Just about anything you can think of
In addition to this, time delay analysis of 3C 454.3, BL Lacertae and 3C 273 in the correlation study yielded separation distances between the emission regions ranging between 0.1 pc to 19 pc in the rest frame of the observer. (214;42)). However, much greater separation distances were observed for 3C 279 and OJ 287 (>…