3 papers
gr-qc2020
The First Order Symmetry Operator on Gravitational Perturbations in the 5-dimensional Myers-Perry Spacetime with Equal Angular Momenta
Masataka Tsuchiya, Tsuyoshi Houri, Chul-Moon Yoo
It has been revealed that the first order symmetry operator for the linearized Einstein equation on a vacuum spacetime can be constructed from a Killing-Yano 3-form. This might be…
gr-qc2020
Sonic Point and Photon Surface
Masataka Tsuchiya, Chul-Moon Yoo, Yasutaka Koga +1
The sonic point/photon surface correspondence is thoroughly investigated in a general setting. First, we investigate a sonic point of a transonic steady perfect fluid flow in a gen…
gr-qc2018
Rigidly Rotating String Sticking in a Kerr Black Hole
Takahisa Igata, Hideki Ishihara, Masataka Tsuchiya +1
We analyze rigidly rotating Nambu--Goto strings in the Kerr spacetime, particularly focusing on the strings sticking in the horizon. From the regularity on the horizon, we find the…