Liu, Xiang

Formation and Collimation of jets in AGN revisit with toy models.

Author list: Xiang Liu

We study the jet formation and collimation in AGN with toy models, for a supermassive black hole as the central engine, with material accreting onto BH, to forming and collimating a large scale jet, there must be either a bi-polar large scale magnetic field (B) or a geometric thicked accretion disk (maybe ADAF/Bondi accretion). Then we could see three kind of initial/inner jets formation and collimation (IJFC): 1) the IJFC is dominated by the collimated B, 2) the IJFC is dominated by bi-polar chunnels from geometric thick disk, or 3) a fair situation between the two. We will try to investigate the inner jets from a sample of AGN, to see whether they are grouped such as with strong B, or with thick disk, or with both.