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 mu K, 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.

Masi, S., de Bernardis, P., Giordano, C., Nati, F., Piacentini, F., Polenta, G., et al. (2005). Precision CMB polarization from Dome-C: The brain experiment. In Dome C: Astronomy and Astrophysics Meeting (pp.87-92). CEDEX A : E D P SCIENCES [10.1051/eas.2005014].

Precision CMB polarization from Dome-c: The brain experiment

Nati, F;GERVASI, MASSIMO;SIRONI, GIORGIO;TARTARI, ANDREA;ZANNONI, MARIO;
2005

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 mu K, 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.
paper
CMB, Polarimetry, Cosmology, Bolometers, Interferometry
English
Dome C Astronomy and Astrophysics Meeting
2-86883-835-9
Masi, S., de Bernardis, P., Giordano, C., Nati, F., Piacentini, F., Polenta, G., et al. (2005). Precision CMB polarization from Dome-C: The brain experiment. In Dome C: Astronomy and Astrophysics Meeting (pp.87-92). CEDEX A : E D P SCIENCES [10.1051/eas.2005014].
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, P; Gear, W; Mauskopf, P; Piccirillo, L; Pisano, G; Savini, G
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/38984
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