| 摘要: |
| 研究带有de Sitter中心的球对称黑洞在标量场扰动下的拟正则模.几何上来讲,这种黑洞在半径r很大的时候趋近与史瓦西解形式,在r趋于0 的时候是de Sitter 解形式的.在这里通过变化参数r0(它与宇宙学常数有关),角量子数l,泛音数n和黑洞质量M来研究这个黑洞的拟正则模ω.计算结果发现:拟正则模在随r0的变化出现极大值和极小值,同时对于一定范围的r0,当拟正则模随泛音数n变化时也会出现极值现象,这是值得关注的. |
| 关键词: 真空无奇点黑洞 拟正则模 6阶WKB近似 |
| DOI： |
| 分类号: |
| 基金项目:上海市自然科学基金项目(12ZR1421700) |
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| Quasinormal mode of a vacuum non-singular black hole:masslesss scalar perturbations |
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FENG Yonghui, LIU Daojun
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Shanghai United Center for Astrophysics,Shanghai Normal University
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| Abstract: |
| In this paper,we investigate quasinormal mode(QNM) of the spherically symmetric BH with de Sitter centre due to scalar perturbations.This BH is,geometrically,asymptotically Schwarzschild for large r and asymptotically de Sitter as r → 0.We analyze the QNM ω by varying the parameter r0 (it is related to cosmological constant),spherical harmonic index l,overtune n and the BH mass M.According to calculations,we find that the QNM Lhave maximum and minimum with a changing r0,and for some r0 it is worthy to attention that the QNM have extreme with a changing overtune n. |
| Key words: vacuum non-singular BH QNM 6-order WKB approximation |
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