The Sky Polarization Observatory

被引：28

作者：

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

Peverini, OA

Tascone, R

Virone, G

Fabbri, R

Natale, V

Nicastro, L

Ng, KW

Vinyajkin, EN

Razin, VA

Sazhin, MV

Strukov, IA

Negri, B

机构：

[1] CNR, IASF, Sez Bologna, I-40129 Bologna, Italy

[2] CNR Bologna, IRA, I-20133 Milan, Italy

[3] Univ Milano Bicocca, Phys Dept G Occhialini, I-20126 Milan, Italy

[4] CNR Milano, IASF, I-20133 Milan, Italy

[5] CNR Torino, IEIIT, I-10129 Turin, Italy

[6] Univ Florence, Dipartimento Fis, I-50019 Sesto Fiorentino, Italy

[7] CNR Firenze, IRA, I-50125 Florence, Italy

[8] CNR Palermo, IASF, I-90146 Palermo, Italy

[9] Acad Sinica, Inst Phys, Taipei 11529, Taiwan

[10] Acad Sinica, ASIAA, Taipei 11529, Taiwan

[11] NIRFI, Nizhnii Novgorod 603600, Russia

[12] Moscow MV Lomonosov State Univ, Schternberg Astron Inst, Moscow 119992, Russia

[13] Space Res Inst IKI, Moscow 117810, Russia

[14] Agenzia Spaziale Italiana, I-00198 Rome, Italy

来源：

NEW ASTRONOMY | 2004年 / 9卷 / 04期

关键词：

cosmic microwave background; polarization; cosmology : observations;

D O I：

10.1016/j.newast.2003.11.004

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

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 = 7degrees. 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 muK 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. (C) 2003 Elsevier B.V. All rights reserved.

引用

页码：297 / 327

页数：31

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