K
Kiyotomo Ichiki
Researcher at Nagoya University
Publications - 235
Citations - 7674
Kiyotomo Ichiki is an academic researcher from Nagoya University. The author has contributed to research in topics: Cosmic microwave background & Magnetic field. The author has an hindex of 43, co-authored 224 publications receiving 6409 citations. Previous affiliations of Kiyotomo Ichiki include National Taiwan University & National Institutes of Natural Sciences, Japan.
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Journal ArticleDOI
The Japanese space gravitational wave antenna DECIGO
Seiji Kawamura,Hiroo Kunimori,Mizuhiko Hosokawa,Ryuichi Fujita,Keiichi Maeda,Hisa-aki Shinkai,Takahiro Tanaka,Yaka Wakabayashi,Hideki Ishihara,Kazutaka Nishiyama,Ken-ichi Ueda,Kaiki Taro Inoue,Kazuhiro Yamamoto,Kunihito Ioka,Feng-Lei Hong,Yoshiki Tsunesada,Kenji Numata,Masaru Shibata,Hitoshi Kuninaka,Kazuhiro Hayama,Chul-Moon Yoo,Kazuhiro Agatsuma,Mitsuru Musha,Shinji Miyoki,Yasufumi Kojima,Yumiko Ejiri,Takamori Akiteru,Kentaro Somiya,Dan Chen,Tadayuki Takahashi,Shiho Kobayashi,Mitsuhiro Fukushima,Takashi Nakamura,Naoshi Sugiyama,Yuta Michimura,Yoshiyuki Obuchi,Ayaka Shoda,Kei Kotake,Shihori Sakata,Takeshi Chiba,Yoichi Aso,Shigeo Nagano,Tomohiro Harada,Kiwamu Izumi,Nobuyuki Kanda,Isao Kawano,Nobuki Kawashima,Yasuo Torii,Motohiro Enoki,Yoshiaki Himemoto,Hirotaka Takahashi,Yudai Suwa,Hisashi Hirabayashi,Hiroyuki Ito,Keitaro Takahashi,Kiyotomo Ichiki,Kazuhiro Nakazawa,Morio Toyoshima,Takashi Hiramatsu,Hiroyuki Nakano,Hiroyuki Koizumi,Ke-Xun Sun,Toshikazu Ebisuzaki,Kent Yagi,Takeshi Ikegami,Koji Arai,Kouji Nakamura,Norio Okada,Takeshi Takashima,Takehiko Ishikawa,K. Okada,Wataru Kokuyama,Kakeru Takahashi,Masa-Katsu Fujimoto,Ryuichi Takahashi,Ryo Saito,K. Tsubono,Osamu Miyakawa,Ken-ichi Oohara,Hideyuki Horisawa,Hideharu Ishizaki,Shigenori Moriwaki,Norichika Sago,Masashi Ohkawa,Fuminobu Takahashi,Tatsuaki Hashimoto,Takashi Sato,Sachiko Kuroyanagi,Umpei Miyamoto,Kazuaki Kuroda,Toshifumi Futamase,Fumiko Kawazoe,Hideyuki Tagoshi,Yoshinori Nakayama,Masatake Ohashi,Yoshiharu Eriguchi,Toshitaka Yamazaki,Tadashi Takano,Hiroshi Yamakawa,Kenta Kiuchi,Ken-ichi Nakao,Taiga Noumi,Kazunori Kohri,Shinichi Nakasuka,Wataru Hikida,Hideo Matsuhara,Isao Naito,Tomotada Akutsu,Shijun Yoshida,Nobuyuki Matsumoto,Masa-aki Sakagami,Naoko Ohishi,Ikkoh Funaki,Hajime Sotani,Taizoh Yoshino,Atsushi Taruya,Mutsuko Y. Morimoto,E. Nishida,Atsushi J. Nishizawa,Hideki Asada,Toshiyuki Morisawa,Shinji Mukohyama,Shuichi Sato,Keisuke Taniguchi,Yousuke Itoh,Shinji Tsujikawa,Rieko Suzuki,Keiko Kokeyama,Misao Sasaki,Naoki Seto,Koji Ishidoshiro,Ryutaro Takahashi,Shin-ichiro Sakai,Hiroyuki Tashiro,Motoyuki Saijo,Naoko Kishimoto,Masaki Ando,Akitoshi Ueda,Koh-suke Aoyanagi,Yoshihide Kozai,Masayoshi Utashima,Yoshito Niwa,Jun'ichi Yokoyama,Nobuyuki Tanaka,Akito Araya +144 more
Journal ArticleDOI
Gravitational Wave Spectrum Induced by Primordial Scalar Perturbations
TL;DR: In this paper, the authors derived the complete spectrum of gravitational waves induced by primordial scalar perturbations ranging over all observable wavelengths and showed that the spectrum is scale invariant on small scales, but has an interesting scale dependence on large and intermediate scales, where scalar-induced gravitational waves do not redshift and are hence enhanced relative to the background density of the Universe.
