Pradyumn K. Sahoo

1 Introduction Gravastar is a promising alternative to conventional black holes. Unlike black holes, gravastars do not suffer from singularities, making them a safer and more reliable option. Additionally, the Modified Symmetric Teleparallel Equivalent of Gravity theory has shown remarkable success in studying the universe and celestial bodies, such as black holes and wormholes.

Abstract In this article, the viscous fluid cosmological model is analyzed in the framework of recently proposed f ( Q ) $f(Q)$ gravity by assuming three different forms of bulk viscosity coefficients, specifically, ( i ) ζ = ζ 0 + ζ 1 ( a ̇ a ) + ζ 2 ( a ̈ a ̇ ) $(i)\zeta =\zeta _{0}+\zeta _{1}(\frac{\dot{a}}{a}) +\zeta _{2}(\frac{{\ddot{a}}}{\dot{a}})$ , ( i i ) ζ = ζ 0 + ζ 1 ( a ̇ a ) $(ii)\zeta =\zeta _{0}+\zeta _{1}(\frac{\dot{a}}{a})$ , and ( i i i ) ζ = ζ 0 $(iii)\zeta =\zeta _{0}$ and...