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Recent sensitive studies have revealed that Seyfert galaxies possess kiloparsec-scale radio structures (KSRs). However, the origin of these KSRs is uncertain. The radio emission could be triggered either by AGN activity or starburst superwinds. The evidence in the literature is mixed. The surest way to check the origin is to observe the radio emission on all spatial scales going from the parsec to the kiloparsec. We propose to observe six Seyfert galaxies that show KSRs in VLA as well as sub-kiloparsec scale radio structures in 5 GHz eMERLIN data, with the EVN+MERLIN at L-band and EVN-only at X-band. The archival VLBA parsec-scale data for these sources show weak or no structures, owing to the lack of sensitivity. These sources belong to the well-studied Extended 12-micron Spitzer sample of Gallimore et al. (2010). With EVN+MERLIN data, the improved sensitivity on parsec and sub-kiloparsec scales will allow us to determine the origin of these KSRs. The two frequency observations will also provide spectral index information crucial for determining emission mechanism at radio frequencies. We request for a total time of 36 hours to observe the 6 targets in phase-referenced mode. |