Journal ArticleDOI
The Japanese space gravitational wave antenna?DECIGO
Seiji Kawamura,Masaki Ando,Takashi Nakamura,K. Tsubono,Takahiro Tanaka,I. Funaki,Naoki Seto,Kenji Numata,Shuichi Sato,Kunihito Ioka,Nobuyuki Kanda,T. Takashima,Kazuhiro Agatsuma,Tomotada Akutsu,Koh-suke Aoyanagi,Koji Arai,Y. Arase,Akito Araya,Hideki Asada,Yoichi Aso,Takeshi Chiba,Toshikazu Ebisuzaki,Motohiro Enoki,Yoshiharu Eriguchi,Masa-Katsu Fujimoto,Ryuichi Fujita,Mitsuhiro Fukushima,Toshifumi Futamase,Katsuhiko Ganzu,Tomohiro Harada,Tatsuaki Hashimoto,Kazuhiro Hayama,Wataru Hikida,Yoshiaki Himemoto,Hisashi Hirabayashi,Takashi Hiramatsu,Feng-Lei Hong,Hideyuki Horisawa,Mizuhiko Hosokawa,Kiyotomo Ichiki,Takeshi Ikegami,Kaiki Taro Inoue,Koji Ishidoshiro,Hideki Ishihara,Takehiko Ishikawa,Hideharu Ishizaki,Hiroyuki Ito,Yousuke Itoh,S. Kamagasako,Nobuki Kawashima,Fumiko Kawazoe,Hiroyuki Kirihara,Naoko Kishimoto,Kenta Kiuchi,Shiho Kobayashi,Kazunori Kohri,Hiroyuki Koizumi,Yasufumi Kojima,Keiko Kokeyama,Wataru Kokuyama,Kei Kotake,Yoshihide Kozai,Hideaki Kudoh,Hiroo Kunimori,H. Kuninaka,Kazuaki Kuroda,Keiichi Maeda,Hideo Matsuhara,Yasushi Mino,Osamu Miyakawa,Shinji Miyoki,Mutsuko Y. Morimoto,T. Morioka,Toshiyuki Morisawa,Shigenori Moriwaki,Shinji Mukohyama,Mitsuru Musha,Shigeo Nagano,Isao Naito,N. Nakagawa,Kouji Nakamura,Hiroyuki Nakano,Ken-ichi Nakao,Shinichi Nakasuka,Yoshinori Nakayama,E. Nishida,Kazutaka Nishiyama,Atsushi J. Nishizawa,Yoshito Niwa,Masatake Ohashi,Naoko Ohishi,Masashi Ohkawa,Akira Okutomi,Kouji Onozato,K. Oohara,Norichika Sago,Motoyuki Saijo,Masa-aki Sakagami,Shin-ichiro Sakai,Shihori Sakata,Misao Sasaki,Takashi Sato,Masaru Shibata,Hisa-aki Shinkai,Kentaro Somiya,Hajime Sotani,Naoshi Sugiyama,Yudai Suwa,Hideyuki Tagoshi,Kakeru Takahashi,Tadayuki Takahashi,Hirotaka Takahashi,Ryuichi Takahashi,Akiteru Takamori,Tetsushi Takano,Keisuke Taniguchi,Atsushi Taruya,Hiroyuki Tashiro,M. Tokuda,Masao Tokunari,Morio Toyoshima,Shinji Tsujikawa,Yoshiki Tsunesada,Ken-ichi Ueda,Masayoshi Utashima,Hiroshi Yamakawa,Kazuhiro Yamamoto,Toshitaka Yamazaki,Jun'ichi Yokoyama,Chul-Moon Yoo,Shijun Yoshida,Taizoh Yoshino +131 more
TL;DR: DECi-hertz Interferometer Gravitational wave Observatory (DECIGO) as discussed by the authors is the future Japanese space gravitational wave antenna, which aims at detecting various kinds of gravitational waves between 1 mHz and 100 Hz frequently enough to open a new window of observation for gravitational wave astronomy.
