Abstract We have investigated the symmetric twin-jets related to innermost region of some AGNs, try to get their Thomson-thick properties. We propose to use radio method to obtain the column densities for 2 sources OQ208 and NGC 4261, the result for OQ208 is consistent with the estimate from X-ray method on average, and the column density for NGC 4261 is a bit less than that from X-ray. Other 2 sources NGC 1052 and Mrk 231 are also discussed. More compact symmetric sources with two-sided jets could be suitable to be used to study Thomson-thick/thin AGN properties in future.
null
It accepts original submissions from all over the world and is internationally published and distributed by IOP