# athenakit.physics

Physics modules for computing derived quantities in Newtonian and general-relativistic regimes.

## GRMHD

Derived variables and helper functions for general-relativistic MHD in stationary (Kerr) spacetimes.

```{eval-rst}
.. automodule:: athenakit.physics.grmhd
   :members:
   :undoc-members:
```

## Metric

Kerr metric utilities (Boyer-Lindquist and Kerr-Schild coordinates).

```{eval-rst}
.. automodule:: athenakit.physics.metric
   :members:
   :undoc-members:
```

## SNR

Analytic solutions for supernova remnant evolution.

```{eval-rst}
.. automodule:: athenakit.physics.snr
   :members:
   :undoc-members:
```