Probing the central engine of long gamma-ray bursts and hypernovae with gravitational waves (2009)
There are the two common candidates as the viable energy source for the central engine of long gamma-ray bursts (GRBs) and hypernovae (HNe), neutrino annihilation and magnetic fields. We investigate...
Ando, Masaki, Kawamura, Seiji, Sato, Shuichi, Nakamura, Takashi, Tsubono, Kimio, Araya, Akito, ...
DECIGO pathfinder (DPF) is a milestone satellite mission for DECIGO (DECi-hertz Interferometer Gravitational wave Observatory), which is a future space gravitational wave antenna. DECIGO is expected...
Non-thermal neutrinos from supernovae leaving a magnetar (2008)
Horiuchi, Shunsaku, Suwa, Yudai, Takami, Hajime, Ando, Shin'ichiro, Sato, Katsuhiko
Under the fossil field hypothesis of the origin of magnetar magnetic fields, the magnetar inherits its magnetic field from its progenitor. We show that during the supernova of such a progenitor,...
Ando, Masaki, Kawamura, Seiji, Nakamura, Takashi, Tsubono, Kimio, Tanaka, Takahiro, Funaki, Ikkoh, ...
DECIGO pathfinder (DPF) is a milestone satellite mission for DECIGO (DECi-hertz Interferometer Gravitational wave Observatory) which is a future space gravitational wave antenna. DECIGO is expected...
The Japanese space gravitational wave antenna; DECIGO (2008)
Kawamura, Seiji, Ando, Masaki, Nakamura, Takashi, Tsubono, Kimio, Tanaka, Takahiro, Funaki, Ikkoh, ...
DECi-hertz Interferometer Gravitational wave Observatory (DECIGO) is the future Japanese space gravitational wave antenna. DECIGO is expected to open a new window of observation for gravitational...
Non-thermal neutrinos from supernovae leaving a magnetar (2008)
Horiuchi, Shunsaku, Suwa, Yudai, Takami, Hajime, Ando, Shin'ichiro, Sato, Katsuhiko
Under the fossil field hypothesis of the origin of magnetar magnetic fields, the magnetar inherits its magnetic field from its progenitor. We show that during the supernova of such a progenitor,...
Suwa, Yudai, Takiwaki, Tomoya, Kotake, Kei, Sato, Katsuhiko
We study the effects of rotation on the neutrino emission from Population III (Pop III) stars by performing a series of two-dimensional rotational collapse simulations of Pop III stellar cores. Our...
Probing reheating temperature of the universe with gravitational wave background (2008)
Nakayama, Kazunori, Saito, Shun, Suwa, Yudai, Yokoyama, Jun'ichi
Thermal history of the universe after big-bang nucleosynthesis (BBN) is well understood both theoretically and observationally, and recent cosmological observations also begin to reveal the...
Space laser interferometers can determine the thermal history of the early Universe (2008)
Nakayama, Kazunori, Saito, Shun, Suwa, Yudai, Yokoyama, Jun'ichi
It is shown that space-based gravitational wave detectors such as DECIGO and/or Big Bang Observer (BBO) will provide us with invaluable information on the cosmic thermal history after inflation and...
Gravitational Wave Background from Population III Stars (2007)
Suwa, Yudai, Takiwaki, Tomoya, Kotake, Kei, Sato, Katsuhiko
We estimate the gravitational wave (GW) background from Population III (Pop III) stars using the results from our hydrodynamic simulations (Suwa et al. 2007). We calculate gravitational waveforms...
Magnetorotational Collapse of Population III Stars (2007)
Suwa, Yudai, Takiwaki, Tomoya, Kotake, Kei, Sato, Katsuhiko
We perform a series of two-dimensional magnetorotational core-collapse simulations of Pop III stars. Changing the initial distributions of rotation and magnetic fields prior to collapse in a...