  The profiles of the chromo-electric field generated by static
quark-antiquark, $Q{\bar Q}$ and three-quark, $QQQ$ sources are calculated in
Coulomb gauge. Using a variational ansatz for the ground state, we show that a
flux tube-like structure emerges and combines to the ``Y''-shape field profile
for three static quarks. The properties of the chromo-electric field are,
however, not expected to be the same as those of the full action density or the
Wilson line and the differences are discussed.
