Zobrazeno 1 - 10
of 66
pro vyhledávání: '"Saijo, Motoyuki"'
Autor:
Kawamura, Seiji, Ando, Masaki, Seto, Naoki, Sato, Shuichi, Musha, Mitsuru, Kawano, Isao, Yokoyama, Jun'ichi, Tanaka, Takahiro, Ioka, Kunihito, Akutsu, Tomotada, Takashima, Takeshi, Agatsuma, Kazuhiro, Araya, Akito, Aritomi, Naoki, Asada, Hideki, Chiba, Takeshi, Eguchi, Satoshi, Enoki, Motohiro, Fujimoto, Masa-Katsu, Fujita, Ryuichi, Futamase, Toshifumi, Harada, Tomohiro, Hayama, Kazuhiro, Himemoto, Yoshiaki, Hiramatsu, Takashi, Hong, Feng-Lei, Hosokawa, Mizuhiko, Ichiki, Kiyotomo, Ikari, Satoshi, Ishihara, Hideki, Ishikawa, Tomohiro, Itoh, Yousuke, Ito, Takahiro, Iwaguchi, Shoki, Izumi, Kiwamu, Kanda, Nobuyuki, Kanemura, Shinya, Kawazoe, Fumiko, Kobayashi, Shiho, Kohri, Kazunori, Kojima, Yasufumi, Kokeyama, Keiko, Kotake, Kei, Kuroyanagi, Sachiko, Maeda, Kei-ichi, Matsushita, Shuhei, Michimura, Yuta, Morimoto, Taigen, Mukohyama, Shinji, Nagano, Koji, Nagano, Shigeo, Naito, Takeo, Nakamura, Kouji, Nakamura, Takashi, Nakano, Hiroyuki, Nakao, Kenichi, Nakasuka, Shinichi, Nakayama, Yoshinori, Nakazawa, Kazuhiro, Nishizawa, Atsushi, Ohkawa, Masashi, Oohara, Kenichi, Sago, Norichika, Saijo, Motoyuki, Sakagami, Masaaki, Sakai, Shin-ichiro, Sato, Takashi, Shibata, Masaru, Shinkai, Hisaaki, Shoda, Ayaka, Somiya, Kentaro, Sotani, Hajime, Takahashi, Ryutaro, Takahashi, Hirotaka, Akiteru, Takamori, Taniguchi, Keisuke, Taruya, Atsushi, Tsubono, Kimio, Tsujikawa, Shinji, Ueda, Akitoshi, Ueda, Ken-ichi, Watanabe, Izumi, Yagi, Kent, Yamada, Rika, Yokoyama, Shuichiro, Yoo, Chul-Moon, Zhu, Zong-Hong
Deci-hertz Interferometer Gravitational Wave Observatory (DECIGO) is the future Japanese space mission with a frequency band of 0.1 Hz to 10 Hz. DECIGO aims at the detection of primordial gravitational waves, which could be produced during the inflat
Externí odkaz:
http://arxiv.org/abs/2006.13545
Autor:
Saijo, Motoyuki
We investigate the nature of low T/W dynamical instabilities in various ranges of the stiffness of the equation of state in differentially rotating stars. Here T is the rotational kinetic energy, while W the gravitational binding energy. We analyze t
Externí odkaz:
http://arxiv.org/abs/1807.00841
Autor:
Yoshida, Shin'ichirou, Saijo, Motoyuki
We investigate the nature of so-called low $T/W$ dynamical instability in a differentially rotating star by focusing on the role played by the corotation radius of the unstable oscillation modes. An one dimensional model of linear perturbation, which
Externí odkaz:
http://arxiv.org/abs/1611.09974
Autor:
Saijo, Motoyuki, Yoshida, Shin'ichirou
Publikováno v:
Phys.Rev.D94:084032,2016
We investigate the nature of low T/W dynamical instabilities in differentially rotating stars by means of linear perturbation. Here, T and W represent rotational kinetic energy and the gravitational binding energy of the star. This is the first attem
Externí odkaz:
http://arxiv.org/abs/1610.05328
Autor:
Saijo, Motoyuki
Publikováno v:
Phys.Rev.D83:124031,2011
We have investigated several properties of rapidly rotating dynamic black holes generated by gravitational collapse of rotating relativistic stars. At present, numerical simulations of the binary black hole merger are able to produce a Kerr black hol
Externí odkaz:
http://arxiv.org/abs/1106.1922
Autor:
Saijo, Motoyuki, Hawke, Ian
Publikováno v:
Phys.Rev.D80:064001,2009
We investigate the collapse of differentially rotating supermassive stars (SMSs) by means of 3+1 hydrodynamic simulations in general relativity. We particularly focus on the onset of collapse to understand the final outcome of collapsing SMSs. We fin
Externí odkaz:
http://arxiv.org/abs/0908.3002
Autor:
Kojima, Yasufumi, Saijo, Motoyuki
Publikováno v:
Phys.Rev.D78:124001,2008
Nonlinear growth of the bar-mode deformation is studied for a differentially rotating star with supercritical rotational energy. In particular, the growth mechanism of some azimuthal modes with odd wave numbers is examined by comparing a simplified m
Externí odkaz:
http://arxiv.org/abs/0811.2645
Autor:
Saijo, Motoyuki, Kojima, Yasufumi
Publikováno v:
Phys.Rev.D77:063002,2008
We investigate the nonlinear behaviour of the dynamically unstable rotating star for the bar mode by three-dimensional hydrodynamics in Newtonian gravity. We find that an oscillation along the rotation axis is induced throughout the growth of the uns
Externí odkaz:
http://arxiv.org/abs/0802.2277
Autor:
Saijo, Motoyuki, Gourgoulhon, Eric
Publikováno v:
Phys.Rev. D74 (2006) 084006
We investigate the viscosity driven instability in rotating relativistic stars by means of an iterative approach. We focus on polytropic rotating equilibrium stars and impose an m=2 perturbationin the lapse. We vary both the stiffness of the equation
Externí odkaz:
http://arxiv.org/abs/astro-ph/0606569
Autor:
Saijo, Motoyuki, Yoshida, Shin'ichirou
We study the nature of non-axisymmetric dynamical instabilities in differentially rotating stars with both linear eigenmode analysis and hydrodynamic simulations in Newtonian gravity. We especially investigate the following three types of instability
Externí odkaz:
http://arxiv.org/abs/astro-ph/0604146