405 citations · 2.7k across the 85 of their papers we have counts for
7 papers · 1 filter
Perturbative Analysis of a Stationary Magnetosphere in an Extreme Black Hole Spacetime : On the Meissner-like Effect of an Extreme Black Hole
Yohsuke Takamori, Ken-ichi Nakao, Hideki Ishihara +2
It is known that the Meissner-like effect is seen in a magnetosphere without an electric current in black hole spacetime: no non-monopole component of magnetic flux penetrates the…
A Note on the Inverse Problem with LTB Universes
Chul-Moon Yoo
The inverse problem with Lemaître-Tolman-Bondi (LTB) universe models is discussed. The LTB solution for the Einstein equations describes the spherically symmetric dust-filled space…
Redshift Drift in LTB Void Universes
Chul-Moon Yoo, Tomohiro Kai, Ken-ichi Nakao
We study the redshift drift, i.e., the time derivative of the cosmological redshift in the Lemaître-Tolman-Bondi (LTB) solution in which the observer is assumed to be located at th…
CMB observations in LTB universes: Part II: the kSZ effect in an LTB universe
Chul-Moon Yoo, Ken-ichi Nakao, Misao Sasaki
We study the kinematic Sunyaev-Zel'dovich (kSZ) effect in a Lemître-Tolman-Bondi (LTB) universe model whose distance-redshift relation agrees with that of the concordance CDM mo…
Notes on the Hidden Conformal Symmetry in the Near Horizon Geometry of the Kerr Black Hole
Yoshinori Matsuo, Takuya Tsukioka, Chul-Moon Yoo
Toward the Kerr/CFT correspondence for generic non-extremal Kerr black hole, the analysis of scattering amplitudes by near extremal Kerr provides a clue. This pursuit reveals a hid…
Analytical model for CMB temperature angular power spectrum from cosmic (super-)strings
Daisuke Yamauchi, Keitaro Takahashi, Yuuiti Sendouda +2
We present a new analytical method to calculate the small angle CMB temperature angular power spectrum due to cosmic (super-)string segments. In particular, using our method, we cl…