A hybrid space–time of Schwarzschild interior and Vaidya–Tikekar solution as an embedding class I
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- 作者：N. Pant ; K. N. Singh ; N. Pradhan
- 关键词：General relativity ; Exact solution ; Embedding class I ; Anisotropy ; Compact stars
- 刊名：Indian Journal of Physics
- 出版年：2017
- 出版时间：March 2017
- 年：2017
- 卷：91
- 期：3
- 页码：343-350
- 全文大小：
- 刊物类别：Physics and Astronomy
- 刊物主题：Physics, general; Astrophysics and Astroparticles;
- 出版者：Springer India
- ISSN：0974-9845
- 卷排序：91
文摘
A new type of embedding class-I metric representing anisotropic fluid distribution is presented in this paper. The new solution satisfies TOV equation and does represent a static stellar configuration. This new solution is an interesting hybrid solution where gtt is of Schwarzschild interior and grr is of Vaidya–Tikekar. The new solution satisfies all the physical criteria like positive finite central pressure, density, causality condition etc. It also satisfies all the energy conditions such as SEC, WEC, NEC and DEC. Using this new solution, we have presented some compact star models for Her X-1, RX J1856.5-3754, Cyg X-2 and PSR J1614-2230 by optimizing their masses and radii.