### 抄録

We study the stability of circular orbits of spinning test particles in Kerr spacetime. We find that some of the circular orbits become unstable in the direction perpendicular to the equatorial plane, although the orbits are still stable in the radial direction. For the large spin case (Formula presented) the innermost stable circular orbit (ISCO) appears before the minimum of the effective potential in the equatorial plane disappears. This changes the radius of the ISCO and therefore the frequency of the last circular orbit.

元の言語 | English |
---|---|

ページ数 | 1 |

ジャーナル | Physical Review D - Particles, Fields, Gravitation and Cosmology |

巻 | 58 |

発行部数 | 2 |

DOI | |

出版物ステータス | Published - 1998 1 1 |

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### ASJC Scopus subject areas

- Nuclear and High Energy Physics
- Physics and Astronomy (miscellaneous)

### これを引用

**Innermost stable circular orbit of a spinning particle in Kerr spacetime.** / Suzuki, Shingo; Maeda, Keiichi.

研究成果: Article

}

TY - JOUR

T1 - Innermost stable circular orbit of a spinning particle in Kerr spacetime

AU - Suzuki, Shingo

AU - Maeda, Keiichi

PY - 1998/1/1

Y1 - 1998/1/1

N2 - We study the stability of circular orbits of spinning test particles in Kerr spacetime. We find that some of the circular orbits become unstable in the direction perpendicular to the equatorial plane, although the orbits are still stable in the radial direction. For the large spin case (Formula presented) the innermost stable circular orbit (ISCO) appears before the minimum of the effective potential in the equatorial plane disappears. This changes the radius of the ISCO and therefore the frequency of the last circular orbit.

AB - We study the stability of circular orbits of spinning test particles in Kerr spacetime. We find that some of the circular orbits become unstable in the direction perpendicular to the equatorial plane, although the orbits are still stable in the radial direction. For the large spin case (Formula presented) the innermost stable circular orbit (ISCO) appears before the minimum of the effective potential in the equatorial plane disappears. This changes the radius of the ISCO and therefore the frequency of the last circular orbit.

UR - http://www.scopus.com/inward/record.url?scp=84861165282&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84861165282&partnerID=8YFLogxK

U2 - 10.1103/PhysRevD.58.023005

DO - 10.1103/PhysRevD.58.023005

M3 - Article

AN - SCOPUS:84861165282

VL - 58

JO - Physical review D: Particles and fields

JF - Physical review D: Particles and fields

SN - 0556-2821

IS - 2

ER -