アキタヤ　ヒロシ   秋田谷　洋    所属   千葉工業大学  天文学研究センター 天文学研究センター    職種   上席研究員
言語種別	英語
発行・発表の年月	2019/03/09
形態種別	学術雑誌
標題	Comparison of polarization at two lunar eclipse events
執筆形態	共著
掲載誌名	Publications of the Astronomical Society of Japan
掲載区分	国外
出版社・発行元	Oxford University Press (OUP)
巻・号・頁	71(2),pp.6
著者・共著者	Jun Takahashi, Yoichi Itoh, Makoto Watanabe, Hiroshi Akitaya, Katsutoshi Takaki, Koji S Kawabata, Ryosuke Itoh, Yumiko Oasa
概要	<jats:title>Abstract</jats:title> <jats:p>We present the results of imaging polarimetry of the eclipsed Moon on 2014 October 8. The observed polarization degree was less than 1% in both the V and R bands, which contrasts with the reported 2%–3% polarization during the eclipse of 2015 April 4. We examined the Earth’s atmospheric data on the two dates and found that the high (≥7 km) cloud distribution was more inhomogeneous for the 2015 eclipse than it was for the 2014 eclipse. The polarization position angle observed during the 2015 eclipse can be explained if the major polarizing source was high clouds with an intermediate horizontal optical thickness. We suggest a possible dependence of the lunar eclipse polarization on the Earth’s high cloud distribution.</jats:p>
DOI	10.1093/pasj/psz017
ISSN	00046264
NAID	1360567184690145664