87 citations · 561 across the 20 of their papers we have counts for
9 papers · 1 filter
Gravitational wave search through electromagnetic telescopes
Asuka Ito, Kazunori Kohri, Kazunori Nakayama
We study the graviton-photon conversion in the magnetic fields of the Earth, the Milky Way Galaxy, and intergalactic regions. Requiring that the photon flux converted from graviton…
Probing high frequency gravitational waves with pulsars
Asuka Ito, Kazunori Kohri, Kazunori Nakayama
We study graviton-photon conversion in magnetosphere of a pulsar and explore the possibility of detecting high frequency gravitational waves with pulsar observations. It is shown t…
Exploring High Frequency Gravitational Waves with Magnons
Asuka Ito, Jiro Soda
Detecting gravitational waves with frequencies higher than 10 kHz requires new strategies. In previous papers, we proposed magnon gravitational wave detectors and gave the first li…
Inertial and gravitational effects on a geonium atom
Asuka Ito
We reveal all linear order inertial and gravitational effects on a non-relativistic Dirac particle (mass ) on the Earth up to the order of in the Foldy-Wouthuysen-like exp…
A formalism for magnon gravitational wave detectors
Asuka Ito, Jiro Soda
In order to detect high frequency gravitational waves, we need a new detection method. In this paper, we develop a formalism for a gravitational wave detector using magnons in a ca…
Pulsar timing residual induced by ultralight vector dark matter
Kimihiro Nomura, Asuka Ito, Jiro Soda
We study the ultralight vector dark matter with a mass around . The vector field oscillating coherently on galactic scales induces oscillations of the spacet…
Accelerating Universe with a stable extra dimension in cuscuton gravity
Asuka Ito, Yuki Sakakihara, Jiro Soda
We study Kaluza-Klein cosmology in cuscuton gravity and find an exact solution describing an accelerating 4-dimensional universe with a stable extra dimension. A cuscuton which is…
Probing GHz Gravitational Waves with Graviton-magnon Resonance
Asuka Ito, Tomonori Ikeda, Kentaro Miuchi +1
A novel method for extending frequency frontier in gravitational wave observations is proposed. It is shown that gravitational waves can excite a magnon. Thus, gravitational waves…
Searching for Bispectrum of Stochastic Gravitational Waves with Pulsar Timing Arrays
Makoto Tsuneto, Asuka Ito, Toshifumi Noumi +1
We study how to probe bispectra of stochastic gravitational waves with pulsar timing arrays. The bispectrum is a key to probe the origin of stochastic gravitational waves. In parti…