The BaR-SPOrt experiment: measuring the CMBP E-mode power spectrum from Dome C

¹ IASF/CNR Bologna, Via Gobetti 101, 40129 Bologna, Italy
² IRA/CNR Bologna, Via Gobetti 101, 40129 Bologna, Italy
³ IEIIT/CNR Torino, C.so Duca degli Abruzzi 24, 10129 Torino, Italy
⁴ IASF/CNR Milano, Via Bassini 15, 20133 Milano, Italy
⁵ Dip. di Fisica, Universitá di Milano-Bicocca, P.za della Scienza 3, 20126 Milano, Italy
⁶ Dip. di Fisica, Universitá di Firenze, Via Sansone 1, 50019 Sesto Fiorentino (FI), Italy
⁷ IRA/CNR Firenze, Largo E. Fermi 5, 50125 Firenze, Italy
⁸ IASF/CNR Palermo, Via La Malfa 153, 90146 Palermo, Italy
⁹ Universitá di Roma la Sapienza, P.le A. Moro 2, 00185 Roma, Italy
¹⁰ IFAC/CNR Firenze, Via Panciatichi 64, 50127, Firenze, Italy
¹¹ Schternberg Astronomical Institute, Moscow State University, Moscow 119899, Russia
¹² NIRFI, 25 B. Pecherskaya St., Nizhnij Novgorod 603600/GSP-51, Russia

Corresponding author: carretti@bo.iasf.cnr.it

Abstract

The BaR-SPOrt experiment is designed to measure the E-mode power spectrum of the Cosmic Microwave Background Polarization (CMBP) in the multipole range 50 < l < 1000. In the current configuration at 32 GHz it can explore up to l = 400. Recent low frequency observations of the target region show that the synchrotron emission should not contamine the CMBP already at 32 GHz. A 6-month observation of a 6° × 6° sky area during the polar night, in ideal environmental conditions, will allow the Italian-French collaboration to both measure the E–mode power spectrum with appropriate sensitivity and perform important tests of the anomalous dust emission. The BaR-SPOrt 32 GHz instrument, now under test and ready for operations by Spring 2005, is proposed for 1–2 years Winter operations at Dome C.