Gravitational collapse in Rastall gravity context with an anisotropic fluid

In the recent work, we study the gravitational collapse of spherical symmetric core of star inRastall gravity. Gravitational collapse is considered to be very important phenomena of structureformation in our Universe. We develop the mathematical model of gravitational collapse processwhen there is anisotropy of pressure in fluid distribution in Rastall gravity. In current model, weconsider the anisotropic pressure with equation of state (l, ω) : pt = ωρ and pr = lρ, (l + 2ω) < −1,and scrutinise the situations under which the collapse scenario leads to the formation of spacetimesingularity, that may be a naked or covered by an Apparent Horizon (AH). Furthermore, it is alsoinvestigate that the Rastall parameter γ may affect the development of AH which result in a blackhole formation. This work give the generalisation of isotropic pressure into anisotropic pressure inthe Rastall gravity