图 书 馆
未来暗能量探测器及其对系统学的鲁棒性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: | 苏塞克斯大学 |
| 开课时间: | 2012-06-23 |
| 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: | 暗能量; 鲁棒性; 声波振荡测量 |
| 课程来源: | 视频讲座网 |
| 数据采集: | 2020-11-30：yxd |
| 最后编审: | 2020-11-30：yxd |
| 阅读次数: | 55 |