Rapid oscillations in the solar corona detected with Solar Orbiter

The Sun's corona is very hot. To understand how it is heated, it is important to know what happens for small and fast waves. These scales are at the moment inaccessible with the current instrumentation. In the two years from now, the newly launched Solar Orbiter spacecraft will for the first time observe the solar atmosphere with extremely high resolution and a fantastic temporal cadence in its Extreme Ultraviolet Imager. With this new instrument, we can then probe the waves at the high frequencies and small scales for the first time. After this project, we will have quantified their contribution to the energy budget in the corona, and also used them for seismology of the solar atmosphere. In the latter technique, observations of waves are compared to models in order to infer local coronal parameters, such as the magnetic field.