Impact of the cosmological constant on the event horizon

Schwarzschild's solution for Einstein's equations in the case of a non-zero cosmological constant is considered.Observations show that the cosmological constant is different from zero.Therefore, the study of such solutions is necessary.It is shown that the dependence of the event horizon on the cosmological constant is discontinuous.The event horizon exists for zero and negative values of the cosmological constant of the central spherically symmetric body.