The population of intermediate-mass black holes ( IMBHs ) in nearby dwarf galaxies plays an important ‘ ‘ ground truth ’ ’ role in exploring black hole formation and growth in the early Universe .
In the dwarf elliptical galaxy SDSS J090613.77 + 561015.2 ( z = 0.0465 ) , an accreting IMBH has been revealed by optical and X-ray observations .
Aiming to search for possible radio core and jet associated with the IMBH , we carried out very long baseline interferometry ( VLBI ) observations with the European VLBI Network ( EVN ) at 1.66 GHz .
Our imaging results show that there are two 1-mJy components with a separation of about 52 mas ( projected distance 47 pc ) and the more compact component is located within the 1 \sigma error circle of the optical centroid from available Gaia astrometry .
Based on their positions , elongated structures and relatively high brightness temperatures , as well as the absence of star-forming activity in the host galaxy , we argue that the radio morphology originates from the jet activity powered by the central IMBH .
The existence of the large-scale jet implies that violent jet activity might occur in the early epochs of black hole growth and thus help to regulate the co-evolution of black holes and galaxies .