Dipole Straylight Contamination and Low Multipoles
Astrophysics
2007-05-23 v1
Abstract
Kinematic dipole signal originates from the motion of the Sun with respect to the CMB rest frame. It is a remarkable signal, two orders of magnitude larger than the observed pattern of CMB anisotropies. Therefore the dipole subtraction from the main beam is of primary importance. But what happens to the dipole signal entering the main spillover (i.e. the most relevant far antenna pattern feature, responsible for the bulk of the straylight effect)? We present here an analytical and statistical study of this systematic effect for a spinning space-mission like {\sc Planck}.
Cite
@article{arxiv.astro-ph/0607413,
title = {Dipole Straylight Contamination and Low Multipoles},
author = {Alessandro Gruppuso and Carlo Burigana and Fabio Finelli},
journal= {arXiv preprint arXiv:astro-ph/0607413},
year = {2007}
}
Comments
4 pages, 2 figures. To appear in the proceedings of International Conference on CMB and Physics of the Early Universe, Ischia, Italy, 20-22 Apr 2006