@article{oai:jaxa.repo.nii.ac.jp:00029487, author = {佐藤, 寿紀 and Hughes, John P. and Sato, Toshiki and Hughes, John P.}, issue = {2}, journal = {The Astrophysical Journal}, month = {Aug}, note = {Accepted: 2017-07-26, 資料番号: SA1170087000}, title = {Freely Expanding Knots of X-Ray-emitting Ejecta in Kepler's Supernova Remnant}, volume = {845}, year = {2017} }