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	日本語
発行・発表の年月	2022/12/28
形態種別	学術雑誌
標題	X-Ray Polarization Observations of BL Lacertae
執筆形態	共著
掲載誌名	The Astrophysical Journal Letters
掲載区分	国外
出版社・発行元	American Astronomical Society
巻・号・頁	942(1),L10頁
国際共著	国際共著
著者・共著者	Riccardo Middei, Ioannis Liodakis, Matteo Perri, Simonetta Puccetti, Elisabetta Cavazzuti, Laura Di Gesu, Steven R. Ehlert, Grzegorz Madejski, Alan P. Marscher, Herman L. Marshall, Fabio Muleri, Michela Negro, Svetlana G. Jorstad, Beatriz Agís-González, Iván Agudo, Giacomo Bonnoli, Maria I. Bernardos, Víctor Casanova, Maya García-Comas, César Husillos, Alessandro Marchini, Alfredo Sota, Pouya M. Kouch, Elina Lindfors, George A. Borman, Evgenia N. Kopatskaya, Elena G. Larionova, Daria A. Morozova
概要	Blazars are a class of jet-dominated active galactic nuclei with a typical double-humped spectral energy distribution. It is of common consensus that the synchrotron emission is responsible for the low frequency peak, while the origin of the high frequency hump is still debated. The analysis of X-rays and their polarization can provide a valuable tool to understand the physical mechanisms responsible for the origin of high-energy emission of blazars. We report the first observations of BL Lacertae (BL Lac) performed with the Imaging X-ray Polarimetry Explorer, from which an upper limit to the polarization degree ΠX < 12.6% was found in the 2–8 keV band.
DOI	10.3847/2041-8213/aca281
ISSN	20418205
NAID	1360580232390828544