J
J. Hiraga
Researcher at University of Tokyo
Publications - 9
Citations - 157
J. Hiraga is an academic researcher from University of Tokyo. The author has contributed to research in topics: Neutron star & Magnetar. The author has an hindex of 4, co-authored 9 publications receiving 142 citations.
Papers
More filters
Journal ArticleDOI
Possible evidence for free precession of a strongly magnetized neutron star in the magnetar 4U 0142+61.
Kazuo Makishima,Teruaki Enoto,J. Hiraga,Toshio Nakano,Koji Nakazawa,Soki Sakurai,Masaki Sasano,Hiroshi Murakami +7 more
TL;DR: The magnetar 4 U 0142+61, one of the prototypes of this class, was studied in broadband x rays with the Suzaku observatory and suggests a strong toroidal magnetic field, ∼ 10(12) T, residing inside the object.
Journal ArticleDOI
Suzaku studies of the supernova remnant CTB 109 hosting the magnetar 1E 2259+586
Toshio Nakano,Hiroaki Murakami,Kazuo Makishima,J. Hiraga,Hideki Uchiyama,Hidehiro Kaneda,Teruaki Enoto +6 more
TL;DR: In this paper, the ages of the magnetar 1E 2259+586 and the associated supernova remnant CTB 109 were studied, and it was shown that magnetars are much younger objects than previously considered, and can dominate new-born neutron stars.
Journal ArticleDOI
Suzaku Studies of the Supernova Remnant CTB~109 Hosting the Magnetar 1E~2259+586
TL;DR: In this paper, the ages of the magnetar 1E 2259+586 and the associated supernova remnant CTB~109 were studied and it was shown that magnetars are much younger objects than previously considered and can dominate new-born neutron stars.
Proceedings ArticleDOI
In-flight status of the X-ray observatory Suzaku
Tadayasu Dotani,Kazuhisa Mitsuda,Marshall W. Bautz,Hajime Inoue,R. L. Kelley,Kazuya Koyama,Hideyo Kunieda,Kazuo Makishima,Y. Ogawara,Robert Petre,Tadayuki Takahashi,H. Tsunemi,N. E. White,Naohisa Anabuki,Lorella Angelini,K. A. Arnaud,Hisamitsu Awaki,Aya Bamba,K. R. Boyce,Gregory V. Brown,Kai Wing Chan,Jean Cottam,John P. Doty,K. Ebisawa,Yuichiro Ezoe,A. C. Fabian,E. Figueroa,Ryuichi Fujimoto,Yasushi Fukazawa,T. Furusho,Akihiro Furuzawa,Keith C. Gendreau,Richard E. Griffiths,Yoshito Haba,K. Hamaguchi,I. M. Harrus,Günther Hasinger,Isamu Hatsukade,Kiyoshi Hayashida,Patrick Henry,J. Hiraga,S. S. Holt,Ann Hornschemeier,John P. Hughes,Una Hwang,Manabu Ishida,Y. Ishisaki,N. Isobe,Masayuki Itoh,N. Iyomoto,S. M. Kahn,T. Kamae,Hideaki Katagiri,Jun Kataoka,Haruyoshi Katayama,N. Kawai,Madoka Kawaharada,Caroline A. Kilbourne,Kenzo Kinugasa,Steven E. Kissel,Shunji Kitamoto,Mitsuhiro Kohama,Takayoshi Kohmura,Motohide Kokubun,T. Kotani,J. Kotoku,Aya Kubota,G. M. Madejski,Yoshitomo Maeda,F. Makino,Alex Markowitz,Chiho Matsumoto,Hironori Matsumoto,M. Matsuoka,K. Matsushita,D. McCammon,T. Mihara,Kazutami Misaki,Emi Miyata,Tsunefumi Mizuno,Koji Mori,Hideyuki Mori,Mikio Morii,H. Moseley,K. Mukai,Hiroshi Murakami,Toshio Murakami,R. F. Mushotzky,Fumiaki Nagase,M. Namiki,Hitoshi Negoro,Koji Nakazawa,J. A. Nousek,Takashi Okajima,Y. Ogasaka,Takaya Ohashi,T. Oshima,Naomi Ota,M. Ozaki,H. Ozawa,A. N. Parmar,W. D. Pence,F. Scott Porter,James Reeves,George R. Ricker,Ikuya Sakurai,Wilton T. Sanders,Atsushi Senda,P. J. Serlemitsos,Ryo Shibata,Keisuke Shinozaki,Yang Soong,R. Smith,Motoko Suzuki,A. E. Szymkowiak,Hiromitsu Takahashi,Yoh Takei,T. Tamagawa,Keisuke Tamura,Takayuki Tamura,Yasuyuki T. Tanaka,Makoto Tashiro,Yuzuru Tawara,Yukikatsu Terada,Yuichi Terashima,H. Tomida,Ken'ichi Torii,Y. Tsuboi,Y. Tsujimoto,Takeshi Go Tsuru,Martin J. L. Turner,Y. Uchiyama,Yoshihiro Ueda,Shiro Ueno,M. Ueno,Shinichiro Uno,Y. Urata,Shin Watanabe,N. Yamamoto,Kazutaka Yamaoka,Noriko Y. Yamasaki,Koujun Yamashita,Makoto Yamauchi,Shigeo Yamauchi,Tahir Yaqoob,Daisuke Yonetoku,Atsumasa Yoshida +146 more
TL;DR: In this paper, the authors report in-flight status of the X-ray detectors on board the Suzaku observatory, the 5th Xray astronomy satellite of Japan launched on July 10, 2005.
Posted Content
ASTRO-H White Paper - Older Supernova Remnants and Pulsar Wind Nebulae
Knox S. Long,Aya Bamba,Felix Aharonian,Adam R. Foster,Stefan Funk,J. Hiraga,John P. Hughes,Manabu Ishida,Satoru Katsuda,Hironori Matsumoto,K. Mori,Hiroshi Nakajima,Takeshi Nakamori,M. Ozaki,Samar Safi-Harb,Makoto Sawada,T. Tamagawa,Keisuke Tamura,Takaaki Tanaka,Hiroshi Tsunemi,Hiroyuki Uchida,Yasunobu Uchiyama,S. Yamauchi +22 more
TL;DR: In this paper, the Soft X-ray Spectrometer (SXS) on-board ASTRO-H was used to study the evolution of supernova remnants, including pulsar wind nebulae and mixed-morphology SNRs.