%0 Journal Article
%T First results from the BOOMERanG experiment
%A P. de Bernardis
%A P. A. R. Ade
%A J. J. Bock
%A J. R. Bond
%A J. Borrill
%A A. Boscaleri
%A K. Coble
%A B. P. Crill
%A G. De Gasperis
%A G. De Troia
%A P. C. Farese
%A P. G. Ferreira
%A K. Ganga
%A M. Giacometti
%A E. Hivon
%A V. V. Hristov
%A A. Iacoangeli
%A A. H. Jaffe
%A A. E. Lange
%A L. Martinis
%A S. Masi
%A P. Mason
%A P. D. Mauskopf
%A A. Melchiorri
%A L. Miglio
%A T. Montroy
%A C. B. Netterfield
%A E. Pascale
%A F. Piacentini
%A D. Pogosyan
%A F. Pongetti
%A S. Prunet
%A S. Rao
%A G. Romeo
%A J. E. Ruhl
%A F. Scaramuzzi
%A D. Sforna
%A N. Vittorio
%J Physics
%D 2000
%I arXiv
%R 10.1063/1.1363510
%X We report the first results from the BOOMERanG experiment, which mapped at 90, 150, 240 and 410 GHz a wide (3%) region of the microwave sky with minimal local contamination. From the data of the best 150 GHz detector we find evidence for a well defined peak in the power spectrum of temperature fluctuations of the Cosmic Microwave Background, localized at $\ell = 197 \pm 6$, with an amplitude of $(68 \pm 8) \mu K_{CMB}$. The location, width and amplitude of the peak is suggestive of acoustic oscillations in the primeval plasma. In the framework of inflationary adiabatic cosmological models the measured spectrum allows a Bayesian estimate of the curvature of the Universe and of other cosmological parameters. With reasonable priors we find $\Omega = (1.07 \pm 0.06)$ and $n_s = (1.00 \pm 0.08)$ (68%C.L.) in excellent agreement with the expectations from the simplest inflationary theories. We also discuss the limits on the density of baryons, of cold dark matter and on the cosmological constant.
%U http://arxiv.org/abs/astro-ph/0011469v1