@inproceedings{oai:jaxa.repo.nii.ac.jp:00004984,
 author = {信川, 正順 and 小山, 勝二 and 鶴, 剛 and 劉, 周強 and Nobukawa, Masayoshi and Koyama, Katsuji and Tsuru, Takeshi Go and Ryu, Shukyo G},
 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, The K-shell emission line of neutral iron from the Galactic center region was firstly discovered with ASCA. Since then, the origin is one of the key issues for the structure and activity of the Galactic center. Two possible origins have so far been proposed; fluorescence due either to an X-ray or an electron irradiations. Since the cross sections of these two processes depend differently on the atomic number, detections of neutral Kalpha lines from other elements such as sulfur, argon, calcium, chrome and manganese atoms would provide key information for the origin. We report the Suzaku discovery of Kalpha  lines of neutral sulfur, argon, calcium, chrome, and manganese atoms from the molecular cloud which emits the brightest neutral iron line. New constrains on the origin of the neutral K-shell lines are given with the combination of these neutral Kalpha lines., 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: AA0064574052, レポート番号: JAXA-SP-09-008E},
 pages = {138--141},
 publisher = {宇宙航空研究開発機構, Japan Aerospace Exploration Agency (JAXA)},
 title = {Discovery of Kalpha lines of neutral sulfur, argon, and calcium atoms from the Galactic Center},
 volume = {JAXA-SP-09-008E},
 year = {2010}
}