Abstract
We report follow-up Swift observations on the newly discovered gamma-ray transient Fermi J1717-5156 (Atel #4023). We combined three Swift XRT PC mode datasets resulting in a total exposure time of ~17.2ksec. A bright X-ray source is clearly detected at the gamma-ray transient location with R.A.=17:17:34.47, Decl.=-51:55:31.5 (J2000) and an error radius of 3.5 arcsec (90% confidence). We determined it as the primary X-ray counterpart.