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[Peter Diener]

Hi Thejas,

In the Einstein Toolkit, we use, as is common in numerical relativity, 
units where the speed of light, c, and the gravitational constant, G, are 
chosen to be c=G=1. In addition, we measure mass in units of the solar 
mass, M_sun. 1 solar mass can be converted into a length by multiplying by 
G and dividing by c^2. This is then the unit of length. We can convert 
that into a time by dividing by c. So the unit of length and time in SI 
units are then

[L] = 1 M_sun*G/c^2 = 1477 m.
[T] = 1 M_sun*G/c^3 = 4.93 10^-6 s.

As can be seen, the unit of length is 1 half the Scharzschild radius of a 
black hole with a mass of 1 solar mass. The unit if time is then the time 
it takes light to travel that distance.

Cheers,

   Peter

On Thu, 10 Aug 2023, Thejas A Nair wrote:

> Hi,
> I had a doubt about this graph, Why do we have a 'Mass of the sun' parameter
> in the x-axis, What is the logic behind it?
> Warm Regards
> 
>