Trying to get a tier for the "Create a pocket dimension with a sun" kind of feat
Assumption made for this calc:
The radius is 1 AU like Earth-Sun distance.
The planet inside the pocket dimension is Earth.
Formula is E= 4*U*((Er/Br)^2), U is GBE of Earth, Er is the explosion's radius, Br is the Earth's radius, and E is the yield.
Sun at the center and planet at the "edge" of the pocket dimension[]
1 AU= 1,496*10^11 metres
GBE= 2,24*10^32 J
Earth's radius= 6.373.044,737 m
E= 4*2,24*10^32*((1,496*10^11:(6,373044737*10^6))^2)=
8,96*10^32*((9,534074926552*10^5)^2)=
8,96*10^42*(90,898584705107524194608704)=
8,1445131895776341678369398784*10^44 or 8,14 Foe Large Star level