NGC5252: a pair of radio-emitting active galactic nuclei?

Understand

The X-ray source CXO J133815.6+043255 has counterparts in the UV, optical, and radio bands.

• Based on the multi-band investigations, it has been recently proposed by Kim et al.
• (2015) as a rarely-seen off-nucleus ultraluminous X-ray (ULX) source with a black hole mass of >= 10^4 solar mass in the nearby Seyfert galaxy NGC 5252.
• To explore its radio properties at very high angular resolution, we performed very long-baseline interferometry (VLBI) observations with the European VLBI Network (EVN) at 1.7 GHz.