このエントリーをはてなブックマークに追加
ID 46724
本文ファイル
著者
Uemura, Makoto 宇宙科学センター 広大研究者総覧
Fukazawa, Yasushi 大学院理学研究科 広大研究者総覧
Kawabata, Koji S. 宇宙科学センター 広大研究者総覧
Itoh, Ryosuke
Sakon, Itsuki
Fujisawa, Kenta
Kadota, Akiko
Ohsugi, Takashi 宇宙科学センター
Yoshida, Michitoshi 宇宙科学センター
Yasuda, Hajimu
Sato, Shuji
Kino, Masaru
キーワード
BL Lacertae Objects: individual: 3C 454.3 — polarization — infrared: general
NDC
天文学・宇宙科学
抄録(英)
In December 2009, the bright blazar, 3C 454.3 exhibited a strong outburst in the optical, X-ray and gamma-ray regions. We performed photometric and polarimetric monitoring of this outburst in the optical and near-infrared bands with TRISPEC and HOWPol attached to the Kanata telescope. We also observed this outburst in the infrared band with AKARI, and the radio band with the 32-m radio telescope of Yamaguchi University. The object was in an active state from JD 2455055 to 2455159. It was 1.3 mag brighter than its quiescent state before JD 2455055 in the optical band. After the end of the active state in JD 2455159, a prominent outburst was observed in all wavelengths. The outburst continued for two months. Our optical and near-infrared polarimetric observations revealed that the position angle of the polarization (PA) apparently rotated clockwise by 240 degrees within 11 d in the active state (JD 2455063—2455074), and after this rotation, PA remained almost constant during our monitoring. In the outburst state, PA smoothly rotated counterclockwise by 350 degrees within 35 d (JD 2455157—2455192). Thus, we detected two distinct rotation events of polarization vector in opposite directions. We discuss these two events compared with the past rotation events observed in 2005, 2007 and 2008.
内容記述
This work was partly supported by a Grand-in-Aid from the Ministry of Education, Culture, Sports, Science, and Technology of Japan (22540252,). This research has made use of data from the University of Michigan Radio Astronomy Observatory which has been supported by the University of Michigan and by a series of grants from the National Science Foundation, most recently AST-0607523. The Submillimeter Array is a joint project between the Smithsonian Astrophysical Observatory and the Academia Sinica Institute of Astronomy and Astrophysics and is funded by the Smithsonian Institution and the Academia Sinica. M. Sasada and M. Yamanaka have been supported by the JSPS Research Fellowship for Young Scientists.
掲載誌名
Publications of the Astronomical Society of Japan
64巻
3号
開始ページ
58-1
終了ページ
58-8
出版年月日
2012-06-25
出版者
Astronomical Society of Japan
ISSN
0004-6264
NCID
出版者DOI
言語
英語
NII資源タイプ
学術雑誌論文
広大資料タイプ
学術雑誌論文
DCMIタイプ
text
フォーマット
application/pdf
著者版フラグ
author
権利情報
Copyright (c) 2012 The Astronomical Society of Japan
This is not the published version. Please cite only the published version. この論文は出版社版でありません。引用の際には出版社版をご確認ご利用ください。
関連情報URL
部局名
宇宙科学センター
理学研究科