  We aim to re-investigate the structure of the neutron rich exotic nucleus
^{19}C through studies of its Coulomb breakup reactions, assuming that its
excitation is to states in the low energy continuum. The method used retains
all finite-range effects associated with the interactions between the breakup
fragments and can use realistic wave functions for this possibly halo nucleus.
We apply the method to compute the longitudinal momentum distribution of
^{18}C, exclusive neutron angular distribution and relative energy spectrum of
^{19}C following Coulomb breakup of ^{19}C on heavy targets at beam energies
below 100 MeV/nucleon. The calculated results are compared with recently
available experimental data. In the majority of the few cases, the data favour
^{18}C(0^+) \otimes 1s_{1/2} as the probable ground state configuration of
^{19}C, with a one-neutron separation energy of 0.53 MeV. However, it appears
that the existing experimental data do not allow to draw a clear conclusion
about the ground state configuration of this nucleus.
