activity
19952026
most citedKAGRA: 2.5 Generation Interferometric Gravitational Wave Detector

535 citations · 2k across the 66 of their papers we have counts for

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6 papers · 1 filter

astro-ph2000★ 25 cited

General Relativistic Modification of a Pulsar Electromagnetic Field

Kohkichi Konno, Yasufumi Kojima

We consider an exterior electromagnetic field surrounding a rotating star endowed with a dipole magnetic field in the context of general relativity. The analytic solution for a sta…

astro-ph2000★ 6 cited

Profiles and Polarization Properties of Emission Lines from Relativistic Disks

Jun Ogura, Nobuyori Ohuo, Yasufumi Kojima

We examined the profiles and polarization properties of emission lines originating from the extremely relativistic region of Kepler disks. Because the emission region is more local…

gr-qc2000★ 15 cited

Approximate equation relevant to axial oscillations on slowly rotating relativistic stars

Yasufumi Kojima, Masayasu Hosonuma

Axial oscillations relevant to the r-mode instability are studied with slow rotation formalism in general relativity. The approximate equation governing the oscillations is derived…

astro-ph2000

Stability of Relativistic Blast Waves

Jun Ogura, Yasufumi Kojima

A spherical blast wave with relativistic velocity can be described by a similarity solution, that is used for theoretical models of gamma-ray bursts. We consider the linear stabili…

gr-qc2000★ 1 cited

Gravitational Waves from Relativistic Stars

Yasufumi Kojima

Stellar pulsations in rotating relativistic stars are reviewed. Slow rotation approximation is applied to solving the Einstein equations. The rotational effects on the non-axisymme…

astro-ph2000

Flattening modulus of a neutron star by rotation and magnetic field

K. Konno, T. Obata, Y. Kojima

We calculated the ellipticity of the deformed star due to the rotation or magnetic field. These two effects are compared to each other within general relativity. It turned out that…