Unveiling the small-scale jets in the rapidly growing supermassive black hole IZw1
Xiaolong Yang, Su Yao, Luigi C. Gallo, Jun Yang, Luis C. Ho, Minfeng, Gu, Willem A. Baan, Jiri Svoboda, Ran Wang, Xiang Liu, Xiaoyu Hong, Xue-Bing, Wu, Wei Zhao

TL;DR
This study used high-resolution VLBI observations to detect and analyze small-scale, episodic jets in the supermassive black hole system IZw1, shedding light on jet behavior in super-Eddington accreting AGNs.
Contribution
First direct detection and characterization of small-scale, episodic jets in the super-Eddington AGN IZw1 using VLBI techniques, revealing jet properties and their analogy to X-ray binary states.
Findings
Detected $ ext{~45 parsec}$ jets at 1.5 and 5 GHz.
Jets show episodic ejections with no flat-spectrum core.
Jet properties support AGN/XRB analogy in extreme accretion states.
Abstract
Accretion of black holes at near-Eddington or super-Eddington rates is the most powerful episode that drives black hole growth, and it may work in several types of objects. However, the physics of accretion and jet-disc coupling in such a state remains unclear, mainly because the associated jets are not easily detectable due to the extremely weak emission or possibly episodic nature of the jets. Only a few near/super-Eddington systems have demonstrated radio activity, and it remains unclear whether there is a jet and what are their properties, in super-Eddington active galactic nuclei (AGNs) (and ultraluminous X-ray sources). The deficit is mainly due to the complex radio mixing between the origins of jets and others, such as star formation activity, photo-ionized gas, accretion disk wind, and coronal activity. In this work, we conducted high-resolution very long baseline interferometry…
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Taxonomy
TopicsAstrophysical Phenomena and Observations · Mechanics and Biomechanics Studies
