与观测数据一致的伪椭球时空上的致密星
Compact stars on pseudo-spheroidal spacetime compatible with observational data
摘要:
在伪球时空背景下,得到了静态球对称各向异性物质分布的爱因斯坦场方程的一类新解。我们已经规定了模型参数$ k $和$ p_0 $的界限的基础上的物理可接受性,即,规律性、稳定性和能量条件。通过从规定的范围内取模型参数的值,我们已经表明,我们的模型是兼容的各种各样的致密星,如4U 1820-30,PSR J1903+327,4U 1608-52,船帆座X-1,PSR J1614-2230,SMC X-4和Cen X-3的观测数据。
英文摘要:
A new class of solutions for Einstein's field equations representing a static spherically symmetric anisotropic distribution of matter is obtained on the background of pseudo-spheroidal spacetime. We have prescribed the bounds of the model parameters $ k $ and $ p_0 $ on the basis of the elementary criteria for physical acceptability, viz., regularity, stability and energy conditions. By taking the values of model parameters from the prescribed bounds, we have shown that our model is compatible with the observational data of a wide variety of compact stars like 4U 1820-30, PSR J1903+327, 4U 1608-52, Vela X-1, PSR J1614-2230, SMC X-4 and Cen X-3.
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