@inproceedings{oai:jaxa.repo.nii.ac.jp:00005054, author = {野田, 博文 and 上原, 悠一 and 山田, 真也 and 牧島, 一夫 and 中澤, 知洋 and Noda, Hirofumi and Uehara, Yuuichi and Yamada, Shinya and Makishima, Kazuo and Nakazawa, Kazuhiro}, book = {宇宙航空研究開発機構特別資料:, JAXA Special Publication: The Energetic Cosmos; from Suzaku to ASTRO-H}, month = {Feb}, note = {The 3rd Suzaku international Conference "Energetic Cosmos : from Suzaku to ASTRO-H" (June 29-July 2, 2009. Grand Park Otaru Hotel), Otaru, Hokkaido Japan, We reanalyzed 30 archival Suzaku data sets of 18 AGNs, focusing on their hard band variability. In 6 objects including MCG-6-30-15, we discovered a new hard spectral component that varies independently of the power-law. In one observation of MCG-6-30-15 made on 2006 January 27, this component carried a considerable fraction of the hard X-ray bump which is usually attributed to disk reflecton. Taking this hard component into account, the solid angle of reflection reduced to approximately 2pi and the equivalent width of broad iron line to approximately 140 eV. Although the nature of this new component is still open, it allows us to interpret the Suzaku data of this Seyfert without invoking the strong reflection nor the extremely broad iron line., Meeting sponsors: The University of Tokyo, The Institute of Physical and Chemical Research, The Japan Society for the Promotion of Science, 資料番号: AA0064574122, レポート番号: JAXA-SP-09-008E}, pages = {318--319}, publisher = {宇宙航空研究開発機構, Japan Aerospace Exploration Agency (JAXA)}, title = {Suzaku Discovery of a Hard Component that Varies Independently of the Power-Law in Several Seyfert Galaxies}, volume = {JAXA-SP-09-008E}, year = {2010} }