Modelling the correlation between the thermal Sunyaev Zel'dovich effect and the cosmic infrared background

被引：48

作者：

Addison, G. E. ^{[1
]}

Dunkley, J. ^{[1
]}

Spergel, D. N. ^{[2
]}

机构：

[1] Univ Oxford, Sub Dept Astrophys, Oxford OX1 3RH, England

[2] Princeton Univ, Dept Astrophys Sci, Princeton, NJ 08544 USA

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2012年 / 427卷 / 02期

基金：

欧洲研究理事会;

关键词：

galaxies: clusters: general; cosmic background radiation; cosmology: theory; infrared: diffuse background; submillimetre: galaxies; HALO OCCUPATION DISTRIBUTION; ATACAMA COSMOLOGY TELESCOPE; ANGULAR POWER SPECTRUM; STAR-FORMATION; RELATIVISTIC CORRECTIONS; SUBMILLIMETER GALAXIES; LUMINOSITY FUNCTION; CROSS-CORRELATION; REDSHIFT SURVEY; SMALL-SCALE;

D O I：

10.1111/j.1365-2966.2012.21664.x

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We show how the correlation between the thermal Sunyaev Zel'dovich effect (tSZ) from galaxy clusters and dust emission from cosmic infrared background (CIB) sources can be calculated in a halo model framework. Using recent tSZ and CIB models, we find that the size of the tSZxCIB cross-correlation is approximately 20 per cent at 150 GHz. The contribution to the total angular power spectrum is around-2 mu K-2 at l = 3000; however, this value is uncertain by a factor of 2-3, primarily because of CIB source modelling uncertainties. We expect the large uncertainty in this component to degrade upper limits on the kinematic Sunyaev Zel'dovich effect (kSZ), due to similarity in the frequency dependence of tSZxCIB and kSZ across the frequency range probed by current cosmic microwave background missions. We also find that the degree of tSZxCIB correlation is higher for mmxsub-mm spectra than mmxmm, because more of the sub-mm CIB originates at lower redshifts (z less than or similar to 2), where most tSZ clusters are found.

引用

页码：1741 / 1754

页数：14

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