  The mechanism of pair creation in electrosphere of compact astrophysical
objects such as quark stars or neutron stars is revisited, paying attention to
evaporation of electrons and acceleration of electrons and positrons,
previously not addressed in the literature. We perform a series of numerical
simulations using the Vlasov-Maxwell equations. The rate of pair creation
strongly depends on electric field strength in the electrosphere. Despite Pauli
blocking is explicitly taken into account, we find no exponential suppression
of the pair creation rate at low temperatures. The luminosity in pairs
increases with temperature and it may reach up to $L_\pm\sim 10^{52}$ erg/s,
much larger than previously assumed.
