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Low frequency observations at 325 and 610 MHz have been carried out for two"radio-loud" Seyfert galaxies, NGC4235 and NGC4594 (Sombrero galaxy), using theGiant Meterwave Radio Telescope (GMRT). The 610 MHz total intensity and 325-610MHz spectral index images of NGC4235 tentatively suggest the presence of a"relic" radio lobe, most likely from a previous episode of AGN activity. Thismakes NGC4235 only the second known Seyfert galaxy after Mrk6 to showsignatures of episodic activity. Spitzer and Herschel infrared spectral energydistribution (SED) modelling using the clumpyDREAM code predicts star formationrates (SFR) that are an order of magnitude lower than those required to powerthe radio lobes in these Seyferts (~0.13-0.23 M_sun/yr compared to the requiredSFR of ~2.0-2.7 M_sun/yr in NGC4594 and NGC4235, respectively). This findingalong with the detection of parsec and sub-kpc radio jets in both Seyfertgalaxies, that are roughly along the same position angles as the radio lobes,strongly support the suggestion that Seyfert lobes are AGN-powered. SEDmodelling supports the "true" type 2 classification of NGC4594: this galaxylacks significant dust obscuration as well as a prominent broad-line region.Between the two Seyfert galaxies, there is an inverse relation between theirradio-loudness and Eddington ratio and a direct relation between theirEddington-scaled jet power and bolometric power.

A GMRT Study of Seyfert Galaxies NGC4235 & NGC4594: Evidence of Episodic Activity ?