Zobrazeno 1 - 10
of 342
pro vyhledávání: '"Takeda, Hiroki"'
Autor:
Takeda, Hiroki, Tanaka, Takahiro
We explore the impact of corrections to the propagation on the waveforms of gravitationally lensed gravitational waves under the geometrical optics approximation, focusing on both uniform cosmological modifications and local modifications localized a
Externí odkaz:
http://arxiv.org/abs/2404.10809
In nonminimally coupled theories where a scalar field is coupled to the Ricci scalar, neutron stars (NSs) can have scalar charges through an interaction with matter mediated by gravity. On the other hand, the same theories do not give rise to hairy b
Externí odkaz:
http://arxiv.org/abs/2311.09281
We propose a novel method for distinguishing the spin of ultralight dark matter (ULDM) using interferometric gravitational wave detectors. ULDM can be a bosonic field of spin-0, 1, or 2, and each induces distinctive signatures in signals. We find tha
Externí odkaz:
http://arxiv.org/abs/2310.10646
Publikováno v:
Prog Theor Exp Phys (2023)
Scalar polarization modes of gravitational waves, which are often introduced in the context of the viable extension of gravity, have been actively searched. However, couplings of the scalar modes to the matter are strongly constrained by the fifth-fo
Externí odkaz:
http://arxiv.org/abs/2304.14430
Autor:
Takeda, Hiroki, Isobe, Atsuhiko
Publikováno v:
In Marine Pollution Bulletin November 2024 208
An additional scalar degree of freedom for a gravitational wave is often predicted in theories of gravity beyond general relativity and can be used for a model-agnostic test of gravity. In this letter, we report the direct search for the scalar-tenso
Externí odkaz:
http://arxiv.org/abs/2105.00253
Publikováno v:
In Hearing Research 1 March 2024 443
Publikováno v:
Phys. Rev. D 103, 064037 (2021)
The physical degrees of freedom of a gravitational wave (GW) are imprints of the nature of gravity. We can test a gravity theory by searching for polarization modes beyond general relativity. The LIGO-Virgo collaboration analyzed several GW events in
Externí odkaz:
http://arxiv.org/abs/2010.14538
A dual-pass differential Fabry-Perot interferometer (DPDFPI) is one candidate of the interferometer configurations utilized in future Fabry-Perot type space gravitational wave antennas, such as Deci-hertz Interferometer Gravitational Wave Observatory
Externí odkaz:
http://arxiv.org/abs/2008.12462
Autor:
Akutsu, Tomotada, Arellano, Fabián Erasmo Peña, Shoda, Ayaka, Fujii, Yoshinori, Okutomi, Koki, Barton, Mark Andrew, Takahashi, Ryutaro, Komori, Kentaro, Aritomi, Naoki, Shimoda, Tomofumi, Takano, Satoru, Takeda, Hiroki, Martin, Enzo Nicolas Tapia San, Kozu, Ryohei, Ikenoue, Bungo, Obuchi, Yoshiyuki, Fukushima, Mitsuhiro, Aso, Yoichi, Michimura, Yuta, Miyakawa, Osamu, Kamiizumi, Masahiro
Publikováno v:
Review of Scientific Instruments 91, 115001 (2020)
This paper reports on the design and characteristics of a compact module integrating an optical displacement sensor and an electromagnetic actuator for use with vibration-isolation systems installed in KAGRA, the 3-km baseline gravitational-wave dete
Externí odkaz:
http://arxiv.org/abs/2007.09571