Anisotropic power spectrum and the observed low-l power in planck cmb data | |
Chang, Zhe1,2; Rath, Pranati K.1,3; Sang, Yu1,2; Zhao, Dong1,2 | |
刊名 | Research in astronomy and astrophysics |
2018-03-01 | |
卷号 | 18期号:3页码:10 |
关键词 | Cosmic background radiation Large-scale structure of universe |
ISSN号 | 1674-4527 |
DOI | 10.1088/1674-4527/18/3/29 |
通讯作者 | Rath, pranati k.(pranati@ihep.ac.cn) |
英文摘要 | In this work, we study a direction dependent power spectrum in anisotropic finsler space-time. we use this direction dependent power spectrum to address the low-l power observed in wmap and planck data. the angular power spectrum of the temperature fluctuations has a lower amplitude in comparison to the lambda cdm model in the multipole range l = 2 - 40. our theoretical model gives a correction to the isotropic angular power spectrum c-l(tt) due to the breaking of rotational invariance of the primordial power spectrum. we estimate best-fit model parameters along with the six lambda cdm cosmological parameters using the planck likelihood code in cosmomc software. we find that this modified angular power spectrum fits the cmb temperature data in the multipole range l = 2 - 10 to a good extent but fails for the whole multipole range l = 2 - 40. |
WOS关键词 | FINE-STRUCTURE CONSTANT ; PROBE WMAP OBSERVATIONS ; SPECIAL RELATIVITY ; COSMOLOGICAL PARAMETERS ; FINSLER SPACETIME ; COLD SPOT ; MICROWAVE ; PARITY ; ASYMMETRY ; SYMMETRY |
WOS研究方向 | Astronomy & Astrophysics |
WOS类目 | Astronomy & Astrophysics |
语种 | 英语 |
出版者 | NATL ASTRONOMICAL OBSERVATORIES, CHIN ACAD SCIENCES |
WOS记录号 | WOS:000428268500005 |
内容类型 | 期刊论文 |
URI标识 | http://www.corc.org.cn/handle/1471x/2178196 |
专题 | 高能物理研究所 |
通讯作者 | Rath, Pranati K. |
作者单位 | 1.Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Theoret Phys Ctr Sci Facil, Beijing 100049, Peoples R China |
推荐引用方式 GB/T 7714 | Chang, Zhe,Rath, Pranati K.,Sang, Yu,et al. Anisotropic power spectrum and the observed low-l power in planck cmb data[J]. Research in astronomy and astrophysics,2018,18(3):10. |
APA | Chang, Zhe,Rath, Pranati K.,Sang, Yu,&Zhao, Dong.(2018).Anisotropic power spectrum and the observed low-l power in planck cmb data.Research in astronomy and astrophysics,18(3),10. |
MLA | Chang, Zhe,et al."Anisotropic power spectrum and the observed low-l power in planck cmb data".Research in astronomy and astrophysics 18.3(2018):10. |
个性服务 |
查看访问统计 |
相关权益政策 |
暂无数据 |
收藏/分享 |
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。
修改评论