Spherical collapse of a unified dark fluid with constant adiabatic sound speed

In this paper, we test the spherical collapse of a unified dark fluid (UDF) which has constant adiabatic sound speed. By choosing the different values of model parameters Bs and α, we show the non-linear collapse for UDF and baryons which are considered for their formation of the large scale structure of our Universe. The analyzed results show that larger values of α and Bs make the structure formation faster and earlier. (orig.)