angular power spectrum estimator in the flat sky approximation. POKER (P. Of k EstimatoR) is based on the MASTER algorithm developped by Hivon and collaborators in the context of CMB anisotropy. It works entirely in discrete space and can be applied to arbitrary high angular resolution maps. It is therefore particularly suitable for current and future infrared to sub-mm observations of diffuse emission, whether Galactic or cosmological.