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Precision CMB Polarization from Dome-C: the BRAIN experiment

Published online by Cambridge University Press:  05 January 2006

M. Giard ,
F. Casoli ,
F. Paletou ,
S. Masi ,
P. de Bernardis ,
C. Giordano ,
F. Nati ,
F. Piacentini ,
G. Polenta  and
M. Veneziani
...Show all authors
S. Masi
Affiliation:
Department of Physics, University of Rome “La Sapienza”, Italy
P. de Bernardis
Affiliation:
Department of Physics, University of Rome “La Sapienza”, Italy
C. Giordano
Affiliation:
Department of Physics, University of Rome “La Sapienza”, Italy
F. Nati
Affiliation:
Department of Physics, University of Rome “La Sapienza”, Italy
F. Piacentini
Affiliation:
Department of Physics, University of Rome “La Sapienza”, Italy
G. Polenta
Affiliation:
Department of Physics, University of Rome “La Sapienza”, Italy
M. Veneziani
Affiliation:
Department of Physics, University of Rome “La Sapienza”, Italy
M. Gervasi
Affiliation:
Department of Physics, University of Milano Bicocca, Italy
G. Sironi
Affiliation:
Department of Physics, University of Milano Bicocca, Italy
A. Tartari
Affiliation:
Department of Physics, University of Milano Bicocca, Italy
M. Zannoni
Affiliation:
Department of Physics, University of Milano Bicocca, Italy
S. Peterzen
Affiliation:
ISTARS and Agenzia Spaziale Italiana, Italy
J. Bartlett
Affiliation:
Cosmology Group, Collège de France, Paris, France
Y. Giraud-Heraud
Affiliation:
Cosmology Group, Collège de France, Paris, France
M. Piat
Affiliation:
Cosmology Group, Collège de France, Paris, France
C. Rosset
Affiliation:
Cosmology Group, Collège de France, Paris, France
M. Giard
Affiliation:
CESR, Toulouse, France
R. Pons
Affiliation:
CESR, Toulouse, France
B. Maffei
Affiliation:
Department of Physics and Astronomy, University of Cardiff, UK
P. Ade
Affiliation:
Department of Physics and Astronomy, University of Cardiff, UK
W. Gear
Affiliation:
Department of Physics and Astronomy, University of Cardiff, UK
P. Mauskopf
Affiliation:
Department of Physics and Astronomy, University of Cardiff, UK
L. Piccirillo
Affiliation:
Department of Physics and Astronomy, University of Cardiff, UK
G. Pisano
Affiliation:
Department of Physics and Astronomy, University of Cardiff, UK
G. Savini
Affiliation:
Department of Physics and Astronomy, University of Cardiff, UK
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Abstract

In the current cosmological scenario, part of the linearly polarizedemission of the CMB is expected to be rotational (B-modes). Thiscomponent is due to tensor perturbations of the metric produced byprimordial gravitational waves, which are generated a split-second after theBig Bang. The signal expected is of the order of ≲ 0.1 μK, well below the non-rotational component of the polarizationsignal (E-modes), and beyond the sensitivity of present generationinstruments. New, more sensitive instruments are developed inseveral labs, with the goal to measure the B-modes. Control ofsystematics and foregrounds will be the key to make the results ofthese experiments believable. In this paper we shortly outlineBRAIN, a bolometric interferometer devoted to B-modes research,and its pathfinder experiment, devoted to test the Dome-C site.


Type
Research Article
Information
European Astronomical Society Publications Series , Volume 14: Dome C Astronomy and Astrophysics Meeting , 2005 , pp. 87 - 92
Copyright
© EAS, EDP Sciences, 2005

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