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Your search keyword '"Ramponi, M."' showing total 2 results
Start Over Author "Ramponi, M." Topic cosmic microwave background
2 results on '"Ramponi, M."'

1. The Sky Polarization Observatory

Author

Cortiglioni, S., Bernardi, G., Carretti, E., Casarini, L., Cecchini, S., Macculi, C., Ramponi, M., Sbarra, C., Monari, J., Orfei, A., Poloni, M., Poppi, S., Boella, G., Bonometto, S., Colombo, L., Gervasi, M., Sironi, G., Zannoni, M., Baralis, M., and Peverini, O.A.

Subjects
*OPTICAL polarization, *METAPHYSICAL cosmology, *SPACE stations, *OBSERVATORIES
Abstract

The Sky Polarization Observatory (SPOrt) is an ASI-funded experiment specifically designed to measure the sky polarization at 22, 32 and 90 GHz, which was selected in 1997 by ESA to be flown on the International Space Station. Starting in 2006 and for at least 18 months, it will be taking direct and simultaneous measurements of the Stokes parameters Q and U at 660 sky pixels, with FWHM=7°. Due to development efforts over the past few years, the design specifications have been significantly improved with respect to the first proposal. Here we present an up-to-date description of the instrument, which now warrants a pixel sensitivity of 1.7 μK for the polarization of the cosmic background radiation, assuming two years of observations. We discuss SPOrt scientific goals in the light of WMAP results, in particular in connection with the emerging double-reionization cosmological scenario. [Copyright &y& Elsevier]

Published
2004
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2. BaR-SPOrt experiment: measuring the CMBP E-mode power spectrum from Dome C

Author

M. Baralis, S. Cecchini, E. Carretti, Massimo Gervasi, M. V. Sazhin, Giuseppe Virone, L. P. L. Colombo, C. Sbarra, Jader Monari, M. De Petris, M. Ramponi, Stefano Cortiglioni, Sergio Poppi, Luciano Casarini, Gianni Bernardi, P. de Bernardis, Silvia Masi, O. A. Peverini, V. Natale, M. Poloni, G. Sironi, Silvio A. Bonometto, R. Fabbri, Renzo Nesti, A. Boscaleri, G. Ventura, R. Tascone, Luciano Nicastro, Claudio Macculi, M. Zannoni, E. N. Vinyajkin, Carretti, E, Cortiglioni, S, Bernardi, G, Casarini, L, Cecchini, S, Macculi, C, Ramponi, M, Sbarra, C, Ventura, G, Monari, J, Poloni, M, Poppi, S, Baralis, M, Peverini, O, Tascone, R, Virone, G, Zannoni, M, Bonometto, S, Colombo, L, Gervasi, M, Sironi, G, Fabbri, R, Natale, V, Nesti, R, Nicastro, L, de Bernardis, P, Masi, S, de Petris, M, Boscaleri, A, Sazhin, M, and Vinyajkin, E

Subjects
Physics, Current configuration, media_common.quotation_subject, Cosmic microwave background, Astrophysics::Instrumentation and Methods for Astrophysics, General Engineering, Spectral density, Astronomy and Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics, Low frequency, Polarization (waves), Dust emissions, Cosmology, Synchrotron emission, Space and Planetary Science, Sky, Cosmic Microwave Background, POLARIZATION, CMB, COSMOLOGY, Multipole expansion, Astrophysics::Galaxy Astrophysics, media_common
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.

Published
2005

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