How to get outer glow to the object I have a node setup and got this effect.



Node setup



Result



Need to have a outer glow to the object like this

Outer Glow



What extra node i have to add to get the above result to glow my object. Any suggestion or help. Thanks
Create a box.
*Create a new shader for the box
*Unplug material from material output. 
*Create a new principled volume shader
*Connect it to VOLUME on material output
*turn density to 0.02
*Play with absorption.

Put the box enclosing the monkey.

Volume shading will capture light by the absorption and density parameter.
Hope this helps.