The SDSS-III Baryonic Oscillation Spectroscopic Survey: constraints on the integrated Sachs-Wolfe effect
文献类型：期刊论文
| 作者 | Hernandez-Monteagudo, C; Ross, AJ; Cuesta, A; Genova-Santos, R; Xia, JQ; Prada, F; Rossi, G; Neyrinck, M; Viel, M; Rubino-Martin, JA |
| 刊名 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
 |
| 出版日期 | 2014 |
| 卷号 | 438期号:2页码:1724-1740 |
| 关键词 | cosmic background radiation cosmology: observations large-scale structure of Universe |
| 英文摘要 | In the context of the study of the integrated Sachs-Wolfe (ISW) effect, we construct a template of the projected density distribution up to redshift z similar or equal to 0.7 by using the luminous galaxies (LGs) from the Sloan Digital Sky Survey (SDSS) Data Release 8 (DR8). We use a photometric redshift catalogue trained with more than a hundred thousand galaxies from the Baryon Oscillation Spectroscopic Survey (BOSS) in the SDSS DR8 imaging area covering nearly one-quarter of the sky. We consider two different LG samples whose selection matches that of SDSS-III/BOSS: the low-redshift sample (LOWZ, z is an element of [0.15, 0.5]) and the constant mass sample (CMASS, z is an element of [0.4, 0.7]). When building the galaxy angular density templates we use the information from star density, survey footprint, seeing conditions, sky emission, dust extinction and airmass to explore the impact of these artefacts on each of the two LG samples. In agreement with previous studies, we find that the CMASS sample is particularly sensitive to Galactic stars, which dominate the contribution to the auto-angular power spectrum below l = 7. Other potential systematics affect mostly the very low multipole range (l is an element of [2, 7]), but leave fluctuations on smaller scales practically unchanged. The resulting angular power spectra in the multipole range l is an element of [2, 100] for the LOWZ, CMASS and LOWZ+CMASS samples are compatible with linear Lambda cold dark matter (Lambda CDM) expectations and constant bias values of b = 1.98 +/- 0.11, 2.08 +/- 0.14 and 1.88 +/- 0.11, respectively, with no traces of non-Gaussianity signatures, i.e. f(NL)(loca)l = 59 +/- 75 at 95 per cent confidence level for the full LOWZ+CMASS sample in the multipole range l is an element of [4, 100]. After cross-correlating Wilkinson Microwave Anisotropy Probe 9-year data with the LOWZ+CMASSLGprojected density field, the ISW signal is detected at the level of 1.62-1.69 sigma. While this result is in close agreement with theoretical expectations and predictions from realistic Monte Carlo simulations in the concordance Lambda CDM model, it cannot rule out by itself an Einstein-de Sitter scenario, and has a moderately low signal compared to previous studies conducted on subsets of this LG sample. We discuss possible reasons for this apparent discrepancy, and point to uncertainties in the galaxy survey systematics as most likely sources of confusion. |
| 学科主题 | Astronomy & Astrophysics |
| 收录类别 | SCI |
| WOS记录号 | WOS:000330955900061 |
| 公开日期 | 2016-05-03 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/225187]  |
| 专题 | 中国科学院高能物理研究所 |
| 推荐引用方式 GB/T 7714 | Hernandez-Monteagudo, C,Ross, AJ,Cuesta, A,et al. The SDSS-III Baryonic Oscillation Spectroscopic Survey: constraints on the integrated Sachs-Wolfe effect[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2014,438(2):1724-1740. |
| APA | Hernandez-Monteagudo, C.,Ross, AJ.,Cuesta, A.,Genova-Santos, R.,Xia, JQ.,...&Brinkmann, JV；夏俊卿.(2014).The SDSS-III Baryonic Oscillation Spectroscopic Survey: constraints on the integrated Sachs-Wolfe effect.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,438(2),1724-1740. |
| MLA | Hernandez-Monteagudo, C,et al."The SDSS-III Baryonic Oscillation Spectroscopic Survey: constraints on the integrated Sachs-Wolfe effect".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 438.2(2014):1724-1740. |
入库方式： OAI收割
来源：高能物理研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。