研究課題
特別研究員奨励費
We successfully conducted two lens searches in Space Warps (SW, spacewarps.org) in FY2013. I led the first SW lens search and analysed the results. I made comparisons between the performance of humans vs robots and we find a fairly large number of lens candidates which were missed by previous robotic searches. Our work is summarized and presented in Paper I- http://arxiv.org/abs/1504.06148 and Paper II - http://arxiv.org/abs/1504.05587 (to be submitted to MNRAS).From the second lens search which was conducted live on BBC in FY2013, an intriguing lens candidate was discovered. We used several world class telescopes including Subaru (owned by Japan) to confirm that this truly a lens and studied the properties of the lensed galaxy such as the star-formation rate. I produced the lens mass model which calculates how magnified the lensed galaxy is in order to derive the true luminosity of the lensed galaxy and other such properties (http://arxiv.org/abs/1503.05824, MNRAS submitted).We also enabled mass modelling of the lens candidates for the citizens (Kueng et al. 2015) and found that citizens produce fairly similar results compared to experts in this task. This is encouraging because assistance from citizens on mass modelling will become crucial as we embark upon the discovery of thousands of lens candidates.The resources from SW have legacy value e.g. the simulated lens samples that we generate are useful for testing other lens finding algorithms as we did in Chan et al. (2014, http://arxiv.org/abs/1411.5398)
26年度が最終年度であるため、記入しない。
すべて 2015 2014 2013 2012
すべて 雑誌論文 (9件) (うち査読あり 9件、 オープンアクセス 8件、 謝辞記載あり 2件) 学会発表 (3件) (うち招待講演 1件)
Monthly Notices of the Royal Astronomical Society
巻: 447 号: 3 ページ: 2170-2180
10.1093/mnras/stu2554
Science
巻: 344 号: 6182 ページ: 396-399
10.1126/science.1250903
120005466258
Monthly Notices of the Royal Astronomical Society Letters
巻: 442 号: 1 ページ: L76-L80
10.1093/mnrasl/slu058
Astronomy & Astrophysics
巻: 571 ページ: A65-A65
10.1051/0004-6361/201423696
巻: 444 号: 3 ページ: 2561-2570
10.1093/mnras/stu1621
巻: 430 号: 2 ページ: 747-766
10.1093/mnras/sts697
The Astrophysical Journal Letters
巻: 768 号: 1 ページ: 20-25
10.1088/2041-8205/768/1/l20
巻: 559 ページ: A105-A105
10.1051/0004-6361/201321112
The Astrophys. J. Letters
巻: (掲載確定)
