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Abstract

Proceedings of the Particle Physics and Early Universe Conference (PPEUC).
For this paper: postscript up PPEUC CMB index next 1 Introduction...

Planck map reconstructions with MEM

A.W. Jones & M.P. Hobson

Mullard Radio Astronomy Observatory, Cavendish Laboratory, Madingley Road, Cambridge, CB3 0HE, UK

Abstract:

The maximum entropy method (MEM) presented in Hobson & Jones (1998, these proceedings) is applied to simulated observations by the proposed Planck Surveyor satellite. The simulations include emission from the CMBR, the kinetic and thermal Sunyaev--Zel'dovich (SZ) effects from galaxy clusters, as well as Galactic dust, free--free and synchrotron emission. We find that the MEM technique performs well and produces faithful reconstructions of the main input components. The method is also compared with traditional Wiener filtering and is shown to produce consistently better results, particularly in the recovery of the thermal SZ effect. The analysis presented here is intended to complement the analysis presented in Hobson et al. (1998) which showed the results for a CDM realisation of the CMB instead of the string simulation used here.

PPEUC Proceedings
Tue Feb 24 10:52:49 GMT 1998