Journal ArticleDOI
LiteBIRD: A Satellite for the Studies of B-Mode Polarization and Inflation from Cosmic Background Radiation Detection
Masashi Hazumi,Peter A. R. Ade,Y. Akiba,David Alonso,Kam Arnold,Jonathan Aumont,Carlo Baccigalupi,Darcy Barron,Soumen Basak,Soumen Basak,S. Beckman,Julian Borrill,Julian Borrill,F. Boulanger,Martin Bucher,Erminia Calabrese,Yuji Chinone,Yuji Chinone,Seongjae Cho,A. Cukierman,D. W. Curtis,T. de Haan,M. A. Dobbs,A. Dominjon,Tadayasu Dotani,L. Duband,A. Ducout,Jo Dunkley,Jo Dunkley,J. M. Duval,Tucker Elleflot,H. K. Eriksen,Josquin Errard,J. Fischer,T. Fujino,T. Funaki,U. Fuskeland,K. Ganga,Neil Goeckner-Wald,J. Grain,N. W. Halverson,T. Hamada,T. Hasebe,Masaya Hasegawa,Kaori Hattori,Makoto Hattori,L. Hayes,N. Hidehira,Charles A. Hill,Charles A. Hill,Gene C. Hilton,Johannes Hubmayr,Kiyotomo Ichiki,Toshiaki Iida,H. Imada,M. Inoue,Yuki Inoue,Kent D. Irwin,Hirokazu Ishino,Oliver Jeong,H. Kanai,D. Kaneko,Shingo Kashima,Nobuhiko Katayama,T. Kawasaki,S. A. Kernasovskiy,Reijo Keskitalo,Reijo Keskitalo,A. Kibayashi,Y. Kida,Kimihiro Kimura,Theodore Kisner,Theodore Kisner,Kazunori Kohri,Eiichiro Komatsu,K. Komatsu,Chao-Lin Kuo,Noah Kurinsky,Akito Kusaka,Akito Kusaka,Alex Lazarian,Adrian T. Lee,Adrian T. Lee,Dale Li,Eric V. Linder,Eric V. Linder,Bruno Maffei,Anna Mangilli,M. Maki,Tomotake Matsumura,Shuji Matsuura,D. Meilhan,Satoru Mima,Yuto Minami,Kazuhisa Mitsuda,L. Montier,M. Nagai,T. Nagasaki,R. Nagata,M. Nakajima,Shogo Nakamura,Toshiya Namikawa,Masato Naruse,H. Nishino,Tom Nitta,Takashi Noguchi,Hideo Ogawa,Shugo Oguri,Norio Okada,Atsushi Okamoto,Takahiro Okamura,Chiko Otani,G. Patanchon,Giampaolo Pisano,Gabriel M. Rebeiz,Mathieu Remazeilles,Paul L. Richards,Shin-ichiro Sakai,Yuki Sakurai,Y. Sato,N. Sato,Makoto Sawada,Y. Segawa,Yutaro Sekimoto,Yutaro Sekimoto,Uroš Seljak,Blake D. Sherwin,Blake D. Sherwin,Toshifumi Shimizu,Keisuke Shinozaki,R. Stompor,Hajime Sugai,Hiroyuki Sugita,Aritoki Suzuki,Jun-ichi Suzuki,Osamu Tajima,Suguru Takada,R. Takaku,S. Takakura,S. Takatori,D. Tanabe,E. Taylor,K. L. Thompson,B. Thorne,B. Thorne,Takayuki Tomaru,T. Tomida,N. Tomita,M. Tristram,Carole Tucker,Paul Turin,Masahiro Tsujimoto,S. Uozumi,Shin Utsunomiya,Yoshinori Uzawa,F. Vansyngel,Ingunn Kathrine Wehus,Benjamin Westbrook,M. Willer,Nathan Whitehorn,Yasuhiro Yamada,Ryo Yamamoto,Noriko Y. Yamasaki,T. Yamashita,Mitsuhiro Yoshida +164 more
TL;DR: LiteBIRD as mentioned in this paper is a candidate satellite for a strategic large mission of JAXA, which aims to map the polarization of the cosmic microwave background radiation over the full sky with unprecedented precision.
