COMPASS: An Upper Limit on Cosmic Microwave Background Polarization at an Angular Scale of 20'
Abstract
COMPASS is an on-axis 2.6 m telescope coupled to a correlation polarimeter operating at a wavelength of 1 cm. The entire instrument was built specifically for cosmic microwave background (CMB) polarization studies. We report here on observations of 2001 February-April using this system. We set an upper limit on E-mode polarized anisotropies of 1036 μK2 (95% confidence limit) in the l range 93-555.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- August 2004
- DOI:
- 10.1086/421837
- arXiv:
- arXiv:astro-ph/0308309
- Bibcode:
- 2004ApJ...610..625F
- Keywords:
-
- Cosmology: Cosmic Microwave Background;
- Cosmology: Observations;
- Instrumentation: Polarimeters;
- Astrophysics
- E-Print:
- Submitted to ApJ 8/19/2003