In the present paper, we have introduced a new model of gravastar with an isotropic matter distribution in Rastall gravity by the Mazur–Mottola (2004) mechanism. Mazur–Mottola approach is about the construction of gravastar which is predicted as an alternative to black hole. By following this convention, we define gravastar in the form of three phases. The first one is an interior phase which has negative density; the second part consists of thin shell comprising ultrarelativistic stiff fluid for which we have discussed the length, energy, and entropy. By the graphical analysis of entropy, we have shown that our proposed thin shell gravastar model is potentially stable. The third phase of gravastar is defined by the exterior Schwarzschild geometry. For the interior of gravastar, we have found the analytical solutions free from any singularity and the event horizon in the framework of Rastall gravity.

中文翻译：

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Rastall重力的各向同性Gravastar模型

在本文中，我们通过Mazur–Mottola（2004）机理引入了一种新的Gravastar模型，该模型具有Rastall重力下的各向同性物质分布。Mazur–Mottola方法是关于Gravastar的构造，预计该构造将替代黑洞。通过遵循这一约定，我们以三个阶段的形式定义了Gravastar。第一个是内相，密度为负。第二部分由包含超相对论硬流体的薄壳组成，我们已经讨论了其长度，能量和熵。通过熵的图形分析，我们已经表明，我们提出的薄壳gravastar模型具有潜在的稳定性。Gravastar的第三阶段由外部Schwarzschild几何形状定义。对于Gravastar的内部，