Polarization fluctuations due to extragalactic sources

被引：25

作者：

De Zotti, G

Gruppioni, C

Ciliegi, P

Burigana, C

Danese, L

机构：

[1] Osservatorio Astron Padova, I-35122 Padua, Italy

[2] CNR, Ist TESRE, I-40127 Bologna, Italy

[3] SISSA, Int Sch Adv Studies, I-34014 Trieste, Italy

来源：

NEW ASTRONOMY | 1999年 / 4卷 / 06期

关键词：

cosmic microwave background; polarization; galaxies : active; radio continuum : galaxies;

D O I：

10.1016/S1384-1076(99)00039-1

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We have derived the relationship between polarization and intensity fluctuations due to point sources. In the case of a Poisson distribution of a population with uniform evolution properties and constant polarization degree, polarization fluctuations are simply equal to intensity fluctuations times the average polarization degree. Conservative estimates of the polarization degree of the classes of extragalactic sources contributing to fluctuations in the frequency ranges covered by the forthcoming space missions MAP and Planck Surveyor indicate that extragalactic sources will not be a strong limiting factor to measurements of the polarization of the Cosmic Microwave Background. (C) 1999 Elsevier Science B.V. All rights reserved.

引用

页码：481 / 488

页数：8

共 26 条

[1] SPECTRA AND LINEAR POLARIZATIONS OF EXTRAGALACTIC VARIABLE SOURCES AT CENTIMETER WAVELENGTHS [J].