# Swift J1644+5734: the EVN view

## TL;DR

This paper presents high-resolution EVN radio imaging of TDE J1644+5734, providing constraints on jet velocity and insights into relativistic jet production in tidal disruption events.

## Contribution

It offers the first milliarcsecond-resolution imaging of TDE J1644+5734, constraining jet velocity and advancing understanding of jet formation in TDEs.

## Key findings

- Jet velocity constrained to <0.27c
- Provides astrometric limits on jet speed
- Enhances understanding of relativistic jets in TDEs

## Abstract

A small fraction of Tidal Disruption Events (TDE) produce relativistic jets, evidenced by their non-thermal X-ray spectra and transient radio emission. Here we present milliarcsecond-resolution imaging results on TDE J1644+5734 with the European VLBI Network (EVN). These provide a strong astrometric constraint on the average apparent jet velocity <0.27, that constrains the intrinsic jet velocity for a given viewing angle.