Answer
It’s the Radial Gradient Tool
Double click on layer or right click and select Blending Options.
Check Gradient Overlay and change mode to Radial
as shown in image.
Drag your cursor above image to change the location of your gradient and change scale slider to define spread area.
For further explanation, refer to the official tips
Hope you get the result of your liking 🙂
Attribution
Source : Link , Question Author : Quinton Frylinck , Answer Author : tvanc