Journal ArticleDOI
The status of DECIGO
Shuichi Sato,Seiji Kawamura,Masaki Ando,Takashi Nakamura,K. Tsubono,Akito Araya,Ikkoh Funaki,Kunihito Ioka,Nobuyuki Kanda,Shigenori Moriwaki,Mitsuru Musha,Kazuhiro Nakazawa,Kenji Numata,Shin-ichiro Sakai,Naoki Seto,Takeshi Takashima,Takahiro Tanaka,Kazuhiro Agatsuma,Koh Suke Aoyanagi,Koji Arai,Hideki Asada,Yoichi Aso,Takeshi Chiba,Toshikazu Ebisuzaki,Yumiko Ejiri,Motohiro Enoki,Yoshiharu Eriguchi,Masa Katsu Fujimoto,Ryuichi Fujita,Mitsuhiro Fukushima,Toshifumi Futamase,Katsuhiko Ganzu,Tomohiro Harada,Tatsuaki Hashimoto,K. Hayama,Wataru Hikida,Yoshiaki Himemoto,Hisashi Hirabayashi,Takashi Hiramatsu,Feng-Lei Hong,Hideyuki Horisawa,Mizuhiko Hosokawa,Kiyotomo Ichiki,Takeshi Ikegami,Kaiki Taro Inoue,Koji Ishidoshiro,Hideki Ishihara,Takehiko Ishikawa,Hideharu Ishizaki,Hiroyuki Ito,Yousuke Itoh,Nobuki Kawashima,Fumiko Kawazoe,Naoko Kishimoto,Kenta Kiuchi,Shiho Kobayashi,Kazunori Kohri,Hiroyuki Koizumi,Yasufumi Kojima,Keiko Kokeyama,Wataru Kokuyama,Kei Kotake,Yoshihide Kozai,Hideaki Kudoh,Hiroo Kunimori,Hitoshi Kuninaka,Kazuaki Kuroda,Keiichi Maeda,Hideo Matsuhara,Yasushi Mino,Osamu Miyakawa,Shinji Miyoki,Mutsuko Y. Morimoto,T. Morioka,Toshiyuki Morisawa,Shinji Mukohyama,Shigeo Nagano,Isao Naito,Kouji Nakamura,Hiroyuki Nakano,Ken-ichi Nakao,Shinichi Nakasuka,Yoshinori Nakayama,E. Nishida,Kazutaka Nishiyama,Atsushi J. Nishizawa,Yoshito Niwa,Taiga Noumi,Yoshiyuki Obuchi,Masatake Ohashi,Naoko Ohishi,Masashi Ohkawa,Norio Okada,Kouji Onozato,Ken-ichi Oohara,Norichika Sago,Motoyuki Saijo,Masa-aki Sakagami,S. Sakata,Misao Sasaki,Takashi Sato,Masaru Shibata,Hisa-aki Shinkai,Kentaro Somiya,Hajime Sotani,Naoshi Sugiyama,Yudai Suwa,Rieko Suzuki,Hideyuki Tagoshi,Fuminobu Takahashi,Kakeru Takahashi,Keitaro Takahashi,Ryutaro Takahashi,Ryuichi Takahashi,Tadayuki Takahashi,Hirotaka Takahashi,Takamori Akiteru,Tadashi Takano,Keisuke Taniguchi,Atsushi Taruya,Hiroyuki Tashiro,Yasuo Torii,Morio Toyoshima,Shinji Tsujikawa,Yoshiki Tsunesada,Akitoshi Ueda,Ken-ichi Ueda,Masayoshi Utashima,Yaka Wakabayashi,Hiroshi Yamakawa,Kazuhiro Yamamoto,Toshitaka Yamazaki,Jun'ichi Yokoyama,Chul-Moon Yoo,Shijun Yoshida,Taizoh Yoshino +135 more
TL;DR: DECIGO (DECi-hertz Interferometer Gravitational wave Observatory) is the planned Japanese space gravitational wave antenna, aiming to detect gravitational waves from astrophysically and cosmologically significant sources mainly between 1 Hz and 10 Hz as mentioned in this paper.