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ヨネハラ アツノリ
YONEHARA ATSUNORI
米原 厚憲 所属 京都産業大学 理学部 宇宙物理・気象学科 職種 教授 |
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| 言語種別 | 英語 |
| 発行・発表の年月 | 2001/09 |
| 形態種別 | その他 |
| 標題 | Source size measurement from observed quasar microlensing |
| 執筆形態 | その他 |
| 掲載誌名 | PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF AUSTRALIA |
| 出版社・発行元 | C S I R O PUBLISHING |
| 巻・号・頁 | 18(2),pp.211-214 |
| 著者・共著者 | A Yonehara |
| 概要 | Recently, the OGLE team have reported a clear quasar microlensing signal in Q2237+0305. I have analyzed the microlens event of 'image C' by using their finely and densely sampled light curves. From light curve fitting, I unambiguously set the source size of less than or equal to0.98 Einstein-Ring radius as a conservative limit. This limit corresponds to 2000 AU, if I adopt M-lens similar to0.1M(circle dot) obtained by a recent statistical study of the mean mass of the lens object. This gives clear evidence for the existence of an accretion disk in the central region of the quasar. |
| DOI | 10.1071/AS01014 |
| ISSN | 1323-3580 |