Cosmic dust induced flux fluctuations: Bad and good aspects
文献类型：期刊论文
| 作者 | Zhang, Pengjie; Corasaniti, Pier Stefano |
| 刊名 | ASTROPHYSICAL JOURNAL
 |
| 出版日期 | 2007-03-01 |
| 卷号 | 657期号:1页码:71-75 |
| 关键词 | dust gravitational lensing large-scale structure of universe supernovae : general extinction |
| 英文摘要 | Cosmic dust extinction alters the flux of Type Ia supernovae (SNe Ia). Inhomogeneities in the dust distribution induce correlated fluctuations of the SN fluxes. We find that such correlation can be up to 60% of the signal caused by gravitational lensing magnification, with an opposite sign. Therefore, if not corrected, cosmic dust extinction is the dominant source of systematic uncertainty for future SNe Ia lensing measurement, limiting the overall S/N to be less than or similar to 10. On the other hand, SN flux correlation measurements can be used in combination with other lensing data to infer the level of dust extinction. This will provide a viable method to eliminate gray dust contamination from the SN Ia Hubble diagram. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | DARK ENERGY ; INTERGALACTIC DUST ; MAGNIFICATION ; COSMOLOGY ; CONSTRAINTS ; RECONSTRUCTION ; DECELERATION ; SUPERNOVAE ; TELESCOPE ; EVOLUTION |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000244635300007 |
| 源URL | [http://119.78.226.72/handle/331011/19453]  |
| 专题 | 上海天文台_星系宇宙学重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, Shanghai Astron Observ, Shanghai, Peoples R China 2.USTC, Hefei, Anhui, Peoples R China 3.Columbia Univ, Inst Strings Cosmol & Astroparticle Phys, New York, NY USA 4.Columbia Univ, Dept Astron, New York, NY USA |
| 推荐引用方式 GB/T 7714 | Zhang, Pengjie,Corasaniti, Pier Stefano. Cosmic dust induced flux fluctuations: Bad and good aspects[J]. ASTROPHYSICAL JOURNAL,2007,657(1):71-75. |
| APA | Zhang, Pengjie,&Corasaniti, Pier Stefano.(2007).Cosmic dust induced flux fluctuations: Bad and good aspects.ASTROPHYSICAL JOURNAL,657(1),71-75. |
| MLA | Zhang, Pengjie,et al."Cosmic dust induced flux fluctuations: Bad and good aspects".ASTROPHYSICAL JOURNAL 657.1(2007):71-75. |
入库方式： OAI收割
来源：上海天文台
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