  We present a study of charmonia in hot gluonic plasma, for temperatures upto
three times the deconfinement transition temperature Tc. q \bar{q} systems with
quark masses close to the charm mass and different spin-parity quantum numbers
were studied on very fine isotropic lattices. The analysis of temporal
correlators, and spectral functions constructed from them, shows that the J/psi
and eta_c survive up to quite high temperatures, with little observable change
up to 1.5 Tc, and then gradually weakening and disappearing by 3 Tc. For the
scalar and axial vector channels, serious modifications are induced by the hot
medium already close to Tc, possibly dissociating the mesons by 1.1 Tc.
