The CMB Power Spectrum from the Background Emission Anisotropy Scanning Telescope (BEAST) Experiment

Ian J. O'Dwyer; Marco Bersanelli; Jeffrey Childers; Newton Figueiredo; Doron Halevi; Gregory G. Huey; Philip M. Lubin; Davide Maino; Nazzareno Mandolesi; Joshua Marvil; Peter R. Meinhold; Jorge Mejia; Paolo Natoli; Hugh O'Neill; Agenor Pina; Michael D. Seiffert; Nathan C. Stebor; Camilo Tello; Thyrso Villela; Benjamin D. Wandelt; Brian Williams; Carlos Alexandre Wuensche

arXiv · astro-ph/0312610

The CMB Power Spectrum from the Background Emission Anisotropy Scanning Telescope (BEAST) Experiment

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Abstract

The Background Emission Anisotropy Scanning Telescope (BEAST) is a 2.2m off-axis telescope with an 8 element mixed Q (38-45GHz) and Ka (26-36GHz) band focal plane, designed for balloon borne and ground based studies of the Cosmic Microwave Background. Here we present the Cosmic Microwave Background (CMB) angular power spectrum calculated from 682 hours of data observed with the BEAST instrument. We use a binned pseudo-Cl estimator (the MASTER method). We find results that are consistent with other determinations of the CMB anisotropy for angular wavenumber l between 100 and 600. We also perform cosmological parameter estimation. The BEAST data alone produces a good constraint on Omega_k = 1-Omega_tot=-0.074 +/- 0.070, consistent with a flat Universe. A joint parameter estimation analysis with a number of previous CMB experiments produces results consistent with previous determinations.

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Ian J. O'Dwyer, Marco Bersanelli, Jeffrey Childers, Newton Figueiredo, Doron Halevi, Gregory G. Huey, Philip M. Lubin, Davide Maino, Nazzareno Mandolesi, Joshua Marvil, Peter R. Meinhold, Jorge Mejia, Paolo Natoli, Hugh O'Neill, Agenor Pina, Michael D. Seiffert, Nathan C. Stebor, Camilo Tello, Thyrso Villela, Benjamin D. Wandelt, Brian Williams, Carlos Alexandre Wuensche. 2003-12-23. The CMB Power Spectrum from the Background Emission Anisotropy Scanning Telescope (BEAST) Experiment. https://arxiv.org/abs/astro-ph/0312610

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