160 citations · 450 across the 5 of their papers we have counts for
5 papers
Massive quasi-normal mode
Akira Ohashi, Masa-aki Sakagami
This paper purposes to study quasi-normal modes due to massive scalar fields. We, in particular, investigate the dependence of QNM frequencies on the field mass. By this research,…
Multipole particle in relativity
Akira Ohashi
We discuss the motion of extended objects in a spacetime by considering a gravitational field created by these objects. We define multipole moments of the objects as a classificati…
Hawking Radiation in Laboratories
Masa-aki Sakagami, Akira Ohashi
We propose an experimental model using the Laval nozzle of a sonic analogue of the Hawking radiation. We observe a power spectrum of the out-going wave emitted from the vicinity a…
Gravitational field and equations of motion of spinning compact binaries to 2.5 post-Newtonian order
Hideyuki Tagoshi, Akira Ohashi, Benjamin J. Owen
We derive spin-orbit coupling effects on the gravitational field and equations of motion of compact binaries in the 2.5 post-Newtonian approximation to general relativity, one PN o…
Non-precessional spin-orbit effects on gravitational waves from inspiraling compact binaries to second post-Newtonian order
Benjamin J. Owen, Hideyuki Tagoshi, Akira Ohashi
We derive all second post-Newtonian (2PN), non-precessional effects of spin- orbit coupling on the gravitational wave forms emitted by an inspiraling binary composed of spinning, c…