  The X-ray emission from the knots of the kilo-parsec scale jet of active
galactic nuclei (AGN) suggests the high energy emission process is different
from the radio/optical counterpart. Interpretation based on the Inverse Compton
scattering of cosmic microwave photons has been ruled out through Fermi
gamma-ray observations for low redshift sources. As an alternate explanation,
synchrotron emission from a different electron population is suggested. We
propose a model considering the advected electron distribution from the sites
of particle acceleration in AGN knots. This advected electron distribution is
significantly different from the accelerated electron distribution and
satisfies the requirement of the second electron population. The synchrotron
emission from the accelerated and the advected electron distribution can
successfully reproduce the observed radio to X-ray fluxes of the knots of 3C
273. For the chosen combination of the model parameters, the spectrum due to
inverse Compton scattering of cosmic microwave photons falls within the Fermi
gamma-ray upper limits.
