Physicists first recorded a strange inaudible human hearing rumble - so the plasma crashes into the Earth's magnetic field.

For more than 45 years, scientists have been trying to prove the existence of this "drum roll" — sound standing waves.

caused by the resonance of the magnetic field on plasma, high-energy charged particles, and coronal solar mass ejections.

According to the calculations, the interaction of the magnetic fieldand magnetopauses with third-party waves and particles that bombard the Earth lead to the appearance of special standing waves on the surface of the magnetosphere. They resemble the beats of drums. For many years physicists have been trying to hear these sounds, which are formed at frequencies tens of thousands of times lower than people can hear, but the intensity of this process did not allow experimental confirmation of the theory.

A group of scientists led by Martin Archer fromQueen Mary University in London analyzed data from THEMIS magnetospheric probes, lining up in 2017 in an ideal line at the boundary of the magnetosphere.

It turned out that the magnetic shield, which protects the Earth from cosmic rays, sometimes "cracks" and leaksDuring the observation, there was a small ejection of plasma from the Sun, which allowed the probes to record the vibration of the magnetic field, as well as the propagation of these waves throughout its surface and the reflection from the Sun.fixed parts.

Initial and reflected waves begin to interfereeach other, enhancing its action, this leads to the emergence of so-called standing waves, where some points remain fixed, while others vibrate in different directions.