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Precision CMB pPolarization from Dome-C: the BRAIN experiment

Masi, S., de Bernardis, P., Giordano, C., Nati, F., Piacentini, F., Polenta, G., Veneziani, M., Gervasi, M., Sironi, G., Tartari, A., Zannoni, M., Peterzen, S., Bartlett, J., Giraud-Heraud, Y., Piat, M., Rosset, C., Giard, M., Pons, R., Maffei, B., Ade, Peter A. R., Gear, Walter Kieran, Mauskopf, Philip Daniel, Piccirillo, L., Pisano, G. and Savini, Giorgio 2006. Precision CMB pPolarization from Dome-C: the BRAIN experiment. EAS Publications Series 14 , pp. 87-92. 10.1051/eas:2005014

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Abstract

In the current cosmological scenario, part of the linearly polarized emission of the CMB is expected to be rotational (B-modes). This component is due to tensor perturbations of the metric produced by primordial gravitational waves, which are generated a split-second after the Big Bang. The signal expected is of the order of ≲ 0.1 μK, well below the non-rotational component of the polarization signal (E-modes), and beyond the sensitivity of present generation instruments. New, more sensitive instruments are developed in several labs, with the goal to measure the B-modes. Control of systematics and foregrounds will be the key to make the results of these experiments believable. In this paper we shortly outline BRAIN, a bolometric interferometer devoted to B-modes research, and its pathfinder experiment, devoted to test the Dome-C site.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Physics and Astronomy
Subjects: Q Science > QB Astronomy
Additional Information: Dome C Astronomy & Astrophysics Meeting, Toulouse, France, January 2005. Pdf uploaded in accordance with publisher's policy at http://www.sherpa.ac.uk/romeo/issn/1633-4760/ (accessed 17/04/2014)
Publisher: EDP Sciences
ISSN: 1633-4760
Date of First Compliant Deposit: 30 March 2016
Last Modified: 04 Jun 2017 04:18
URI: http://orca-mwe.cf.ac.uk/id/eprint/36487

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