PLANCK: Systematic effects induced by periodic fluctuations of arbitrary shape

¹ IFC-CNR, Via Bassini 15, 20133 Milan, Italy
² Università degli Studi di Milano, Via Celoria 16, 20133 Milan, Italy
³ TESRE-CNR, Via Gobetti 101, Bologna, Italy
⁴ Osservatorio Astronomico di Trieste, via G. B. Tiepolo 11, 34131 Trieste, Italy
⁵ Jet Propulsion Laboratories, Pasadena, USA

Corresponding author: A. Mennella, daniele@ifctr.mi.cnr.it

Received: 2 November 2001
Accepted: 4 January 2002

Abstract

A fundamental requirement in the new generation of high resolution Cosmic Microwave Background imaging experiments is a strict control of systematic errors that must be kept at μK level in the final maps. Some of these errors are of celestial origin, while others will be generated by periodic fluctuations of the satellite environment. These environment instabilities will cause fluctuations in the measured signal output thus generating correlated effects in the reconstructed maps. In this paper we present an analytical study of the impact of periodic signal fluctuations on the measured sky maps produced by the Planck survey. In particular we show how it is possible to estimate analytically the damping factor of the peak-to-peak amplitude of the fluctuation at the instrument output after the projection in the final maps.