图 书 馆
未来的暗能量探测及其鲁棒性研究Future dark energy probes and their robustness to systematics |
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| 课程网址: | http://videolectures.net/nipsworkshops2011_march_energy/ |
| 主讲教师: | Marisa Cristina March |
| 开课单位: | 萨塞克斯大学 |
| 开课时间: | 2012-01-23 |
| 课程语种: | 英语 |
| 中文简介: |  |
| 课程简介: | We extend the Figure of Merit formalism usually adopted to quantify the statistical performance of future dark energy probes to assess the robustness of a future mission to plausible systematic bias. We introduce a new robustness Figure of Merit which can be computed in the Fisher Matrix formalism given arbitrary systematic biases in the observable quantities. We argue that robustness to systematics is an important new quantity that should be taken into account when optimizing future surveys. We illustrate our formalism with toy examples, and apply it to future type Ia supernova (SNIa) and baryonic acoustic oscillation (BAO) surveys. For the simplified systematic biases that we consider, we find that SNIa are a somewhat more robust probe of dark energy parameters than the BAO. We trace this back to a geometrical alignement of systematic bias direction with statistical degeneracy directions in the dark energy parameter space. |
| 关 键 词: | 鲁棒性; 矩阵形式主义; 系统偏差; 暗能量参数空间 |
| 课程来源: | 视频讲座网 |
| 最后编审: | 2020-06-02：毛岱琦(课程编辑志愿者) |
| 阅读次数: | 38 |