A detailed study of the nuclear region of Mrk 273
Abstract
We present 5 GHz EVN+MERLIN observations of the nuclear region of the ultra luminous infrared galaxy Mrk 273. These observations confirms the detection, on the mas scale, of two resolved component labelled as N and SE in the literature. We use published VLBA observations at 1.4 GHz, at the same resolution, to derive spectral index information of component N and SE and discuss these findings in relation with different hypothesis (compact starburst or AGN) for the origin of the radio emission.
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