Constraining low redshift [C II] emission by cross-correlating FIRAS and BOSS data

被引：11

作者：

Anderson, C. J. ^{[1
]}

Switzer, E. R. ^{[1
]}

Breysse, P. C. ^{[2
]}

机构：

[1] NASA, Goddard Space Flight Ctr, Code 916, Greenbelt, MD 20771 USA

[2] NYU, Ctr Cosmol & Particle Phys, Dept Phys, 726 Broadway, New York, NY 10003 USA

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2022年 / 514卷 / 01期

基金：

美国安德鲁·梅隆基金会;

关键词：

methods: data analysis; galaxies: evolution; infrared: general; ANGULAR POWER SPECTRUM; STAR-FORMATION; 21-CM EMISSION; LINE EMISSION; INTENSITY; GALAXIES; GAS; EVOLUTION; INFORMATION; CALIBRATION;

D O I：

10.1093/mnras/stac1301

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We perform a tomographic cross-correlation analysis of archival FIRAS data and the BOSS galaxy redshift survey to constrain the amplitude of [C II] P-2(3/2) -> P-2(1/2) fine structure emission. Our analysis employs spherical harmonic tomography (SHT), which is based on the angular cross-power spectrum between FIRAS maps and BOSS galaxy over-densities at each pair of redshift bins, over a redshift range of 0.24 < z < 0.69. We develop the SHT approach for intensity mapping, where it has several advantages over existing power spectral estimators. Our analysis constrains the product of the [C II] bias and [C II] specific intensity, b([C II])I([C II]), to be <0.31 MJy/sr at z approximate to 0.35 and <0.28 MJy/sr at z approximate to 0.57 at 95 per cent confidence. These limits are consistent with most current models of the [C II] signal, as well as with higher-redshift [C II] cross-power spectrum measurements from the Planck satellite and BOSS quasars. We also show that our analysis, if applied to data from a more sensitive instrument such as the proposed PIXIE satellite, can detect pessimistic [C II] models at high significance.

引用

页码：1169 / 1187

页数：19

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