Landing page for project EY037

I ZW 1 is a super-Eddington accreting narrow line Seyfert 1 (NLS1) source. It is also a prototype quasar at a redshift of 0.06. Our recent VLBA L-band observation revealed a complex structure: an east-west elongation of the main emission structure shows a triple morphology, possibly indicating a bipolar ejection (a two-sided jet or wind-like outflows). A weak extension is found to the north of the putative core, in a perpendicular direction to the main structure. We propose an EVN+e-MERLIN C-band observation to clarify the physical nature of these VLBI components. The brightness temperature can be used to identify the core. Combing the L and C band images provides the spectral indices of the VLBI components, yielding additional identification of the core and jets. The morphology and spectral index shed light on the physical nature of the weaker northern extensions: is it associated with wide-angle winds?

This data is part of the archive of VLBI data maintained by JIVE on behalf of the EVN, a network of radio telescopes located primarily in Europe and Asia, with additional antennas in South Africa. The EVN archive itself has the DOI https://doi.org/10.17616/R3Z197