A Decomposable Branching Process in a Markovian Environment

الملخص EN

A population has two types of individuals, with each occupying an island.

One of those, where individuals of type 1 live, offers a variable environment.

Type 2 individuals dwell on the other island, in a constant environment.

Only one-way migration (1→2) is possible.

We study then asymptotics of the survival probability in critical and subcritical cases.