Abstract : The E and B experiment (EBEX) is a balloon-borne telescope designed to measure the polar-
ization of the cosmic microwave background radiation as well as that from Galactic dust. The
instrument is equipped with a 1.5 meter aperture Gregorian-Dragone telescope, providing an
8' beam at three frequency bands centered on 150, 250 and 410 GHz. Polarimetry is achieved
by rotating an achromatic half-wave plate on a superconducting magnetic bearing. In January
2013, EBEX completed 11 days of observations in a
ight over Antarctica covering 6000 square
degrees of the sky. This marks the rst time that arrays with about 1000 transition-edge sensor
bolometers have made science observations on a balloon-borne platform. These proceedings
describe the EBEX instrument, the science
ight and the status of the data analysis.
1 I
Joy Didier, Asad M. Aboobaker, Peter Ade, Francois Aubin, Carlo Baccigalupi, et al.. EBEX: The E and B Experiment. XLIXth Rencontres de Moriond – Cosmology, Mar 2014, La Thuile, Italy. pp.41-44. ⟨in2p3-01118723⟩