I mean are there any chakras or other things that are considered the core of the aura ?
I want to work on my aura but I’m really uncomfortable by visualizing something being radiated from me and is all around me so I thought maybe it’s best to find its core and change that…
Any suggestions ?
Most systems from what i have seen say something along the lines of either the soul on the nonphysical level or the electromagnetic field of the heart which is said energetically to be the house of the soul.
You mean the physical heart or the heart chakra ?
The three dantian
If we consider that the core of the aura then that also brings up another question…
What’s the core of the soul ?
No idea 
that is assuming the soul has a core and i have no clue if it does or doesn’t. Any speculations on the matter would simply be that. Intellectual speculation.