Spider optimization. II. Optical, magnetic, and foreground effects

D. T. O'Dea, P. A.R. Ade, M. Amiri, S. J. Benton, J. J. Bock, J. R. Bond, J. A. Bonetti, S. Bryan, B. Burger, H. C. Chiang, C. N. Clark, C. R. Contaldi, B. P. Crill, G. Davis, O. Doré, M. Farhang, J. P. Filippini, L. M. Fissel, A. A. Fraisse, N. N. GandiloS. Golwala, J. E. Gudmundsson, M. Hasselfield, G. Hilton, W. Holmes, V. V. Hristov, K. Irwin, W. C. Jones, C. L. Kuo, C. J. MacTavish, P. V. Mason, T. E. Montroy, T. A. Morford, C. B. Netterfield, A. S. Rahlin, C. Reintsema, J. E. Ruhl, M. C. Runyan, M. A. Schenker, J. A. Shariff, J. D. Soler, A. Trangsrud, C. Tucker, R. S. Tucker, A. D. Turner, D. Wiebe

Research output: Contribution to journalArticle

10 Scopus citations

Abstract

SPIDER is a balloon-borne instrument designed to map the polarization of the cosmic microwave background (CMB) with degree-scale resolution over a large fraction of the sky. SPIDER's main goal is to measure the amplitude of primordial gravitational waves through their imprint on the polarization of the CMB if the tensor-to-scalar ratio, r, is greater than 0.03. To achieve this goal, instrumental systematic errors must be controlled with unprecedented accuracy. Here, we build on previous work to use simulations of SPIDER observations to examine the impact of several systematic effects that have been characterized through testing and modeling of various instrument components. In particular, we investigate the impact of the non-ideal spectral response of the half-wave plates, coupling between focal-plane components and Earth's magnetic field, and beam mismatches and asymmetries. We also present a model of diffuse polarized foreground emission based on a three-dimensional model of the Galactic magnetic field and dust, and study the interaction of this foreground emission with our observation strategy and instrumental effects. We find that the expected level of foreground and systematic contamination is sufficiently low for SPIDER to achieve its science goals.

Original languageEnglish (US)
Article number63
JournalAstrophysical Journal
Volume738
Issue number1
DOIs
StatePublished - Sep 1 2011

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

Keywords

  • cosmic background radiation
  • cosmology: observations
  • gravitational waves
  • methods: analytical
  • methods: data analysis
  • polarization

Fingerprint Dive into the research topics of 'Spider optimization. II. Optical, magnetic, and foreground effects'. Together they form a unique fingerprint.

  • Cite this

    O'Dea, D. T., Ade, P. A. R., Amiri, M., Benton, S. J., Bock, J. J., Bond, J. R., Bonetti, J. A., Bryan, S., Burger, B., Chiang, H. C., Clark, C. N., Contaldi, C. R., Crill, B. P., Davis, G., Doré, O., Farhang, M., Filippini, J. P., Fissel, L. M., Fraisse, A. A., ... Wiebe, D. (2011). Spider optimization. II. Optical, magnetic, and foreground effects. Astrophysical Journal, 738(1), [63]. https://doi.org/10.1088/0004-637X/738/1/63