Fluctuations in apparent mass at the bottom of granular columns due to different arrangements
文献类型：期刊论文
| 作者 | Chand, R ; Shi, QF ; Qadir, A ; Ma, SP ; Sun, G |
| 刊名 | PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS
 |
| 出版日期 | 2012 |
| 卷号 | 391期号:10页码:2936 |
| ISSN号 | 0378-4371 |
| 通讯作者 | Ma, SP: Beijing Inst Technol, Sch Aerosp Engn, Beijing 100081, Peoples R China. |
| 中文摘要 | We reconstruct the shape of the primordial power spectrum of curvature perturbations in extended cosmological models, including addition of massive neutrinos, extra relativistic species, or varying primordial helium abundance, from the latest cosmic microwave background data from the Wilkinson Microwave Anisotropy Probe, the Atacama Cosmology Telescope, and the South Pole Telescope. We find that a scale-invariant primordial spectrum is disfavored by the data at 95% confidence level even in the presence of massive neutrinos, however it can lie within the 95% confidence region if the effective number of relativistic species or the primordial helium abundance is allowed to vary freely. The constraints on the extension parameters from WMAP7 + ACT + H-0 + BAO are the total mass of neutrinos Sigma m(p) < 0.48 eV (95% C.L.), the effective number of relativistic species N-eff 4.50 +/- 0.81, and the primordial helium abundance Y-p 0.303 +/- 0.075. The constraints from WMAP7 + SPT + H-0 + BAO are Sigma m(p) < 0.45 eV (95% C.L.), N-eff 3.86 +/- 0.63, and Y-p 0.277 +/- 0.050. |
| 收录类别 | SCI |
| 资助信息 | Chinese National Science Foundation [11172039, 10975014, 10875166] |
| 语种 | 英语 |
| 公开日期 | 2013-09-17 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/38296]  |
| 专题 | 物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文 |
| 推荐引用方式 GB/T 7714 | Chand, R,Shi, QF,Qadir, A,et al. Fluctuations in apparent mass at the bottom of granular columns due to different arrangements[J]. PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS,2012,391(10):2936. |
| APA | Chand, R,Shi, QF,Qadir, A,Ma, SP,&Sun, G.(2012).Fluctuations in apparent mass at the bottom of granular columns due to different arrangements.PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS,391(10),2936. |
| MLA | Chand, R,et al."Fluctuations in apparent mass at the bottom of granular columns due to different arrangements".PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS 391.10(2012):2936. |
入库方式： OAI收割
来源：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。