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Your search keyword '"G. De Troia"' showing total 3 results
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3 results on '"G. De Troia"'

1. Scanning polarimeters for measurements of CMB polarization

Author

G. De Troia, P. de Bernardis, Silvia Masi, F. Piacentini, Giampaolo Pisano, and P. Natoli

Subjects
Physics, Optics, business.industry, law, Cosmic microwave background, Bolometer, Cosmic background radiation, Polarimeter, business, Polarization (waves), law.invention
Abstract

The polarization status of the Cosmic Microwave Background (CMB) is still undetected. The BOOMERanG payload has been reconfigured as a scanning polarimeter, and its launch is planned for 2002. The same experimental approach has been selected for Planck-HFI and other experiments. Here we discuss some issues related to this methodology, such as the level of sensitivity required, the effects of instrumental cross-polarization and its measurement, and the best scan strategy.

Published
2002

2. Noise properties of the BOOMERANG instrument

Author

J. R. Bond, G. De Troia, M. Giacometti, Simon Prunet, B. P. Crill, J. Borrill, A. Boscaleri, Calvin B. Netterfield, Dmitry Pogosyan, F. Piacentini, E. Hivon, Carlo R. Contaldi, Philip Daniel Mauskopf, G. Polenta, Peter Mason, Alessandro Melchiorri, K. Coble, G. Romeo, Peter A. R. Ade, Silvia Masi, J. J. Bock, W. C. Jones, A. Iacoangeli, T. E. Montroy, Enzo Pascale, F. Pongetti, K. Ganga, L. Martinis, Andrew E. Lange, P. C. Farese, Andrew H. Jaffe, P. de Bernardis, Francesco Scaramuzzi, J. E. Ruhl, V. V. Hristov, DePetris, M., and Gervasi, M.

Subjects
Physics, Noise, Calibration (statistics), BOOMERanG experiment, Electronic engineering, Astronomy, Sensitivity (control systems)
Abstract

In this paper we report a short description of the BOOMERANG experiment explaining his scientific goal and the technologies implied. We concentrate then on the analysis of the noise properties discussing in particular the scan synchronous noise. Finally we present the calibration technique and the sensitivity of all the channels.

Published
2002
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3. Images of the early universe from the BOOMERanG experiment

Author

J. J. Bock, B. P. Crill, E. Hivon, Pedro G. Ferreira, Andrew E. Lange, Nicola Vittorio, Philip Daniel Mauskopf, T. E. Montroy, J. Borrill, Silvia Masi, G. Romeo, D. Sforna, F. Piacentini, Andrew H. Jaffe, L. Miglio, Dmitry Pogosyan, Simon Prunet, P. Ade, A. Iacoangeli, P. C. Farese, Enzo Pascale, V. V. Hristov, G. De Troia, G. Polenta, M. Giacometti, Francesco Scaramuzzi, G. de Gasperis, K. Ganga, P. de Bernardis, S. Rao, A. Boscaleri, Alessandro Melchiorri, Calvin B. Netterfield, J. E. Ruhl, L. Martinis, J. R. Bond, Peter Mason, K. Coble, Wheeler, J. C., and Martel, H.

Subjects
Big Bang, Physics, Age of the universe, media_common.quotation_subject, BOOMERanG experiment, Astronomy, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics, Particle horizon, Universe, Metric expansion of space, De Sitter universe, Flatness problem, media_common
Abstract

The CMB is the fundamental tool to study the properties of the early universe and of the universe at large scales. In the framework of the Hot Big Bang model, when we look to the CMB we look back in time to the end of the plasma era, at a redshift ~ 1000, when the universe was ~ 50000 times younger, ~ 1000 times hotter and ~ 10^9 times denser than today. The image of the CMB can be used to study the physical processes there, to infer what happened before, and also to study the background geometry of our Universe.

Published
2001
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