DOI

https://doi.org/10.48717/t77k-y756

Project

EZ036

Title

Giant jetted IMBH

Abstract

Intermediate-mass black holes (IMBHs) are suggested to be seeds of supermassive black holes (SMBHs). Clear jet structures are rarely observed in IMBH candidates. Recently, we discovered J1328-0307, the first IMBH candidate associated with Mpc-scale radio jets. This could challenge our understanding of jet formation and black hole growth. To investigate how such a small black hole produces such powerful jets and to explore the early stages of SMBH evolution, we propose EVN+e-MERLIN observations in the L (18 cm) and C (6 cm) bands. Our immediate objectives are: (1) resolve the pc to kpc-scale structure of the core to determine if it exhibits a core-jet morphology, providing insights into the present activity of the central engine (2) study the connection between the core and Mpc-scale lobes to understand jet triggering mechanisms and duty cycles. These observations will achieve high sensitivity and resolution, enabling the detection of faint diffuse structures and revealing potential jet realignment or episodic jet activity. This study will help us understand the jet formation process and the early growth of SMBHs.