2017年6月
Extension of photon surfaces and their area: Static and stationary spacetimes
PROGRESS OF THEORETICAL AND EXPERIMENTAL PHYSICS
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- 巻
- 号
- 6
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1093/ptep/ptx072
- 出版者・発行元
- OXFORD UNIV PRESS INC
We propose a new concept, the transversely trapping surface (TTS), as an extension of the static photon surface characterizing the strong gravity region of a static/stationary spacetime in terms of photon behavior. The TTS is defined as a static/stationary timelike surface S whose spatial section is a closed two-surface, such that arbitrary photons emitted tangentially to S from arbitrary points on S propagate on or toward the inside of S. We study the properties of TTSs for static spacetimes and axisymmetric stationary spacetimes. In particular, the area A(0) of a TTS is proved to be bounded as A0 <= 4 pi(3GM)(2) under certain conditions, where G is the Newton constant and M is the total mass. The connection between the TTS and the loosely trapped surface proposed by us [Prog. Theor. Exp. Phys. 2017, 033E01 (2017)] is also examined.
- リンク情報
- ID情報
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- DOI : 10.1093/ptep/ptx072
- ISSN : 2050-3911
- Web of Science ID : WOS:000405375200015