Possible Alternatives to the Supermassive Black Hole at the Galactic Center
文献类型：期刊论文
| 作者 | Zakharov, A. F.1,2,3,4,5 |
| 刊名 | JOURNAL OF ASTROPHYSICS AND ASTRONOMY
 |
| 出版日期 | 2015-12-01 |
| 卷号 | 36期号:4页码:539-553 |
| 关键词 | Black holes supermassive black holes gravitational lensing the Galactic Center large telescopes VLBI interferometry |
| 英文摘要 | Now there are two basic observational techniques to investigate a gravitational potential at the Galactic Center, namely, (a) monitoring the orbits of bright stars near the Galactic Center to reconstruct a gravitational potential; (b) measuring the size and shape of shadows around black hole giving an alternative possibility to evaluate black hole parameters in mm-band with VLBI-technique. At the moment, one can use a small relativistic correction approach for stellar orbit analysis (however, in the future the approximation will not be precise enough due to enormous progress of observational facilities) while for smallest structure analysis in VLBI observations one really needs a strong gravitational field approximation. We discuss results of observations, their conventional interpretations, tensions between observations and models and possible hints for a new physics from the observational data and tensions between observations and interpretations. We discuss an opportunity to use a Schwarzschild metric for data interpretation or we have to use more exotic models such as Reissner-Nordstrom or Schwarzschild-de-Sitter metrics for better fits. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000368698700011 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/5329]  |
| 专题 | 国家天文台_光学天文研究部 |
| 作者单位 | 1.Chinese Acad Sci, Natl Astron Observ, Datun Rd 20A, Beijing 100012, Peoples R China 2.Inst Theoret & Expt Phys, Moscow 117218, Russia 3.Joint Inst Nucl Res, Bogoliubov Lab Theoret Phys, Dubna 141980, Russia 4.Natl Res Nucl Univ, MEPhI Moscow Engn Phys Inst, Moscow 115409, Russia 5.N Carolina Cent Univ, Durham, NC 27707 USA |
| 推荐引用方式 GB/T 7714 | Zakharov, A. F.. Possible Alternatives to the Supermassive Black Hole at the Galactic Center[J]. JOURNAL OF ASTROPHYSICS AND ASTRONOMY,2015,36(4):539-553. |
| APA | Zakharov, A. F..(2015).Possible Alternatives to the Supermassive Black Hole at the Galactic Center.JOURNAL OF ASTROPHYSICS AND ASTRONOMY,36(4),539-553. |
| MLA | Zakharov, A. F.."Possible Alternatives to the Supermassive Black Hole at the Galactic Center".JOURNAL OF ASTROPHYSICS AND ASTRONOMY 36.4(2015):539-553. |
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来源：国家天文台
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