Waves in the chromsophere and TR 3/5 minute oscillations(2.1)

 

The internetwork chromosphere

The internetwork chromosphere may perharps be considered as a gravitationally stratified isothermal slab. Then we may combine the linearized mass, momentum and energy conservation equations into

Solving this as an initial value problem gives

 wave front propagates at the sound speed cs

 followed by an oscillatory wake...with period wa=cs/2H