Landing page for project ES119

We have identified a new radio transient with optical and mid-infrared outbursts that might be associated with the TDE in a normal star-forming galaxy. The source shows unique radio characteristics: (1) long-lasting radio emission (>10 years) with luminosity comparable to the prototype jetted TDE Sw J1644+57, (2) VLBA observations revealing a resolved core-jet structure with apparent superluminal motion (up to 2.5c), and (3) ongoing spectral evolution suggesting multiple jet ejections. These features strongly suggest that a relativistic jet has been launched, making the source a crucial laboratory for understanding jet formation in TDEs and addressing the puzzle of the rarity of jetted TDEs in normal galaxies. We propose EVN C-band observations that will leverage superior resolution and sensitivity to definitively track jet evolution and distinguish between jet-CNM interaction models. Given the observed flux decay of the jet components, immediate EVN observations are essential to capture this unique opportunity before the emission becomes faint and undetectable.

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